Credit Unions in Watertown, South Dakota
2 federally insured credit unions — NCUA Q4 2025
Best Credit Union in Watertown
SIOUX VALLEY COOP
Top RatedWatertown, South Dakota
All Credit Unions in Watertown
Compare Credit Unions in Watertown
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Compare Credit UnionsFrequently Asked Questions
There are 2 federally insured credit unions in Watertown, South Dakota according to NCUA Q4 2025 data. The largest by assets is SIOUX VALLEY COOP with $41.2M in total assets.
Yes. All credit unions listed here are federally insured by the National Credit Union Administration (NCUA) up to $250,000 per depositor, per ownership category — the same protection offered by FDIC insurance at banks.
Each credit union has its own membership eligibility criteria — often based on employer, community, association, or family ties. Click on any credit union to view its membership type and contact information. Many Watertown credit unions offer community charters open to anyone who lives, works, or worships in the area.