Colorado · FIPS 08111 · County seat: Silverton
San Juan County, CO GIS & Parcel Viewer
Use this page to reach the official county parcel map for San Juan County, Colorado. The button below opens San Juan County Public GIS Data Web App in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the San Juan County parcel map ↗
Opens sjco.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
San Juan County at a glance
| Official map | San Juan County Public GIS Data Web App |
|---|---|
| Type | County-run map |
| Website | sjco.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Silverton |
| Population | 802 (2023 Census Bureau estimate) |
| Land area | 388 sq mi |
| FIPS code | 08111 |
About the official source
It is a county-level map: San Juan County or the company it hires keeps the parcel layer up to date. As of our October 2026 test, anyone could open it without signing in or paying.
Finding a property on this map
- Click the button above and wait for the Web AppBuilder viewer to load. Some counties show a terms screen first.
- Search by street address, owner or parcel ID if the search box offers those options.
- Click a lot on the map to read its attributes.
- Turn on aerial imagery from the basemap tool and use the layer list to add things like zoning or flood zones when they're published.
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.
San Juan County by the numbers
Census Bureau figures put San Juan County at about 802 people (2023 estimate) on roughly 388 square miles of land, which is about 2.1 residents per square mile. That makes it number 63 out of 64 Colorado counties by population. Its county seat is Silverton.
Neighboring counties
San Juan County shares a border with the counties below. Each link has its own official map:
- Dolores County (state list)
- Hinsdale County
- La Plata County
- Montezuma County
- Ouray County
- San Miguel County
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.