County · code 08111
San Juan CountyColorado
San Juan County is a county in Colorado with its seat in Silverton, formed in 1876.
- Founded1876
- County seatSilverton
- Named forJohn the Apostle
- Land area388 sq mi + 0.8 sq mi water
- Population705 2020 Census
- Parcels mapped2,781 checked 16 October 2026
Where it is
San Juan on the map of Colorado
Colorado has 64 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1876 from Hinsdale County and La Plata County
An old deed may name a county that no longer exists, or a boundary that has since moved.
San Juan County was created by the Colorado Territory on May 1, 1876, from parts of Hinsdale and La Plata counties. The county was named after John the Apostle. In 1877, San Juan County lost territory to the creation of Ouray County.
- 1876San Juan County created San Juan created by Colorado Territory from Hinsdale and La Plata. Act passed 31 January 1876; took effect 1 May 1876. · Colo. Terr. Laws 1876, 11th sess., secs. 1, 9, 12/pp. 58-61
- 1877Lost territory San Juan lost to creation of Ouray. · Colo. Laws 1876, 1st sess., ch. 21, par. 385-392/pp. 207-209
Land and parcels
What the maps cover in San Juan
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 2,781 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Missing
No public address points layer found for San Juan County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
San Juan by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
San Juan County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of San Juan County.
See your own lot on these maps
Open San Juan County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about San Juan County
- When was San Juan County founded?
- San Juan County was founded in 1876, formed from Hinsdale County and La Plata County, and named after John the Apostle.
- What is the county seat of San Juan County?
- The county seat of San Juan County is Silverton.
- Is there an online parcel map for San Juan County?
- Yes. A public source publishes a parcel map of 2,781 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has San Juan County's boundary or name changed?
- San Juan County was created in 1876 from Hinsdale County and La Plata County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Ouray County.
- Is my lot in a flood zone?
- We do not have flood maps for San Juan County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby