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Security State Bank of Aitkin Locations & Branches Aitkin, Minnesota
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Security State Bank of Aitkin operates 4 branches from its headquarters in Aitkin, MN, .
Security State Bank of Aitkin branch network
All 4 branches are in MINNESOTA, across 3 cities. Aitkin, MN has the most of its branches, 2. Its largest office by deposits is its main office in Aitkin, MN, with $74.2M (69.5% of its branch deposits). It had the same number of branches on June 30, 2025.
Security State Bank of Aitkin at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 10.79% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $114.5M
- Tier 1 leverage ratio, Q2 2026
- 10.79%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1947
Full financial profile · Is Security State Bank of Aitkin safe? · Security State Bank of Aitkin call report · 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: Aitkin, MN (2 branches) | 2 of 3 | 40.3% | $75.3M |
| State: MN (4 branches) | 189 of 277 | <0.1% | $106.7M |
Ranked by total assets among banks headquartered in the state: Largest banks in Minnesota.
Share by county and metro area
Security State Bank of Aitkin'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 |
|---|---|---|---|---|
| Aitkin, MN (2 branches) | 2 of 5 | 29.3% | $75.3M | $256.8M |
| Cook, MN (1 branch) | 2 of 2 | 16.2% | $22.0M | $135.5M |
| Crow Wing, MN (1 branch) | 14 of 15 | 0.5% | $9.4M | $2.07B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Brainerd, MN (1 branch) | 16 of 17 | 0.3% | $9.4M | $2.73B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Security State Bank of Aitkin (main office) | Aitkin, MN | 56431 | $74.2M |
| Grand Marais Branch | Grand Marais, MN | 55604 | $22.0M |
| Garrison Branch | Garrison, MN | 56450 | $9.4M |
| Paulbecks County Market Branch | Aitkin, MN | 56431 | $1.2M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 16656) · FFIEC NIC profile (RSSD 267652)