When passed a US zip code as query parameter this API provides ZipCode, City, State, County, AreaCode, CityType, CityAliasAbbreviation, CityAliasName, Latitude, Longitude, TimeZone, Elevation, CountyFIPS, DayLightSaving, PreferredLastLineKey, ClassificationCode, MultiCounty, StateFIPS, CityStateKey, CityAliasCode, PrimaryRecord, CityMixedCase, CityAliasMixedCase, StateANSI, CountyANSI, FacilityCode, CityDeliveryIndicator, CarrierRouteRateSortation, FinanceNumber, UniqueZIPName, CountyMixedCase.

We can use this API if we need any of the above fields for our zip code.