Every City in the USA. South Dakota ZIP-code income spreadsheet. U.S. Census Bureau, 2020-2024 American Community Survey five-year estimates and published 90% margins of error, 2024 inflation-adjusted dollars; 2025 Gazetteer ZIP Code Tabulation Areas; 2020 county/ZCTA relationships. Cite the package release ID and file SHA-256. Census ZCTAs are not a complete USPS delivery-code list. The Census Bureau did not endorse this compilation.
