{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"banking-markets","screenKey":"us-county-bank-branch-deposits","screenLabel":"County FDIC-insured branch deposits","year":2025,"metricLabel":"County deposit HHI","metricUnit":"HHI (0-10,000)","summary":{"branchCount":73568,"countyCount":3104,"highHhiCount":1792,"medianHhi":2826,"singleOrganizationCount":187,"stateCount":51,"totalDepositsThousands":18009447842},"source":{"accessDate":"2026-07-19","apiUrl":"https://api.fdic.gov/banks/sod?filters=YEAR%3A2025&fields=YEAR%2CCERT%2CNAMEFULL%2CSTALPBR%2CSTNAMEBR%2CSTCNTYBR%2CCNTYNAMB%2CDEPSUMBR%2CRSSDHCR%2CNAMEHCR","confidenceLevel":"high","dataStatus":"estimated_public","id":"fdic-sod-2025","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each state, groups branches to the FDIC-reported top bank holding company when RSSDHCR is available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","publisher":"Federal Deposit Insurance Corporation","title":"2025 Summary of Deposits","url":"https://banks.data.fdic.gov/bankfind-suite/SOD","profileHref":"/sources/fdic-sod-2025"},"guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions.","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","matchedCount":14,"count":14,"filters":{"states":["MA"],"statesMatched":true,"matchedStateCodes":["MA"],"county":null,"countyMatched":null,"fips":null,"fipsMatched":null,"fipses":[],"fipsesMatched":null,"matchedFipses":[],"unmatchedFipses":[],"selectionOrder":false,"history":null,"historyMatched":true,"from":null,"fromMatched":true,"to":null,"toMatched":true,"rangeMatched":true,"query":null,"concentrationClass":null,"concentrationClassMatched":true,"source":null,"sourceMatched":null,"year":null,"yearMatched":null,"sort":"hhi","sortMatched":true,"order":"desc","orderMatched":true,"limit":null,"limitMatched":true},"availableSorts":["hhi","leader_share","organizations","branches","deposits","county"],"availableConcentrationClasses":["unconcentrated","moderately_concentrated","highly_concentrated"],"rows":[{"branchCount":13,"concentrationClass":"highly_concentrated","countyFips":"25007","countyName":"Dukes","depositRank":903,"hhi":4930,"hhiPercentile":78.9,"hhiRank":655,"leadingOrganization":"VINEYARD BANCORP MHC","leadingOrganizationSharePct":67.2,"leaderShareRank":469,"organizationCount":4,"organizationDepthRank":1929,"organizationsOver5pct":4,"profileHref":"/geographies/banking/25007","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":1,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":1377178,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":203,"concentrationClass":"highly_concentrated","countyFips":"25025","countyName":"Suffolk","depositRank":9,"hhi":3996,"hhiPercentile":71.1,"hhiRank":899,"leadingOrganization":"STATE STREET CORPORATION","leadingOrganizationSharePct":59.3,"leaderShareRank":692,"organizationCount":32,"organizationDepthRank":70,"organizationsOver5pct":4,"profileHref":"/geographies/banking/25025","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":2,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":350756602,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":15,"concentrationClass":"highly_concentrated","countyFips":"25011","countyName":"Franklin","depositRank":775,"hhi":3796,"hhiPercentile":68.5,"hhiRank":980,"leadingOrganization":"GSB, MHC","leadingOrganizationSharePct":52.1,"leaderShareRank":962,"organizationCount":4,"organizationDepthRank":1929,"organizationsOver5pct":4,"profileHref":"/geographies/banking/25011","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":3,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":1687258,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":8,"concentrationClass":"highly_concentrated","countyFips":"25019","countyName":"Nantucket","depositRank":970,"hhi":2827,"hhiPercentile":50.1,"hhiRank":1551,"leadingOrganization":"MUTUAL BANCORP","leadingOrganizationSharePct":35.8,"leaderShareRank":1873,"organizationCount":4,"organizationDepthRank":1929,"organizationsOver5pct":4,"profileHref":"/geographies/banking/25019","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":4,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":1236616,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":49,"concentrationClass":"moderately_concentrated","countyFips":"25003","countyName":"Berkshire","depositRank":361,"hhi":2020,"hhiPercentile":28.9,"hhiRank":2207,"leadingOrganization":"BERKSHIRE HILLS BANCORP, INC","leadingOrganizationSharePct":35.7,"leaderShareRank":1884,"organizationCount":9,"organizationDepthRank":797,"organizationsOver5pct":7,"profileHref":"/geographies/banking/25003","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":5,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":4639205,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":84,"concentrationClass":"moderately_concentrated","countyFips":"25001","countyName":"Barnstable","depositRank":185,"hhi":1687,"hhiPercentile":19.4,"hhiRank":2504,"leadingOrganization":"MUTUAL BANCORP","leadingOrganizationSharePct":32.1,"leaderShareRank":2139,"organizationCount":11,"organizationDepthRank":580,"organizationsOver5pct":6,"profileHref":"/geographies/banking/25001","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":6,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":11620178,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":47,"concentrationClass":"moderately_concentrated","countyFips":"25015","countyName":"Hampshire","depositRank":285,"hhi":1561,"hhiPercentile":16,"hhiRank":2609,"leadingOrganization":"FLORENCE