Preformatted district maps satisfy many needs, but are limited in the amount of detail they can show.
With this viewer, one can interactively examine district boundaries, measure distances, search for addresses, cities, counties, and districts.
Note that districts are constructed using census geography.
Census geography matches up with census population figures, upon which district plans must be based.
This viewer overlays district boundaries on non-census base maps.
This approach provides a visually appealing environment with relatively quick response times, though features from different sources do not always align perfectly.
To resolve very specific boundary questions, it is often necessary to refer to the census base geography with which the districts were originally drawn.
Please note also that the address search function uses a commercial geocoding service. While locations returned are typically accurate, they should not be considered definitive, especially in rural areas.