{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"banking-markets","screenKey":"us-county-bank-branch-deposits","screenLabel":"County FDIC-insured branch deposits","history":true,"temporalCoverage":{"firstYear":2015,"latestYear":2025,"yearCount":11},"years":[2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025],"metricLabel":"County deposit HHI","metricUnit":"HHI (0-10,000)","summary":{"firstYear":2015,"latestYear":2025,"latestYearCountyCount":3104,"observationCount":34193,"observationsByYear":[{"countyCount":3112,"year":2015},{"countyCount":3108,"year":2016},{"countyCount":3108,"year":2017},{"countyCount":3109,"year":2018},{"countyCount":3111,"year":2019},{"countyCount":3110,"year":2020},{"countyCount":3109,"year":2021},{"countyCount":3109,"year":2022},{"countyCount":3108,"year":2023},{"countyCount":3105,"year":2024},{"countyCount":3104,"year":2025}],"yearCount":11},"source":{"accessDate":"2026-07-20","apiUrl":"https://api.fdic.gov/banks/sod?filters=YEAR%3A%5B2015%20TO%202025%5D&fields=YEAR%2CCERT%2CNAMEFULL%2CSTALPBR%2CSTNAMEBR%2CSTCNTYBR%2CCNTYNAMB%2CDEPSUMBR%2CRSSDHCR%2CNAMEHCR","confidenceLevel":"high","dataStatus":"estimated_public","id":"fdic-sod-2025","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. 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No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":19,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1266,"hhi":3245,"hhiPercentile":63.4,"hhiRank":1138,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":51.5,"leaderShareRank":855,"organizationCount":5,"organizationDepthRank":1709,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":6,"stateMedianHhi":2667,"stateName":"Maine","totalDepositsThousands":582515,"year":2016,"annualCountyCount":3108,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":19,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1172,"hhi":3723,"hhiPercentile":71.1,"hhiRank":900,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":57.1,"leaderShareRank":641,"organizationCount":5,"organizationDepthRank":1693,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":6,"stateMedianHhi":2828,"stateName":"Maine","totalDepositsThousands":666429,"year":2017,"annualCountyCount":3108,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":18,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1243,"hhi":3381,"hhiPercentile":65,"hhiRank":1090,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":53.1,"leaderShareRank":821,"organizationCount":5,"organizationDepthRank":1679,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":8,"stateMedianHhi":2901,"stateName":"Maine","totalDepositsThousands":622359,"year":2018,"annualCountyCount":3109,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. 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No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. 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No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":18,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1219,"hhi":3734,"hhiPercentile":69,"hhiRank":966,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":57.2,"leaderShareRank":703,"organizationCount":5,"organizationDepthRank":1631,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":4,"stateMedianHhi":2635,"stateName":"Maine","totalDepositsThousands":831774,"year":2021,"annualCountyCount":3109,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. 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No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":18,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1129,"hhi":4104,"hhiPercentile":73,"hhiRank":841,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":61,"leaderShareRank":621,"organizationCount":5,"organizationDepthRank":1605,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":4,"stateMedianHhi":2901,"stateName":"Maine","totalDepositsThousands":960239,"year":2023,"annualCountyCount":3108,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":18,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1182,"hhi":3790,"hhiPercentile":68.2,"hhiRank":989,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":57.8,"leaderShareRank":727,"organizationCount":5,"organizationDepthRank":1606,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":4,"stateMedianHhi":3095,"stateName":"Maine","totalDepositsThousands":928468,"year":2024,"annualCountyCount":3105,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."},{"branchCount":18,"concentrationClass":"highly_concentrated","countyFips":"23029","countyName":"Washington","depositRank":1047,"hhi":4376,"hhiPercentile":75.1,"hhiRank":773,"leadingOrganization":"MACHIAS BANCORP, MHC","leadingOrganizationSharePct":63.6,"leaderShareRank":568,"organizationCount":5,"organizationDepthRank":1597,"organizationsOver5pct":5,"profileHref":"/geographies/banking/23029","stateCode":"ME","stateCountyCount":16,"stateHref":"/geographies/maine","stateHhiRank":4,"stateMedianHhi":3312,"stateName":"Maine","totalDepositsThousands":1116924,"year":2025,"annualCountyCount":3104,"sourceId":"fdic-sod-2025","sourceTitle":"Annual Summary of Deposits, 2015-2025","sourcePublisher":"Federal Deposit Insurance Corporation","sourceUrl":"https://banks.data.fdic.gov/bankfind-suite/SOD","sourceProfileHref":"/sources/fdic-sod-2025","accessDate":"2026-07-20","dataStatus":"estimated_public","confidenceLevel":"high","methodologyNote":"Antitrust Radar independently aggregates each annual June 30 Summary of Deposits vintage from 2015 through 2025 using the FDIC-reported top bank holding company when available and otherwise the insured institution certificate. No values are interpolated across missing or changed geographies.","methodologyHref":"/methodology#county-banking-screen","guardrail":"Annual county rows are independent June 30 branch-deposit screens, not interpolated observations or legal market definitions. Reported ownership structures, branch booking, county names, and FIPS boundaries can change between vintages; deposit values are nominal and should not be read as inflation-adjusted growth."}]}