US Federal Districts Map
An interactive civics map of how the federal government divides the country, with an address search that lists every federal district you live in.
- Status
- active
- Role
- Sole developer
- Period
- 2025–present
- Stack
- JavaScript · Leaflet · Python · GeoPandas
- Links
- Live siteRepository
The question. The federal government divides the country differently for almost every function: judicial circuits, Federal Reserve districts, FEMA regions, Coast Guard districts, and more. Which of those districts does a given address sit in?
What I built. An interactive web map for civics education.
- District systems: 15 of them across the judicial, executive, and military branches, from the 12 courts of appeals circuits and 94 district courts to 220 Bureau of Land Management units.
- Address search: search an address (geocoded through OpenStreetMap’s Nominatim) or use your location, and the map lists every district that contains it, grouped by branch.
- Printable report: print a “your federal government” report of those districts.
- Shareable views: the URL carries the current view.
- Context: each region links to its official page and explains what it is for.
How it works. No backend, no framework, no build step.
- Front end: plain JavaScript and Leaflet, with each layer loaded only when it is turned on.
- Data: Python scripts using GeoPandas prepare and simplify the boundaries.
- Court districts: I built the district courts and US Attorney districts from Census county boundaries and the county lists in 28 U.S.C. §§ 81–131.
Status. First built in October 2025 and extended in October 2026. The source is public.