NCUA-insured credit union
Service First — Sioux Falls, SD
Credit Union headquartered in Sioux Falls, South Dakota.
Source: NCUA call report data, data as of March 31, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 3901 East 10Th Street Sioux Falls, SD 57103 |
| County | Minnehaha |
| Website | not published in NCUA data |
| Phone | (605) 336-1047 |
NCUA record
| NCUA Charter | 77 |
| Federal Reserve RSSD ID | 878674 |
| Status | Active |
| Charter type | 1 (NCUA) |
| Financials as of | March 31, 2026 |
How to find your Service First 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
| Service First Federal Credit Union main office Sioux Falls, SD |
3901 E 10Th St, 57103 (605) 336-1047 Monday and Friday Lobby 9:00AM-5:30 PM Monday and Friday Drive-up 8:00AM-6:00PM Tueday Thru Thursday Lobby 9:00AM-4:30PM Tue |
| Falls Landingl Branch Sioux Falls, SD |
1300 N Morrell Ave, 57103 (605) 336-3775 Monday, Tuesday & Wednesday 9:00AM-4:30PM Thursday & Friday 8:00AM-5:30PM |
| Southwest Branch Sioux Falls, SD |
3600 S Kiwanis Ave, 57105 (605) 357-8085 Monday - Friday Lobby 9:00AM-4:30PM Monday - Friday Drive-Up 8:00AM-5:30PM Saturday 9:00AM-1:00PM |
Where Service First has offices
Cities with the most Service First offices
Other credit unions headquartered in Sioux Falls
Largest credit unions headquartered elsewhere in South Dakota
| Black Hills Rapid City | $2.37 billion |
| Dakotaland Huron | $739.56 million |
| Highmark Rapid City | $260.08 million |
| Area Aberdeen | $200.24 million |
| Sentinel Box Elder | $197.02 million |
| Northern Hills Sturgis | $196.60 million |
| Aspen Rapid City | $167.16 million |
| Explorers Yankton | $112.62 million |
Compare before you open an account: today's CD and savings rates, the CD calculator and the savings calculator.
