Colorado · FIPS 08117 · County seat: Breckenridge
Summit County, CO GIS & Parcel Viewer
Use this page to reach the official county parcel map for Summit County, Colorado. The button below opens the Summit County ArcGIS parcel map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Summit County parcel map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Summit County at a glance
| Official map | Summit County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Breckenridge |
| Population | 30,465 (2023 Census Bureau estimate) |
| Land area | 608 sq mi |
| FIPS code | 08117 |
Who runs this map
Summit 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 Summit County viewer
- Press the button above; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
About Summit County
Summit County had an estimated 30,465 residents in 2023, according to the Census Bureau. With about 608 square miles of land, that works out to roughly 50 people per square mile. Among Colorado's 64 counties, it is the 19th largest by population. Its county seat is Breckenridge.
Counties next to Summit County
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Summit County:
Our longer 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.