NCUA-insured credit union
1st Northern California — Martinez, CA
Credit Union headquartered in Martinez, California.
Source: NCUA call report data, data as of March 31, 2026, fetched September 5, 2026
Headquarters and contact
| Address | Po Box 509 Martinez, CA 94553 |
| County | Contra Costa |
| Website | not published in NCUA data |
| Phone | (925) 228-7550 |
NCUA record
| NCUA Charter | 68668 |
| Federal Reserve RSSD ID | 11387 |
| Status | Active |
| Charter type | 2 (STATE) |
| Financials as of | March 31, 2026 |
How to find your 1st Northern California 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.
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Offices
| Martinez main office Martinez, CA |
1111 Pine St, 94553 (925) 228-7550 M-W 9:00 am - 4:00 pmTh 9:00 am - 6:00 pm F 9:00 am - 5:00 pm |
| Benicia Benicia, CA |
560 1St St Ste B106, 94510 (925) 228-7550 M - W 9:00 am - 4:00 pmTh 9:00 am - 6:00 pm F 9:00 am - 5:00 pm |
| Brentwood Brentwood, CA |
8660 Brentwood Blvd Ste E, 94513 (888) 387-8632 M-W 9:00-4:00, Th 9:00-6:00, F 9:00-5:00 |
| Muir Station Martinez, CA |
538 Center Ave, 94553 (925) 228-7550 M - W 9:00 am - 4:00 pmTh 9:00 am - 6:00 pm F 9:00 am - 5:00 pm |
| Pittsburg/Antioch Pittsburg, CA |
4261 Century Blvd, 94565 (925) 228-7550 M - W 9:00 am - 4:00 pmTh 9:00 am - 6:00 pm F 9:00 am - 5:00 pm |
| Richmond Richmond, CA |
2500 Nevin Ave, 94804 (925) 228-7550 M - W 9:00 am - 4:00 pmTh 9:00 am - 6:00 pm F 9:00 am - 5:00 pm |
Where 1st Northern California has offices
Cities with the most 1st Northern California offices
Other credit unions headquartered in Martinez
| Mckesson & Healthcare Providers | $93.29 million |
| Shell Western States | $69.33 million |
Largest credit unions headquartered elsewhere in California
| Schoolsfirst Santa Ana | $36.74 billion |
| First Technology San Jose | $28.58 billion |
| the Golden 1 Sacramento | $21.74 billion |
| Redwood Santa Rosa | $9.95 billion |
| Logix Valencia | $9.72 billion |
| Patelco Dublin | $9.62 billion |
| Star One Sunnyvale | $9.58 billion |
| San Diego County San Diego | $9.38 billion |
Compare before you open an account: today's CD and savings rates, the CD calculator and the savings calculator.
