NCUA-insured credit union
Rimrock — Billings, MT
Credit Union headquartered in Billings, Montana.
Source: NCUA call report data, data as of March 31, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 952 Central Ave Billings, MT 59102 |
| County | Yellowstone |
| Website | not published in NCUA data |
| Phone | (406) 248-3685 |
NCUA record
| NCUA Charter | 63183 |
| Federal Reserve RSSD ID | 604994 |
| Status | Active |
| Charter type | 2 (STATE) |
| Financials as of | March 31, 2026 |
How to find your Rimrock routing number
NCUA does not publish ABA routing numbers, and many credit unions use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this credit union, the "account details" screen in its online banking, or its official website.
Share one credit line with people you trust. Everyone gets their own limit.
Offices
| Rimrock Credit Union main office Billings, MT |
952 Central Ave, 59102 (406) 248-3685 9:00 am to 5:30 pm |
Where Rimrock has offices
Cities with the most Rimrock offices
Other credit unions headquartered in Billings
| Altana | $660.22 million |
| Valley Financial | $593.70 million |
| Billings | $218 million |
Largest credit unions headquartered elsewhere in Montana
| Whitefish Credit Union Association Whitefish | $2.06 billion |
| Clearwater Missoula | $1.15 billion |
| Rocky Mountain Helena | $424.26 million |
| Park Side Financial Whitefish | $389.09 million |
| Montana Great Falls | $358.93 million |
| Intrepid Helena | $310.48 million |
| 1st Liberty Great Falls | $217.53 million |
| Southwest Montana Community Anaconda | $202.59 million |
Compare before you open an account: today's CD and savings rates, the CD calculator and the savings calculator.
