# HUD - US Department of Housing and Urban Development ZIP Code Crosswalk API

**Canonical:** https://apis.io/apis/hud/hud-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/fmr  
**Documentation:** https://www.huduser.gov/portal/dataset/fmr-api.html

HUD - US Department of Housing and Urban Development 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, described by a machine-readable OpenAPI specification. Tagged areas include ZIP Code Crosswalk. The published artifact set on APIs.io includes an OpenAPI specification.

ZIP code to geographic area crosswalk queries

## Machine-readable artifacts (1)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/hud/refs/heads/main/openapi/hud-zip-code-crosswalk-api-openapi.yml

## 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 USPS ZIP Code Crosswalk API](https://apis.io/apis/hud/hud-user-usps-zip-code-crosswalk-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/)

## Tags

ZIP Code Crosswalk

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