Census ZCTA 2020

US Census Bureau ZIP Code Tabulation Areas (ZCTAs): ZIP Code Tabulation Areas or ZCTAs (pronounced zik-tahs) are a geographic product of the U.S. Census Bureau created to allow mapping, display, and geographic analyses of the United States Postal Service (USPS) Zone Improvement Plan (ZIP) Codes dataset. Updated every 10 years, last updated for 2020. Summary of 2020 ZCTA Delineation Methodology: - Each assigned 2020 Census tabulation block is part of one distinct 2020 ZCTA. - All 2020 ZCTA Codes are current valid USPS ZIP Codes (as of January 1, 2020). - Not all valid ZIP Codes are represented by a 2020 ZCTA. - For tabulation blocks that contain housing units, the ZCTA represents the ZIP Code associated with the most addresses in that block. - All inhabited areas have 2020 ZCTA coverage. - 2020 ZCTA coverage includes zero population blocks that are enclosed within a ZCTA, located along the fringes of a ZCTA, or form a small gap between ZCTAs. - Uninhabited areas (land and water areas) over two square miles are potentially left unassigned from 2020 ZCTA coverage. - 2020 ZCTAs may form noncontiguous areas (e.g., islands or enclaves). - A 2020 ZCTA may represent a single institutional or corporate delivery point address. - 2020 ZCTAs may represent mixed mail delivery (non-unique), firm or organization-specific (unique), or post office box-only (PO Box) ZIP Codes. - All 2020 ZCTA boundaries are 2020 Census tabulation block boundaries.