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Custer County, OK Bank Deposit Market Share

Oklahoma Bank and Trust Company holds the largest share of deposits in Custer County, OK, 15.0%, followed by The Bank of the West (10.9%) and MidFirst Bank (10.5%). 15 institutions hold $1.16B at 20 offices as of June 30, 2026, up 6.1% from 2025.

Institutions: 15 Offices: 20 Deposits: $1.16B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: BancFirst (0.58 points); Great Plains National Bank (0.48 points); First Bank of Thomas (0.47 points).

Lost: Blue SKY Bank (-1.34 points); Bank 360 (-0.51 points); MidFirst Bank (-0.27 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 Oklahoma Bank and Trust Company 4 $173.9M 14.99% -0.19 pts 4.8%
2 The Bank of the West 2 $126.2M 10.87% +0.20 pts 8.1%
3 MidFirst Bank 1 $121.6M 10.48% -0.27 pts 3.4%
4 BancFirst 1 $114.5M 9.86% +0.58 pts 12.7%
5 Blue SKY Bank 1 $105.2M 9.07% -1.34 pts -7.5%
6 Interbank 1 $78.2M 6.74% +0.34 pts 11.7%
7 Southwest Bank of Weatherford 1 $75.0M 6.46% +0.33 pts 11.9%
8 Bank of Western Oklahoma 1 $66.1M 5.70% -0.18 pts 2.8%
9 Bank of Hydro 2 $59.6M 5.14% -0.08 pts 4.4%
10 First Bank of Thomas 1 $55.7M 4.80% +0.47 pts 17.7%
11 Legacy Bank 1 $55.0M 4.74% +0.39 pts 15.6%
12 Great Plains National Bank 1 $49.0M 4.22% +0.48 pts 19.6%
13 First Bank and Trust Company 1 $47.1M 4.06% -0.20 pts 1.0%
14 Bank 360 1 $26.6M 2.29% -0.51 pts -13.4%
15 First Summit Bank 1 $6.9M 0.59% -0.03 pts 1.7%

About this list

Deposits are those held at each institution's offices in Custer 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 Weatherford, OK metro area Oklahoma bank directory

Other counties in Oklahoma

Oklahoma CountyTulsa CountyCleveland CountyGarfield CountyBryan CountyCanadian CountyPayne CountyComanche CountyPontotoc CountyPottawatomie CountyCarter CountyMuskogee CountyGrady CountyStephens CountyKay CountyCreek CountyRogers CountyLogan 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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