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South Dakota ZIP codes

South Dakota has 385 ZIP codes (57001–57799) across 363 cities and towns and 66 counties.

ZIP codes
385
With delivery area
375
Population in ZIPs
906,188
Cities & towns
363
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Richest ZIP codes in South Dakota Most expensive ZIP codes

Zoom in to see ZIP code boundaries. Click a dot to open a ZIP code, or anywhere else to see which ZIP it's in.

Largest cities in South Dakota

South Dakota ZIP codes by county

Most populated South Dakota ZIP codes

  1. 57106 Sioux Falls – 51,907
  2. 57701 Rapid City – 45,795
  3. 57702 Rapid City – 35,595
  4. 57103 Sioux Falls – 35,582
  5. 57108 Sioux Falls – 33,966
  6. 57401 Aberdeen – 31,939
  7. 57104 Sioux Falls – 26,963
  8. 57201 Watertown – 26,781
  9. 57006 Brookings – 24,192
  10. 57110 Sioux Falls – 23,313

All South Dakota cities and towns

Frequently asked questions

How many ZIP codes are in South Dakota?

South Dakota has 385 ZIP codes: 375 with a delivery area and 10 PO Box or single-organization ZIP codes.

What ZIP codes does South Dakota use?

South Dakota ZIP codes run from 57001 to 57799.

Which South Dakota ZIP code has the most people?

ZIP code 57106 in Sioux Falls has the largest population, about 51,907 residents (ACS 2020–2024).