Credit Union Routing Number
Sentinel Federal Credit Union Routing Number
The routing number for Sentinel Federal Credit Union is 291479291. It is a credit union in Ellsworth Afb, South Dakota, NCUA charter 10257.
Data as of · size and membership from the NCUA 5300 call report. How we update
About Sentinel Federal Credit Union
Sentinel Federal Credit Union is based in Ellsworth Afb, South Dakota, and has been chartered since 1955. It reported $199.3M in assets for Q2 2026, the 10th largest of 33 credit unions headquartered in South Dakota and 1278th of 4,252 nationally. Assets were $190.1M a year earlier (Q2 2025), so the credit union is larger now. It counted 10,004 members on that report. The NCUA lists 8 branch locations for the credit union.
Record
- Routing number
- 291479291
- NCUA charter number
- 10257
- RSSD ID
- 727183
- Headquarters
- Ellsworth Afb, South Dakota 57706
- Chartered
- 1955
- NCUA insured since
- January 4, 1971
- Total assets (Q2 2026)
- $199.3M
- Members (Q2 2026)
- 10,004
- Branch locations
- 8
- Routing record refreshed
- October 8, 2026
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View Sentinel Federal Credit Union's full profile →
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Regulator records: NCUA credit union profile (charter 10257) · FFIEC NIC profile (RSSD 727183)