Credit unions in South Dakota

All 33 federally insured credit unions in South Dakota, ranked by asset size. Together they hold $6.17B in assets and serve 351,919 members. Every figure comes straight from the public NCUA Call Report.

NCUA data through Q1 2026.

#	Credit union	City	Assets	Members
1	Black Hills Credit Union	Rapid City	$2.37B	108,871
2	Dakotaland Credit Union	Huron	$739.6M	42,263
3	Sioux Falls Credit Union	Sioux Falls	$526.6M	37,283
4	Voyage Credit Union	Sioux Falls	$282.4M	19,670
5	Highmark Credit Union	Sturgis	$260.1M	13,724
6	Sioux Empire Credit Union	Sioux Falls	$212.6M	11,714
7	Service First Credit Union	Sioux Falls	$210.1M	16,466
8	Aberdeen Credit Union	Aberdeen	$200.2M	11,751
9	Sentinel Credit Union	Box Elder	$197.0M	9,857
10	Northern Hills Credit Union	Sturgis	$196.6M	12,667
11	Rapid City Medical Credit Union	Rapid City	$167.2M	8,383
12	Services Center Credit Union	Yankton	$112.6M	9,040
13	Dakota Plains Credit Union	Lemmon	$86.2M	4,900
14	Norstar Credit Union	Britton	$77.9M	2,810
15	Healthcare Plus Credit Union	Aberdeen	$69.7M	5,041
16	United Building Trades Credit Union	Rapid City	$46.5M	3,016
17	Oahe Credit Union	Pierre	$45.0M	3,565
18	Ft Randall Credit Union	Pickstown	$44.9M	3,418
19	East River Credit Union	Madison	$41.6M	3,128
20	Sioux Valley Coop Credit Union	Watertown	$41.5M	3,378
21	M O Credit Union	Huron	$41.4M	1,759
22	Watertown Employees Credit Union	Watertown	$31.8M	2,963
23	Rushmore Electric Credit Union	Rapid City	$29.2M	1,423
24	Consumer's Credit Union	Gregory	$22.1M	1,613
25	Lakota Credit Union	Kyle	$19.3M	4,125
26	Sisseton Coop Credit Union	Sisseton	$18.9M	2,216
27	Huron Area Education Credit Union	Huron	$18.5M	854
28	Palace City Credit Union	Mitchell	$16.4M	1,562
29	Army Guard Credit Union	Rapid City	$16.3M	1,163
30	Dacotah Credit Union	Rapid City	$11.1M	828
31	Huron C & N W Credit Union	Huron	$5.3M	492
32	Sisseton-Wahpeton Credit Union	Agency Village	$5.1M	1,188
33	Huron Telco Credit Union	Huron	$4.9M	788

Credit union rankings

Largest credit unionsThe top 100 by total assets. Fastest-growing credit unionsTop 100 by one-year asset growth (organic only). Most profitable credit unionsTop 100 by return on average assets.

Back to the full credit union directory, or search by name, city or charter in the CU Finder.

Compiled from public NCUA 5300 Call Report data (Q1 2026). Covers federally insured credit unions in South Dakota that filed for the quarter, ranked by total assets. Not affiliated with the NCUA.