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County or equivalent screenFIPS 36009New York

Cattaraugus, New York

In Cattaraugus, New York, Community Financial System, Inc. holds 54.4% of bank deposits, and local deposit concentration (HHI 3,627) ranks 1,059 of 3,104 U.S. counties and county equivalents in 2025. Concentration rose 671 points between 2015 and 2025. 8 banking organizations report deposits here; the source is the FDIC Summary of Deposits. What is HHI?

This profile is a branch-booking screen. Its county boundary and deposit denominator are not asserted legal banking markets.

Deposit HHI
3,627National rank #1059
Leading share
54.4%Rank #862
Organizations
84 above 5%
Reported deposits
$1.6B21 branches

Measurement contract

What this row measures

June 30, 2025
Geography
Cattaraugus, NYFDIC-reported county or equivalent
Denominator
$1.6BPositive reported branch deposits
Organization rule
8 groupsTop holder when available; otherwise certificate
Measure
3,627 HHIHighly concentrated

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.

Spatial context

Locate this screen in the New York field

Every colored county uses the same 2025 branch-deposit denominator and fixed HHI thresholds. Select another published screen to continue through its evidence profile.

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State county field / NY

New York deposit HHI

State screens
62
State HHI rank
#17
Loading Census boundary layer
0–1,4991,500–2,5002,501–4,9995,000–7,4997,500–10,000Outside NYNo positive-deposit screen

Longitudinal evidence

Trace the annual branch-deposit screen

Compare exact June 30 observations from 2015 through 2025. Annual ranks are rebuilt within each vintage, and unavailable FIPS years remain visibly absent.

Observed span2015-2025June 30 snapshots
Coverage11 / 11Complete annual FIPS series
HHI change+6712,956 to 3,627
Latest annual rank#1059of 3,104 screens
Metric

Deposit HHI

11 exact observationsCattaraugus, NY
First observed2015 / 2,956
Selected vintage2025 / 3,627

The upper field preserves the published metric level. The lower field isolates movement from 2015; annual gaps remain unconnected and unfilled.

Annual evidence ledgerEvery published annual input
Ranks reset within each annual county universe
YearHHINational rankLeader shareOrganizationsBranchesDepositsLeading organization
20152,956#1311 / 3,11243.9%928$916.5MCommunity Bank System, Inc.
20162,885#1374 / 3,10842.8%928$946.5MCommunity Bank System, Inc.
20173,003#1313 / 3,10843.3%927$959.8MCommunity Bank System, Inc.
20182,996#1335 / 3,10944.2%927$977.9MCommunity Bank System, Inc.
20193,259#1180 / 3,11148.4%926$1.2BCommunity Bank System, Inc.
20203,554#1027 / 3,11053.1%925$1.4BCommunity Bank System, Inc.
20213,361#1167 / 3,10951.0%924$1.5BCommunity Bank System, Inc.
20223,512#1102 / 3,10951.9%822$1.5BCommunity Bank System, Inc.
20233,557#1095 / 3,10852.9%821$1.5BCommunity Bank System, Inc.
20243,448#1155 / 3,10551.7%821$1.5BCommunity Financial System, Inc.
20253,627#1059 / 3,10454.4%821$1.6BCommunity Financial System, Inc.

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.

National benchmark

Position in the complete screen universe

Deposit HHI3,6272,826+801 from national county median
National HHI rank#10593,10465.9% of screens are at or below this HHI
Leading share rank#86254.4%Ranked against the same county-screen universe
Deposit scale rank#814$1.6BReported branch-booked deposit scale, not resident wealth

Within-state context

New York county screens

This screen ranks #17 of 62; its HHI is +1,020 from the state screen median of 2,607.

Nearest national peers

Closest published HHI screens

Public evidence packet

Reproduce FIPS 36009

The profile, relationship graph, explorer, annual history, JSON endpoints, and CSV exports resolve to the same FDIC source family with vintage-specific ranking universes.

Publisher
Federal Deposit Insurance Corporation
Accessed
2026-07-20
Coverage
11 exact annual rows / high confidence

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.

Methodology
Cattaraugus, NY | Bank Deposit Concentration | Antitrust Radar