O'Brien County bank branches Iowa · 13 branches · 9 institutions · $994.2M deposits

Every FDIC-insured bank branch in O'Brien County, Iowa as of June 30, 2025. County land area: 573 square miles, 2.3 branches per 100 sq mi.

Branches
13
Institutions
9
Total Deposits
$994.2M
Avg Deposits / Branch
$76.5M

All institutions in O'Brien County

InstitutionBranchesDeposits
Iowa State Bank 3 $151.4M
Savings Bank 2 $159.7M
Security State Bank 2 $243.0M
Sanborn Savings Bank 1 $65.1M
United Community Bank 1 $31.4M
Peoples Bank 1 $117.9M
Citizens State Bank 1 $139.8M
The First National Bank of Primghar 1 $29.1M
The Security National Bank of Sioux City, Iowa 1 $56.8M
Reading this. Each branch is counted in the county where it physically sits. Deposits are what each branch reports to the FDIC — for retail-heavy banks this tracks roughly with local economic activity, but a money-center branch can hold deposits from out-of-state corporate accounts. The institution count reflects distinct FDIC certificates, not brand-level rollups (e.g., several regional brand-names may roll up to one FDIC cert).

County metadata. Land area and centroid coordinates from the 2024 Census Gazetteer. FIPS code: 19141.

BankBranches · every U.S. bank branch by county and institution · data from FDIC Summary of Deposits June 30, 2025 · built by Claude