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Carter County, OK Bank Deposit Market Share

American Nation Bank holds the largest share of deposits in Carter County, OK, 23.4%, followed by First National Bank and Trust Company of Ardmore (21.7%) and BancFirst (21.0%). 8 institutions hold $1.62B at 23 offices as of June 30, 2026, down 3.2% from 2025.

Institutions: 8 Offices: 23 Deposits: $1.62B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: First National Bank and Trust Company of Ardmore (2.15 points); Citizens Bank & Trust Company of Ardmore (0.38 points); American Nation Bank (0.33 points).

Lost: BancFirst (-2.25 points); First Bank & Trust Company (-0.50 points); Simmons Bank (-0.13 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 American Nation Bank 5 $379.1M 23.40% +0.33 pts -1.8%
2 First National Bank and Trust Company of Ardmore 5 $351.5M 21.69% +2.15 pts 7.4%
3 BancFirst 3 $340.9M 21.04% -2.25 pts -12.6%
4 Citizens Bank & Trust Company of Ardmore 4 $268.9M 16.60% +0.38 pts -0.9%
5 First Bank & Trust Company 3 $215.4M 13.30% -0.50 pts -6.8%
6 Simmons Bank 1 $33.0M 2.04% -0.13 pts -9.0%
7 BMO Bank N.A. 1 $19.3M 1.19% -0.06 pts -7.8%
8 International Bank of Commerce 1 $12.0M 0.74% +0.07 pts 7.2%

About this list

Deposits are those held at each institution's offices in Carter County as of June 30, 2026, from the FDIC Summary of Deposits, whatever state the institution is headquartered in. Market share is the institution's deposits divided by all deposits in the market. Shares are by bank charter, not rolled up to the holding company, and cover FDIC-insured institutions only, so credit unions are not included. Each office is placed in its county and metro area by the FDIC branch directory; the few offices the directory does not list are left out of the market and of every share.

Share change compares the institution's share in 2025 and 2026 in percentage points. Deposit change compares its deposits here in the two years and includes deposits that moved through mergers and branch sales; "New" means it had no offices here a year earlier. Offices that closed during the year are placed by their ZIP code or city.

Wider markets

Oklahoma deposits by institution Ardmore, OK metro area Oklahoma bank directory

Other counties in Oklahoma

Oklahoma CountyTulsa CountyCleveland CountyGarfield CountyBryan CountyCanadian CountyPayne CountyComanche CountyPontotoc CountyPottawatomie CountyMuskogee CountyGrady CountyStephens CountyKay CountyCreek CountyRogers CountyLogan CountyCuster CountyPittsburg CountyGarvin CountyBeckham CountyWashington CountyKingfisher CountyCherokee CountyWoodward CountyMayes CountyMcclain CountyMccurtain CountyDelaware CountyLe Flore CountySequoyah CountyLincoln CountyCaddo CountyTexas CountyOttawa CountyWoods CountyJackson CountyOsage CountyWagoner CountyOkmulgee County

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