# PostGrid US & Canada Address Verification API

**Canonical:** https://apis.io/apis/postgrid/address-verification-api/  
**Provider:** PostGrid — https://apis.io/providers/postgrid/  
**Base URL:** https://api.postgrid.com/addver  
**Documentation:** https://avdocs.postgrid.com/

PostGrid US & Canada Address Verification API is one of 3 APIs that [PostGrid](https://apis.io/providers/postgrid/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Address Verification, Address Validation, Address Autocomplete, CASS, and Geocoding. The published artifact set on APIs.io includes API documentation.

A REST API for real-time address autocomplete, verification, and standardization for US and Canadian addresses. Supports CASS-certified validation, geocoding (latitude/longitude), freeform address parsing, and batch verification for large-scale processing. Authenticated via x-api-key header with a default rate limit of 5 requests per second.

## Machine-readable artifacts (1)

- **Documentation** — https://avdocs.postgrid.com/

## Other PostGrid APIs (2)

- [PostGrid Print & Mail API](https://apis.io/apis/postgrid/print-mail-api/)
- [PostGrid International Address Verification API](https://apis.io/apis/postgrid/international-address-verification-api/)

## Tags

Address Verification, Address Validation, Address Autocomplete, CASS, Geocoding, US, Canada

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/postgrid/address-verification-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/postgrid/.