SENTINEL
Federal • Ellsworth AFB, South Dakota • Est. 1955
Quick Facts
- Charter Number
- #10257
- Type
- Federal
- Established
- 1955
- Headquarters
- Ellsworth AFB, South Dakota 57706
- Address
- 2723 LeMay Blvd
- Branches
- 8
- ATMs
- 5
- Members
- 9,857
- Membership Type
- Other/Unknown
CUScore Financial Grade
Based on Q1 2026 NCUA Call Report data
Under CUScore's rules, this institution reports a net worth ratio of at least 10% and a delinquency rate below 1%. This simplified grade is informational, is not an official NCUA rating, and does not determine regulatory or deposit-insurance status.
Financial Overview
Total Assets
Members
9,857 total members
Total Loans
Outstanding loan portfolio
Net Worth Ratio
Financial Details
| Metric | SENTINEL |
|---|---|
| Total Assets | $197.0M |
| Members | 9,857 |
| Loans Outstanding | $126.2M |
| Shares & Deposits | $174.2M |
| Net Worth | $21.2M |
| Net Worth Ratio | 10.78% |
| Loan-to-Share Ratio | 72.5% |
| Delinquency Rate | 0.33% |
| Net Income | +$277,714 |
Source: Q1 2026 NCUA Call Report • Reporting date: 3/31/2026
Branch Locations
8 locations · 5 ATMs
Main
Main Office2723 LeMay Blvd
Ellsworth AFB, SD 57706
Triple Crown
4011 Triple Crown Dr
Rapid City, SD 57701-2098
Haines
1430 Haines Ave Ste 101
Rapid City, SD 57701-0612
Winner
511 E 2nd St
Winner, SD 57580-2052
Radar Hill Branch
22752 Mule Deer Trl
Box Elder, SD 57719-9456
Who Can Join SENTINEL?
Membership Type: Other/Unknown
Membership eligibility for SENTINEL may vary. Contact the credit union directly to confirm qualification requirements.
Contact SENTINEL directly or visit their website for the most accurate and up-to-date membership eligibility information.
Find More Credit Unions in South Dakota
Review the Q1 2026 statewide dataset, aggregate ratios, and institutions ranked by reported assets.
View South Dakota RankingsFrequently Asked Questions
SENTINEL is listed as federally insured in the Q1 2026 NCUA dataset. NCUA share insurance generally covers qualifying accounts up to the standard maximum amount, with coverage depending on account ownership categories. Verify current status and coverage for your accounts with the NCUA or the institution.
As of the Q1 2026 NCUA Call Report, SENTINEL has 9,857 members and a potential membership field of 197,733 people.
SENTINEL's reported net worth ratio is 10.78% as of Q1 2026. The NCUA's standard net worth ratio threshold for "well capitalized" is 7%, although official status can involve additional rules.
SENTINEL operates 8 branch locations and has access to 5 ATMs. The main office is located at 2723 LeMay Blvd, Ellsworth AFB, SD 57706.
SENTINEL was established in 1955. It is a federal credit union chartered under charter number 10257. The institution has been serving members for 71 years.
Data sourced from the NCUA Quarterly Call Report (Q1 2026). CUScore is an independent directory and is not affiliated with the NCUA or SENTINEL. All financial data is for informational purposes only.