Credit union · NCUA insured
Rimrock Credit Union
A $63.5M credit union headquartered in Billings, MT, with 3,252 members and 1 branch in Montana. Best rates: CDs 3.60% and savings 1.00% APY.
Rimrock Credit Union Carrot Score
78
Carrot Score
Higher than 46% of U.S. banks and credit unions
#6 of 12 in Billings, MT metroHow the score works →
Deposits are federally insured by the NCUA up to $250,000 per depositor.
About Rimrock Credit Union
Headquartered in Billings, Montana, Rimrock Credit Union is a member-owned, not-for-profit financial cooperative.
- Headquarters
- 952 Central Ave, Billings, MT 59102-5845
- NCUA charter
- 63183
Membership
Who can join
This may be incomplete or out of date, so check with the credit union before you apply.
Employers and groups
- Employees of Montana-Dakota Utilities are eligible for membership.
- Employees of SuperValu are eligible for membership.
- Members and employees of unions affiliated with the Yellowstone Valley Central Labor Council are eligible for membership.
- Persons retired as former employees of eligible employers are eligible for membership.
Military, government and schools
- Employees of the City of Billings are eligible for membership.
- Employees of Yellowstone County are eligible for membership.
4 more ways to join
Military, government and schools
- Employees of Yellowstone City-County Health Department are eligible for membership.
- All public employees in all adjoining counties of Yellowstone County are eligible for membership.
Family and household
- Family members of eligible individuals, including spouses, children, step-children, siblings, and grandparents, are eligible for membership.
Other ways
- Licensees of the City of Billings or Yellowstone County (including business license holders or individuals with vehicles registered in Yellowstone County) are eligible for membership.
Cost to join
- Membership begins with opening a Share Savings Account with a minimum deposit of $25.
Branches
1 branch in Montana
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Montana
1 branch
- Rimrock Credit UnionMain office952 Central Ave, Billings, MT 59102Directions
Walk-in offices from the NCUA directory as of March 31, 2026. Directions open Google Maps. A nearby branch doesn’t mean you can join or open an account.
Financial details
Well capitalizedas reported to the NCUA
| Measure | This credit union | Peers’ middle | Strongest quarter |
|---|---|---|---|
| CapitalNet worth ratio | 15.02% | 14.31% | 19.38% or more |
| Troubled loans60+ days late | 0.15% | 0.70% | 0.18% or less |
| ProfitabilityReturn on assets | 1.33% | 0.65% | 1.19% or more |
| LendingLoans per $100 deposited | $31 | $59 | — |
- CapitalNet worth ratio15.02%Peers’ middle 14.31% · Top 25% 19.38%+
- Troubled loans60+ days late0.15%Peers’ middle 0.70% · Top 25% ≤0.18%
- ProfitabilityReturn on assets1.33%Peers’ middle 0.65% · Top 25% 1.19%+
- LendingLoans per $100 deposited$31Peers’ middle $59
Compared with the 2,478 credit unions with under $100 million in assets. The strongest quarter is what the best 25% of them reach: more capital and profit, fewer troubled loans. Lending has no better end.Troubled loans are loans 60 or more days late.
Regulators’ own ratings of Rimrock Credit Union are confidential. These figures are what it reports to the NCUA each quarter, set beside its peers; they aren’t a rating.