Top Global Zip Code Verification API alternatives in 2025

1. Postal Code Global API

Postal Code Global API is a powerful and versatile tool that provides users with seamless access to a vast repository of zip code data, making it an invaluable asset for a wide range of applications. This sophisticated API is designed to meet the needs of developers, businesses, and organizations looking to streamline their processes, improve user experience, and optimize location-based functionality.

Key Features and Capabilities

Get Information by Zip Code

{"query":{"codes":["99950"],"country":null},"results":{"99950":[{"postal_code":"99950","country_code":"FI","latitude":"69.47290000","longitude":"25.95270000","city":"Karigasniemi","state":"Lapland","city_en":"Karigasniemi","state_en":"Lapland","state_code":"19","province":"Pohjois-Lappi","province_code":"197"},{"postal_code":"99950","country_code":"MX","latitude":"21.46910000","longitude":"-103.10430000","city":"El Rescoldo","state":"Zacatecas","city_en":"El Rescoldo","state_en":"Zacatecas","state_code":"32","province":"Apozol","province_code":"001"},{"postal_code":"99950","country_code":"TR","latitude":"40.32580000","longitude":"37.55550000","city":"Yenierenky","state":"Kktc","city_en":"Yenierenky","state_en":"Kktc","state_code":"","province":"skele","province_code":""},{"postal_code":"99950","country_code":"US","latitude":"55.34220000","longitude":"-131.64780000","city":"Ketchikan","state":"Alaska","city_en":"Ketchikan","state_en":"Alaska","state_code":"AK","province":"Ketchikan","province_code":""}]}}

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Check out the API documentation to get started.

2. Zip Code Finder API

Zip Code Finder API is a gateway to comprehensive information for every ZIP Code in the United States. Effortlessly retrieve details by inputting ZIP Codes directly or explore locations using city and state parameters.

Key Features and Capabilities

Zip Code

[{"zip_code": "04101", "valid": true, "city": "Portland", "state": "ME", "county": "Cumberland County", "timezone": "America/New_York", "area_codes": ["207"], "country": "US", "lat": "43.6608", "lon": "-70.2613"}]

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Read our technical guides for implementation tips.

3. Global Postcode Information API

Global Postcode Information API provides accurate worldwide postal code data for location-based services, logistics, e-commerce, and more. This API simplifies addressing and enhances precision.

Key Features and Capabilities

Get Location Information

{ "results" : [ { "address_components" : [ { "long_name" : "90001", "short_name" : "90001", "types" : [ "postal_code" ] }, { "long_name" : "Firestone Park", "short_name" : "Firestone Park", "types" : [ "neighborhood", "political" ] }, { "long_name" : "Los Angeles County", "short_name" : "Los Angeles County", "types" : [ "administrative_area_level_2", "political" ] }, { "long_name" : "California", "short_name" : "CA", "types" : [ "administrative_area_level_1", "political" ] } ] } ] }

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

View the integration guide for step-by-step instructions.

4. Zip Code USA API

Zip Code USA API quickly retrieves precise location details within the United States using this efficient and accurate zip code lookup solution.

Key Features and Capabilities

Get Location Information

{"zip_code":"90001","primary_city":"Los Angeles","state":"CA","timezone":"America/Los_Angeles","latitude":33.97,"longitude":-118.24}

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Check out the API documentation to get started.

5. Zip Code Details US API

Zip Code Details US API offers accurate geolocation data and information for US zip codes, enhancing address validation and location-based services.

Key Features and Capabilities

Information by Zip Code

{"Code":200,"Description":"OK","Data":[{"ZipCode":"96162","City":"TRUCKEE","County":"NEVADA","State":"CA","CountyFIPS":"057","StateFIPS":"06","TimeZone":"8","DayLightSavings":"Y","ZipLatitude":"39.326668","ZipLongitude":"-120.342310"}]}

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Visit the developer docs for complete API reference.

6. USA Zip Code Data API

USA Zip Code Data API is a service that provides developers with access to a comprehensive database of US zip codes and related information.

Key Features and Capabilities

Get US Zip Code

[{"AreaCode":"412","CarrierRouteRateSortation":"D","City":"PITTSBURGH","CityAliasAbbreviation":"","CityAliasCode":"","CityAliasMixedCase":"Penn Hills","CityAliasName":"PENN HILLS","CityDeliveryIndicator":"Y","CityMixedCase":"Pittsburgh","County":"ALLEGHENY","CountyANSI":"003","CountyFIPS":"003","CountyMixedCase":"Allegheny","DayLightSaving":"Y","Elevation":1168,"FacilityCode":"B","FinanceNumber":416608,"Latitude":40.460122,"Longitude":-79.835972,"MultiCounty":" ","PreferredLastLineKey":"X1A543","PrimaryRecord":" ","State":"PA","StateANSI":42,"StateFIPS":42,"TimeZone":5,"UniqueZIPName":"","ZipCode":15235}]

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

View the integration guide for step-by-step instructions.

7. Postal Code Location API

Postal Code Location API provides detailed information on all U.S. zip codes and allows you to search by zip code, city, and state.

Key Features and Capabilities

Zip Code

[{"zip_code": "97202", "valid": true, "city": "Portland", "state": "OR", "county": "Multnomah County", "timezone": "America/Los_Angeles", "area_codes": ["971"], "country": "US", "lat": "45.4803", "lon": "-122.6451"}]

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Read our technical guides for implementation tips.

8. Postal Code to State API

Postal Code to State API is a versatile tool that allows users to convert zip codes to their corresponding names or state codes.

Key Features and Capabilities

Converter Zip Code to State

{"state":"NY"}

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Check out the API documentation to get started.

9. Proximity Zip Code Finder API

Proximity Zip Code Finder API is designed to give users access to comprehensive zip code data based on geographic coordinates or a specific zip code.

Key Features and Capabilities

Latitude and Longitude Zip Proximity

[{"postal_code":10279,"place_name":"New York","state_name":"New York","state_code":"NY","county_name":"New York","county_code":61,"latitude":40.7127,"longitude":-74.0078}]

Nearby Zip Codes

[{"postal_code":10199,"place_name":"New York","state_name":"New York","state_code":"NY","county_name":"New York","county_code":61,"latitude":40.7503,"longitude":-74.0006}]

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Check out the API documentation to get started.

10. Geographical Positioning API

Geographical Positioning API provides information to enable precise location-based services, including geocoding by latitude and longitude, zip code, and query parameter lookup.

Key Features and Capabilities

Geocode Coordinates

[{"name":"Seattle","lat":47.6038321,"lon":-122.330062,"country":"US","state":"Washington"}]

Geocode by Zip

{"zip":"90210","name":"Beverly Hills","lat":34.0901,"lon":-118.4065,"country":"US"}

Geocode by City

[{"name":"Berlin","lat":52.5170365,"lon":13.3888599,"country":"DE"}]

Pros and Cons

Ideal Use Cases

How It Differs from Other APIs

Visit the developer docs for complete API reference.

Conclusion

Postal Code Global API stands out for its international coverage, while the Zip Code Finder API excels in providing detailed U.S. data. For businesses focused on logistics and location-based services, the Global Postcode Information API and Proximity Zip Code Finder API offer robust solutions. Ultimately, the best choice will depend on your specific requirements, including geographic focus, data needs, and integration capabilities.