BANCORP, MHC","leadingOrganizationSharePct":24.8,"leaderShareRank":2629,"organizationCount":15,"organizationDepthRank":364,"organizationsOver5pct":5,"profileHref":"/geographies/banking/25015","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":7,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":6358785,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":129,"concentrationClass":"unconcentrated","countyFips":"25023","countyName":"Plymouth","depositRank":120,"hhi":1289,"hhiPercentile":8.3,"hhiRank":2846,"leadingOrganization":"INDEPENDENT BANK CORP.","leadingOrganizationSharePct":26.9,"leaderShareRank":2489,"organizationCount":18,"organizationDepthRank":244,"organizationsOver5pct":7,"profileHref":"/geographies/banking/25023","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":8,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":19171198,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":116,"concentrationClass":"unconcentrated","countyFips":"25013","countyName":"Hampden","depositRank":162,"hhi":1095,"hhiPercentile":3.8,"hhiRank":2986,"leadingOrganization":"PEOPLESBANCORP, MHC","leadingOrganizationSharePct":17.1,"leaderShareRank":3037,"organizationCount":18,"organizationDepthRank":244,"organizationsOver5pct":7,"profileHref":"/geographies/banking/25013","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":9,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":14123026,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":219,"concentrationClass":"unconcentrated","countyFips":"25021","countyName":"Norfolk","depositRank":78,"hhi":958,"hhiPercentile":1.7,"hhiRank":3052,"leadingOrganization":"BANK OF AMERICA CORPORATION","leadingOrganizationSharePct":21.1,"leaderShareRank":2874,"organizationCount":37,"organizationDepthRank":45,"organizationsOver5pct":6,"profileHref":"/geographies/banking/25021","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":10,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":36312726,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":124,"concentrationClass":"unconcentrated","countyFips":"25005","countyName":"Bristol","depositRank":139,"hhi":951,"hhiPercentile":1.6,"hhiRank":3054,"leadingOrganization":"BANK OF AMERICA CORPORATION","leadingOrganizationSharePct":14,"leaderShareRank":3091,"organizationCount":16,"organizationDepthRank":316,"organizationsOver5pct":9,"profileHref":"/geographies/banking/25005","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":11,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":16393737,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":218,"concentrationClass":"unconcentrated","countyFips":"25009","countyName":"Essex","depositRank":84,"hhi":828,"hhiPercentile":0.8,"hhiRank":3081,"leadingOrganization":"SALEM FIVE BANCORP","leadingOrganizationSharePct":14.3,"leaderShareRank":3087,"organizationCount":32,"organizationDepthRank":70,"organizationsOver5pct":6,"profileHref":"/geographies/banking/25009","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":12,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":31625303,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":444,"concentrationClass":"unconcentrated","countyFips":"25017","countyName":"Middlesex","depositRank":34,"hhi":761,"hhiPercentile":0.5,"hhiRank":3091,"leadingOrganization":"BANK OF AMERICA CORPORATION","leadingOrganizationSharePct":20,"leaderShareRank":2921,"organizationCount":46,"organizationDepthRank":21,"organizationsOver5pct":5,"profileHref":"/geographies/banking/25017","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":13,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":83761398,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."},{"branchCount":189,"concentrationClass":"unconcentrated","countyFips":"25027","countyName":"Worcester","depositRank":104,"hhi":666,"hhiPercentile":0.1,"hhiRank":3102,"leadingOrganization":"BANK OF AMERICA CORPORATION","leadingOrganizationSharePct":12.9,"leaderShareRank":3099,"organizationCount":28,"organizationDepthRank":98,"organizationsOver5pct":7,"profileHref":"/geographies/banking/25027","stateCode":"MA","stateCountyCount":14,"stateHref":"/geographies/massachusetts","stateHhiRank":14,"stateMedianHhi":1425,"stateName":"Massachusetts","totalDepositsThousands":23698067,"year":2025,"sourceId":"fdic-sod-2025","sourceTitle":"2025 Summary of Deposits","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-19","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar sums positive June 30, 2025 branch deposits within each FDIC-reported county or county equivalent, groups branches to the FDIC-reported top bank holding company when available and otherwise to the insured institution certificate, then calculates shares and HHI from those grouped balances.","methodologyHref":"/methodology#county-banking-screen","guardrail":"County rows are screens of positive FDIC Summary of Deposits branch balances grouped to the reported top bank holding company when available and otherwise to the insured institution. Branch-reported deposits may not represent where every customer lives or competes, county boundaries may not match a banking market, deposits are not every banking product, and these screens are not legal market definitions."}]}