zipcodestack.com API Documentation

Use the zipcodestack.com API to validate and retrieve location information for any zip/postal code and seamlessly integrate it into your product using one of our many SDKs or other pre-built integrations.

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Getting started

To get started, you have to register an API key here. Then, follow our quickstart guide or continue reading our documentation and integrate zipcodestack, using our HTTP API and dedicated client SDKs. Ultimately, upgrade your plan to access all data & endpoints.

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Guides

SDKs

Developer experience matters to us. Integrate zipcodestack using one of our pre-built integrations.

Authentication

Learn how to authenticate with our API using HTTP headers or GET parameters.

Rate Limit & Quotas

Understand which endpoints count towards your monthly request quota and impact your rate limit.

Request Status Codes

Read about the different success & error status codes returned by the zipcodestack.com API.

API Status

Learn how to programatically retrieve your API quota and check whether the API is up.

Phone Number Validation & Verification

Learn how to retrieve information about any phone number.