County · code 08097
Pitkin CountyColorado
Pitkin County is a county in Colorado with its seat in Aspen, formed in 1881.
- Founded1881
- County seatAspen
- Named forFrederick Walker Pitkin
- Land area971 sq mi + 2.5 sq mi water
- Population17,358 2020 Census
- Parcels mapped20,252 checked 16 October 2026
Where it is
Pitkin 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 1881 from Gunnison County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Pitkin County was created from Gunnison County on February 23, 1881, and named after Frederick Walker Pitkin.
- 1881Pitkin County created Pitkin created from Gunnison. · Colo. Laws 1881, 3d sess., pp. 89-92
- 1907Changed Legislature authorized Pitkin to gain from Gunnison, dependent on local referendum; change did not take effect. · Colo. Laws 1907, 16th sess., ch. 143, pp. 317-318
Land and parcels
What the maps cover in Pitkin
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 20,252 parcels from Pitkin County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 23 September 2026 · checked 16 October 2026 -
Address points Missing
No public address points layer found for Pitkin 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
Pitkin 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
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
Inside a city or town, permits usually come from that city rather than the county.
Permits
County government
- County government
The official website of Pitkin County.
See your own lot on these maps
Open Pitkin 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 Pitkin County
- When was Pitkin County founded?
- Pitkin County was founded in 1881, formed from Gunnison County, and named after Frederick Walker Pitkin.
- What is the county seat of Pitkin County?
- The county seat of Pitkin County is Aspen.
- Is there an online parcel map for Pitkin County?
- Yes. Pitkin County publishes a parcel map of 20,252 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Pitkin County's boundary or name changed?
- Pitkin County was created in 1881 from Gunnison County. Since then the Atlas of Historical County Boundaries records 1 later change, most of them small boundary adjustments, chiefly involving Gunnison County.
- Who issues building permits in Pitkin County?
- The county's page on building permits: Permits. Inside a city or town, ask that city first.
- Is my lot in a flood zone?
- We do not have flood maps for Pitkin County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby