{"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","matchedCount":11,"count":11,"filters":{"states":[],"statesMatched":true,"matchedStateCodes":[],"county":null,"countyMatched":null,"fips":"30003","fipsMatched":true,"fipses":[],"fipsesMatched":null,"matchedFipses":[],"unmatchedFipses":[],"selectionOrder":false,"history":"true","historyMatched":true,"from":2015,"fromMatched":true,"to":2025,"toMatched":true,"rangeMatched":true,"query":null,"concentrationClass":null,"concentrationClassMatched":true,"source":null,"sourceMatched":null,"year":null,"yearMatched":null,"sort":"year","sortMatched":true,"order":"asc","orderMatched":true,"limit":null,"limitMatched":true},"availableSorts":["year","hhi","leader_share","organizations","branches","deposits","county"],"availableConcentrationClasses":["unconcentrated","moderately_concentrated","highly_concentrated"],"rows":[{"branchCount":3,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2607,"hhi":5320,"hhiPercentile":87.8,"hhiRank":380,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":62.6,"leaderShareRank":472,"organizationCount":2,"organizationDepthRank":2688,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":55,"stateHref":"/geographies/montana","stateHhiRank":22,"stateMedianHhi":4786,"stateName":"Montana","totalDepositsThousands":128860,"year":2015,"annualCountyCount":3112,"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. 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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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2612,"hhi":5271,"hhiPercentile":87.2,"hhiRank":400,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":61.6,"leaderShareRank":495,"organizationCount":2,"organizationDepthRank":2680,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":21,"stateMedianHhi":4716,"stateName":"Montana","totalDepositsThousands":127614,"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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2630,"hhi":5145,"hhiPercentile":85.6,"hhiRank":450,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":58.5,"leaderShareRank":590,"organizationCount":2,"organizationDepthRank":2671,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":23,"stateMedianHhi":4855,"stateName":"Montana","totalDepositsThousands":125651,"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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2667,"hhi":5128,"hhiPercentile":85,"hhiRank":467,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":58,"leaderShareRank":611,"organizationCount":2,"organizationDepthRank":2667,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":23,"stateMedianHhi":4759,"stateName":"Montana","totalDepositsThousands":121501,"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. 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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2665,"hhi":5059,"hhiPercentile":83.5,"hhiRank":513,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":55.4,"leaderShareRank":746,"organizationCount":2,"organizationDepthRank":2659,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":24,"stateMedianHhi":4961,"stateName":"Montana","totalDepositsThousands":122619,"year":2019,"annualCountyCount":3111,"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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2664,"hhi":5074,"hhiPercentile":83.3,"hhiRank":521,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":56.1,"leaderShareRank":730,"organizationCount":2,"organizationDepthRank":2648,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":26,"stateMedianHhi":5020,"stateName":"Montana","totalDepositsThousands":138082,"year":2020,"annualCountyCount":3110,"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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2565,"hhi":5074,"hhiPercentile":82.9,"hhiRank":532,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":56.1,"leaderShareRank":745,"organizationCount":2,"organizationDepthRank":2632,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":30,"stateMedianHhi":5143,"stateName":"Montana","totalDepositsThousands":176838,"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. 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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2643,"hhi":5071,"hhiPercentile":81.9,"hhiRank":563,"leadingOrganization":"FIRST INTERSTATE BANCSYSTEM, INC.","leadingOrganizationSharePct":55.9,"leaderShareRank":777,"organizationCount":2,"organizationDepthRank":2612,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":32,"stateMedianHhi":5171,"stateName":"Montana","totalDepositsThousands":164126,"year":2022,"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. 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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2539,"hhi":5010,"hhiPercentile":80.3,"hhiRank":613,"leadingOrganization":"BITTERROOT HOLDING COMPANY","leadingOrganizationSharePct":52.2,"leaderShareRank":977,"organizationCount":2,"organizationDepthRank":2602,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":30,"stateMedianHhi":5150,"stateName":"Montana","totalDepositsThousands":191623,"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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2375,"hhi":5242,"hhiPercentile":83.8,"hhiRank":503,"leadingOrganization":"BITTERROOT HOLDING COMPANY","leadingOrganizationSharePct":61,"leaderShareRank":629,"organizationCount":2,"organizationDepthRank":2590,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":26,"stateMedianHhi":5171,"stateName":"Montana","totalDepositsThousands":248478,"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":2,"concentrationClass":"highly_concentrated","countyFips":"30003","countyName":"Big Horn","depositRank":2268,"hhi":5645,"hhiPercentile":86.9,"hhiRank":407,"leadingOrganization":"BITTERROOT HOLDING COMPANY","leadingOrganizationSharePct":68,"leaderShareRank":453,"organizationCount":2,"organizationDepthRank":2581,"organizationsOver5pct":2,"profileHref":"/geographies/banking/30003","stateCode":"MT","stateCountyCount":54,"stateHref":"/geographies/montana","stateHhiRank":25,"stateMedianHhi":5261,"stateName":"Montana","totalDepositsThousands":293232,"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."}]}