Brown County, South Dakota ZIP Codes

Zip Code
City
Population ↓
57401Aberdeen31,939
57445Groton2,072
57441Frederick670
57479Warner625
57432Claremont507
57427Bath384
57449Houghton357
57433Columbia318
57481Westport271
57460Mansfield257
57474Stratford237
57446Hecla223
57426Barnard42
57439Ferney0

Overview of ZIP Codes in Brown County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
14
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Brown County, South Dakota (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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