Day County, South Dakota ZIP Codes

Zip Code
City
Population ↓
57274Webster2,621
57273Waubay1,165
57219Bristol552
57239Grenville358
57468Pierpont279
57261Roslyn277
57422Andover174

Overview of ZIP Codes in Day 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.
7
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 7 ZCTAs in Day County, South Dakota (US Census).

Sources

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

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