South Dakota
Postal abbreviation SD. 385 ZIP codes across 66 counties.
| Population | 907,428 |
|---|---|
| Postal abbreviation | SD |
| ZIP codes | 385 ZIP codes → |
| Area codes | 605 |
| Time zones | Central, Mountain |
| Counties | 66 |
Largest cities by population
Sioux Falls · 201,469Rapid City · 77,946Aberdeen · 28,189Brookings · 23,948Watertown · 23,044Mitchell · 15,649Yankton · 15,540Huron · 14,385
Largest counties by population
Minnehaha County · 203,289Pennington County · 113,512Lincoln County · 70,638Brown County · 37,877Brookings County · 35,353Meade County · 30,546Codington County · 28,767Lawrence County · 27,233Yankton County · 23,414Davison County · 19,952
Counties in South Dakota
Aurora CountyBeadle CountyBennett CountyBon Homme CountyBrookings CountyBrown CountyBrule CountyBuffalo CountyButte CountyCampbell CountyCharles Mix CountyClark CountyClay CountyCodington CountyCorson CountyCuster CountyDavison CountyDay CountyDeuel CountyDewey CountyDouglas CountyEdmunds CountyFall River CountyFaulk CountyGrant CountyGregory CountyHaakon CountyHamlin CountyHand CountyHanson CountyHarding CountyHughes CountyHutchinson CountyHyde CountyJackson CountyJerauld CountyJones CountyKingsbury CountyLake CountyLawrence CountyLincoln CountyLyman CountyMarshall CountyMcCook CountyMcPherson CountyMeade CountyMellette CountyMiner CountyMinnehaha CountyMoody CountyOglala Lakota CountyPennington CountyPerkins CountyPotter CountyRoberts CountySanborn CountySpink CountyStanley CountySully CountyTodd CountyTripp CountyTurner CountyUnion CountyWalworth CountyYankton CountyZiebach County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.