Sioux County bank branches Iowa · 21 branches · 9 institutions · $2.82B deposits

Every FDIC-insured bank branch in Sioux County, Iowa as of June 30, 2025. County land area: 768 square miles, 2.7 branches per 100 sq mi.

Branches
21
Institutions
9
Total Deposits
$2.82B
Avg Deposits / Branch
$134.4M

All institutions in Sioux County

InstitutionBranchesDeposits
American State Bank 9 $1.14B
Iowa State Bank 3 $417.7M
Peoples Bank 3 $563.4M
Citizens State Bank 1 $26.0M
Northwest Bank 1 $98.2M
Premier Bank 1 $295.2M
The Security National Bank of Sioux City, Iowa 1 $153.1M
Primebank 1 $72.9M
Rivers Edge Bank 1 $57.0M
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: 19167.

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