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Ameristate Bank Locations & Branches Atoka, Oklahoma
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Ameristate Bank operates 7 branches from its headquarters in Atoka, OK, .
Ameristate Bank branch network
Its 7 branches span 2 states and 6 cities. The most are in OKLAHOMA (5) and TEXAS (2). OKLAHOMA holds 88.0% of its branch deposits. Atoka, OK has the most of its branches, 2. Its largest office by deposits is its main office in Atoka, OK, with $202.0M (47.4% of its branch deposits). It had the same number of branches on June 30, 2025.
Ameristate Bank at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 9.55% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $477.7M
- Tier 1 leverage ratio, Q2 2026
- 9.55%
- Deposit insurance
- FDIC
- Regulator
- Federal Reserve
- Established
- 1906
Full financial profile · Is Ameristate Bank safe? · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Atoka, OK (2 branches) | 1 of 2 | 70.9% | $237.8M |
| State: OK (5 branches) | 65 of 192 | 0.3% | $375.2M |
Ranked by total assets among banks headquartered in the state: Largest banks in Oklahoma.
Share by county and metro area
Ameristate Bank's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Atoka, OK (2 branches) | 1 of 2 | 70.9% | $237.8M | $335.3M |
| Grayson, TX (2 branches) | 12 of 17 | 1.3% | $51.2M | $4.10B |
| Choctaw, OK (1 branch) | 4 of 5 | 12.3% | $50.9M | $412.7M |
| Pushmataha, OK (1 branch) | 3 of 4 | 15.8% | $43.8M | $278.0M |
| Johnston, OK (1 branch) | 2 of 4 | 23.7% | $42.6M | $179.4M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Sherman-Denison, TX (2 branches) | 12 of 17 | 1.3% | $51.2M | $4.10B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Ameristate Bank (main office) | Atoka, OK | 74525 | $202.0M |
| Hugo Branch | Hugo, OK | 74743 | $50.9M |
| Antlers Branch | Antlers, OK | 74523 | $43.8M |
| Sherman Branch | Sherman, TX | 75090 | $43.7M |
| Tishomingo Branch | Tishomingo, OK | 73460 | $42.6M |
| Atoka Branch | Atoka, OK | 74525 | $35.8M |
| Pottsboro Branch | Pottsboro, TX | 75076 | $7.5M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 15510) · FFIEC NIC profile (RSSD 508355)