@mardillu/us-cities-utils
A lightweight TypeScript utility library to work with US cities and ZIP codes — perfect for filters, maps, address lookups, and geolocation logic.
states-utils
A rich library that provides various utility functions to get/check name or USPS code or capital of states or territories and much more
zip-state
Lightweight mapping of USPS ZIP Codes to their assigned region.
usa-states
Helper library for getting all of the states and territories of the United States in the specific format that you need.