Instantly look up any of the 42,000+ active US ZIP codes to find the associated city, state, county, and GPS coordinates. Enter a 5-digit ZIP code to retrieve full location details. Free, no sign-up required.
ZIP stands for Zone Improvement Plan. US ZIP codes were introduced by the United States Postal Service (USPS) in 1963 to improve mail sorting efficiency. Each 5-digit ZIP code identifies a specific postal delivery area. The first digit represents a broad geographic region, and subsequent digits narrow down to a specific post office or delivery area.
For each ZIP code, the lookup provides the primary city name, state abbreviation, county, latitude and longitude coordinates, and time zone. This data is useful for address validation, delivery routing, demographic research, and geographic analysis.