South Dakota has about 37 different credit unions with BLACK HILLS FEDERAL CREDIT UNION being the largest credit union in South Dakota having more than $1.95 billion in total assets and over 81,466 members.
| Name | Membership | Total Assets |
|---|---|---|
| ABERDEEN FEDERAL CREDIT UNION2324 8TH AVE NE ABERDEEN, SD 57401 | Community credit unions, urban or rural, other than those designated 'low income' | $194,753,900 |
| AVANTI FEDERAL CREDIT UNION1620 4th St NE WATERTOWN, SD 57201-8604 | Community - Rural District | $29,608,037 |
| BLACK HILLS FEDERAL CREDIT UNION2700 N Plaza Dr RAPID CITY, SD 57702-9303 | Community - Rural District | $1,952,364,697 |
| CONSUMER'S FEDERAL CREDIT UNION301 highway 18 west GREGORY, SD 57533-2203 | Community credit unions, urban or rural, other than those designated 'low income' | $16,395,298 |
| COTEAU VALLEY FEDERAL CREDIT UNION212 W Hickory St SISSETON, SD 57262-1826 | Multiple common bond - other | $14,921,219 |
| DACOTAH FEDERAL CREDIT UNION2990 E HIGHWAY 44 RAPID CITY, SD 57703 | Community credit unions, urban or rural, other than those designated 'low income' | $12,053,234 |
| DAKOTA PLAINS FEDERAL CREDIT UNION519 Main Ave LEMMON, SD 57638-1421 | Community credit unions, urban or rural, other than those designated 'low income' | $72,194,315 |
| DAKOTA RAIL LINE FEDERAL CREDIT UNION270 4th St NE HURON, SD 57350-1614 | Service - Transportation | $4,656,068 |
| DAKOTA STAR FEDERAL CREDIT UNION3122 W SAINT LOUIS ST RAPID CITY, SD 57702-2354 | Community credit unions, urban or rural, other than those designated 'low income' | $35,719,055 |
| DAKOTALAND FEDERAL CREDIT UNION2297 Kansas Ave SE HURON, SD 57350 | Community - Rural District | $531,219,752 |
| EAST RIVER FEDERAL CREDIT UNION220 S Harth Ave MADISON, SD 57042-2916 | Community credit unions, urban or rural, other than those designated 'low income' | $46,123,461 |
| EXPLORERS FEDERAL CREDIT UNION609 W 21st St YANKTON, SD 57078 | Community credit unions, urban or rural, other than those designated 'low income' | $101,796,717 |
| FIRST CENTURY FEDERAL CREDIT UNION1512 E Benson Rd SIOUX FALLS, SD 57104 | Multiple common bond - Primarily transportation | $30,396,823 |
| FT RANDALL FEDERAL CREDIT UNION231 Lake St NW WAGNER, SD 57380 | Community - Rural District | $33,523,587 |
| GOOD SAMARITAN FEDERAL CREDIT UNION4800 W 57TH ST SIOUX FALLS, SD 57108 | Service - Health Care | $26,738,003 |
| HB TELCO FEDERAL CREDIT UNION375 3rd St SW HURON, SD 57350-1924 | Multiple common bond - Primarily communications and utilities | $5,676,151 |
| HEALTHCARE PLUS FEDERAL CREDIT UNION203 S Dakota St ABERDEEN, SD 57401 | Community credit unions, urban or rural, other than those designated 'low income' | $59,207,045 |
| HIGHMARK FEDERAL CREDIT UNION725 5th St RAPID CITY, SD 57701 | Community - Rural District | $203,347,478 |
| HURON AREA EDUCATION FEDERAL CREDIT UNION1855 Arizona Ave SW HURON, SD 57350-6582 | Educational | $15,980,087 |
| LAKOTA FEDERAL CREDIT UNION1 Main BIA 2 KYLE, SD 57752 | Community credit unions, urban or rural, other than those designated 'low income' | $10,024,566 |