Circles and driving areas on US ZIP maps
The Radial Circles and Distance/Time tools also work on individual and combined US 5-digit ZIP maps. Choose straight-line circles for an approximate radius, or driving areas when roads and travel time matter.
Add a straight-line radius
Open Radial Circles, place the centre on the map, then choose the number of rings and miles between them. The US ZIP map uses a state-aware scale, including combinations; treat the circles as approximate distances, not exact driving routes. You can colour whole ZIP areas within them if useful.
Build a road-travel area
Open Distance/Time, search for a starting place or click the map to put down a flag. Choose miles or driving minutes, set the limit and bands, then press Create. This uses the road network and needs active access; it is different from drawing radial circles.
Colour ZIPs from coverage
The coverage-colouring buttons can assign whole ZIP polygons using their centres. A ZIP touching the edge is not automatically included if its centre is outside. Choose Add to existing to keep other territory colours, or Replace colouring only when you want to start over.