According to the United States Census Bureau American Community Survey extract reviewed in August 2026 against our methodology, this directory covers 33,099 ZIP Code Tabulation Areas.

Download the state-level summary (CSV) , open extract wired into this page's Dataset JSON-LD.

plainzip is a data-journalism publisher: we compile public datasets, verify them against their official sources, and present them in plain language. Editorial standards, sourcing, and how we handle corrections are described on our about and methodology pages.