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ZIP codes in Day County, South Dakota

Day County, South Dakota has 7 ZIP codes in this list, from 57219 to 57468. They cover 7 places, among them Bristol, Grenville, Roslyn and Waubay.

ZIP codePlaceLand area (sq mi)Map point
57219Bristol17545.288, -97.809
57239Grenville44.845.510, -97.309
57261Roslyn67.545.501, -97.540
57273Waubay17545.378, -97.295
57274Webster37345.315, -97.525
57422Andover11245.422, -97.918
57468Pierpont74.045.496, -97.813

The ZIP code areas of Day County add up to about 1,021 square miles of land (2,643 sq km) as the Census Bureau draws them. The largest is 57274 (Webster), with 373 square miles.

Using these codes

Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.

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