Privacy Policy for RadiusMap

Updated: November 13, 2026

RadiusMap is a free radius mapping tool at radiusmap.org. This page explains how data is used by the current workspace.

Your circles and downloads

Circle names, coordinates, radii, colors and the selected distance unit are saved in your browser's local storage when available. You can reset the workspace or clear this site's browser storage. Geometry calculations and map, circle and ZIP exports are generated in your browser; city CSV is generated by our server from the bundled city dataset. We do not provide accounts or a server-side map library.

Search, maps, city and ZIP queries

Address and postal-code searches pass through our server to Photon, which uses OpenStreetMap data. Your search text is sent to this service. We cache search results to reduce repeated requests.

Map tiles are loaded directly from OpenStreetMap's tile servers, or a map provider configured by the site operator. A tile request reveals your IP address and the map region being viewed to the provider. When you request ZIP coverage, your selected circle's coordinates and radius pass through our server to the US Census Bureau's TIGERweb service. Query results may be cached.

City results and city CSV requests send the selected circle's coordinates and radius to our server. We match them against a bundled GeoNames dataset; these queries are not forwarded to GeoNames. Responses may be cached. Optional ZIP boundary requests send the same query area through our server to TIGERweb.

“My location” asks your browser for permission to use your device location. The coordinates become a circle center and may be included in a ZIP query, map view or share link. You can use search or click the map without enabling location access.

Sharing a map

Share links contain circle names, center coordinates, radii and colors in the URL fragment. The fragment is read by the browser; it is not part of the normal page request to our server. Anyone who receives the link can see the encoded locations. Third-party mapping and ZIP requests still occur when the shared map opens. Do not share a link containing locations you want to keep private.

Hosting and optional analytics

Our hosting provider may process IP addresses and technical request logs to deliver and protect the service. If enabled by the operator, Google Analytics or Microsoft Clarity may process usage information under their own policies. Custom RadiusMap analytics events include actions such as adding a circle, exporting a format and spending 60 visible seconds on the site. These events do not include search text, coordinates, ZIP lists or encoded share links. Analytics identifiers are not included in the default project configuration.

Contact

For privacy questions, email support@radiusmap.org.