ZipCodeAPI

About ZipCodeAPI

ZipCodeAPI is a web API for calculating distances, radii, and locations based on US zip codes and Canadian postal codes. Core features include calculating distance between two zip codes, finding all zip codes within a given radius of a zip code, converting a zip code to its primary location (city, state, latitude, longitude, time zone, and NPA area codes), finding possible zip codes for a given city, generating custom SQL WHERE clauses for location-based database searches, and matching zip codes within a list that fall within a specified distance of each other.

The service is aimed at developers building forms, checkout flows, location-based search, or matching tools that need to derive or validate geographic information from zip codes, such as auto-filling city/state fields or restricting results to a service area.

Pricing is tiered by request volume: a Free plan (10 requests/hour, 240/day), Small ($199/year, 200/hour), Medium ($499/year, 2,500/hour), Large ($2,000/year, 12,500/hour), Extra Large ($4,000/year, 50,000/hour), and an Unlimited enterprise plan ($10,000/year) with unlimited requests per hour.

Key features

• Calculate distance between two US or Canadian zip/postal codes
• Find all zip codes within a given radius of a zip code
• Convert a zip code to city, state, latitude, longitude, and time zone
• Look up possible zip codes for a given city
• Build custom SQL WHERE clauses for latitude/longitude-based searches
• Match zip codes in a list that are within a specified distance of each other

Frequently asked questions