Colorado · FIPS 08059 · County seat: Golden
Jefferson County, CO GIS & Parcel Viewer
Parcel lookups for Jefferson County start at the Jefferson County parcel map. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Jefferson County parcel map ↗
Opens gis.jeffco.us in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Jefferson County parcel map |
|---|---|
| Type | County-run map |
| Website | gis.jeffco.us |
| Access | Free, no login (checked Oct 2026) |
| County seat | Golden |
| Population | 576,366 (2023 Census Bureau estimate) |
| Land area | 764 sq mi |
| FIPS code | 08059 |
Where the parcel data comes from
Jefferson County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. As of our October 2026 test, anyone could open it without signing in or paying.
How to use the Jefferson County viewer
- Press the button above to open the county's own web map.
- Search for the property or pan and zoom to it.
- Click the lot to bring up what the county publishes about it.
- Look for print or measure tools if you need a quick map or rough size.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
The county in brief
Jefferson County had an estimated 576,366 residents in 2023, according to the Census Bureau. With about 764 square miles of land, that works out to roughly 754 people per square mile. That makes it number 4 out of 64 Colorado counties by population. Its county seat is Golden.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Jefferson County:
- Adams County
- Arapahoe County
- Boulder County
- Broomfield County
- Clear Creek County
- Denver County
- Douglas County
- Gilpin County
- Park County
- Teller County
Related guides
A note on accuracy
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.