ZIP Codes are administrative entities of the U.S. Postal Service. As such:
ZIP Codes are summarized in the economic census for individual 5-digit ZIP Codes in the Retail Trade sector and several of the Services sectors. These statistics are limited to a count of the establishments in each industry by sales/receipts/revenue-size range of establishments.
Note: These ZIP Codes are reported by businesses or coded from addresses. They are not the ZIP Code Tabulation Areas (ZCTAs) published in the Decennial Census.