# HUD User USPS ZIP Code Crosswalk API

**Canonical:** https://apis.io/apis/hud/hud-user-usps-zip-code-crosswalk-api/  
**Provider:** HUD - US Department of Housing and Urban Development — https://apis.io/providers/hud/  
**Base URL:** https://www.huduser.gov/hudapi/public/usps  
**Documentation:** https://www.huduser.gov/portal/dataset/uspszip-api.html

HUD User USPS ZIP Code Crosswalk API is one of 10 APIs that [HUD - US Department of Housing and Urban Development](https://apis.io/providers/hud/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include ZIP Code, Crosswalk, Geography, and Census. The published artifact set on APIs.io includes API documentation and authentication docs.

Maps USPS ZIP codes to and from census tracts, counties, CBSAs, congressional districts, and county subdivisions. Supports geographic lookups and crosswalk queries for housing analysis.

## Machine-readable artifacts (2)

- **Documentation** — https://www.huduser.gov/portal/dataset/uspszip-api.html
- **Authentication** — https://www.huduser.gov/hudapi/public/register

## Other HUD - US Department of Housing and Urban Development APIs (9)

- [HUD User Fair Market Rents API](https://apis.io/apis/hud/hud-user-fair-market-rents-api/)
- [HUD User Income Limits API](https://apis.io/apis/hud/hud-user-income-limits-api/)
- [HUD User CHAS API](https://apis.io/apis/hud/hud-user-chas-api/)
- [HUD Housing Counselor Search API](https://apis.io/apis/hud/hud-housing-counselor-search-api/)
- [HUD - US Department of Housing and Urban Development CHAS API](https://apis.io/apis/hud/hud-chas-api/)
- [HUD - US Department of Housing and Urban Development Fair Market Rents API](https://apis.io/apis/hud/hud-fair-market-rents-api/)
- [HUD - US Department of Housing and Urban Development Housing Counseling API](https://apis.io/apis/hud/hud-housing-counseling-api/)
- [HUD - US Department of Housing and Urban Development Income Limits API](https://apis.io/apis/hud/hud-income-limits-api/)
- [HUD - US Department of Housing and Urban Development ZIP Code Crosswalk API](https://apis.io/apis/hud/hud-zip-code-crosswalk-api/)

## Tags

ZIP Code, Crosswalk, Geography, Census

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