Interactive Web Maps

Welcome to the Jefferson County interactive web map gallery. To open a map, select from any of the applications below.

jMap
jMap web map thumbnail

Locations and information about Jefferson County properties, streets, addresses, hazards and open space.

ASPIN
ASPIN web map thumbnail

Locations and information about properties and parcels.

Crash
Crash web map thumbnail

Locations and information about vehicle crashes.

GIS data can be downloaded from the Jefferson County ESRI Open Data website.
Standard maps in PDF format can be downloaded from Maps of Jefferson County.
You can contact the Jefferson County IT Services GIS team at GIS@jeffco.us or (303) 271-8887 M-F 7:30 – 4:30.