Explore Property Boundaries Across the United States

Access comprehensive cadastral data including state boundaries, county boundaries, and individual property parcels through our powerful API. Visualize data at any zoom level.

What’s new

Our API now runs on upgraded infrastructure for faster, more reliable responses. Parcel datasets are being refreshed state by state—see below for the latest coverage updates.

Recent updates

Faster infrastructure and rolling parcel data refreshes.

Infrastructure

New servers improve latency and throughput across endpoints.

Parcel data

Recently refreshed states — more coming soon.

    List expands as updates ship.

    Zoom Level: 5 Showing: States

    API Features

    State Boundaries

    Get all US state boundaries with a single API call

    County Boundaries

    Retrieve county-level cadastral data for any state

    Property Parcels

    Access detailed property boundaries within a specified radius

    Coordinate-Based

    Query by latitude and longitude coordinates

    API Endpoints

    Every Property Lines endpoint is published on RapidAPI. Use RapidAPI for signup, subscription plans, your API key, interactive docs, and to send real requests. Browse the full API here: Property Lines on RapidAPI.

    GET /api/get_all_us_state_boundaries

    Returns all US state boundaries

    GET /api/get_us_state_boundary?state={state}

    Returns boundary for a specific state

    GET /api/get_us_county_boundary?state={state}&county={county}

    Returns boundary for a specific county

    GET /api/get_us_radius_property_boundaries?radius={radius}&coords={lat,lng}

    Returns property boundaries within radius of coordinates