Zip Code to County Spreadsheet

This free spreadsheet allows for cross-walking, or lookup of county by ZIP codes, revealing county distributions and various ratio metrics that can inform urban planning, resource allocation, and demographic analysis. It also contains FIPS codes for lookup of county by FIPS.

ZIP, COUNTY FIPS, County Clean, USPS_ZIP_PREF_CITY, USPS_ZIP_PREF_STATE, RES_RATIO, BUS_RATIO, OTH_RATIO, TOT_RATIO