County Maps US

Pitkin County, Colorado

A county in Colorado, ranked 31 of 64 by population.

CountyFIPS 08097

Within Colorado
Pitkin County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Aspen, the county seat, located via the 2025 Census Gazetteer.

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Population
16,625
-738 (-4.3%) since 2020
Land area
970.7
square miles. A further 0.3% of the total area is water
Population density
17.1
people per square mile, computed rather than published
County seat
Aspen
Seat of county government.
Established
1881
144 years ago
Largest city
Aspen city
Population 6,489.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Pitkin County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Pitkin County, Colorado from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 430 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Pitkin County ranks

Position among the 64 counties of Colorado, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn ColoradoNationally
Population16,62531st of 642,000th of 3,144
Land area970.7 sq mi44th of 64720th of 3,144
Population density17.1 per sq mi27th of 642,326th of 3,144
Median household income$102,64510th of 64149th of 3,143

Full data for Pitkin County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population16,625Vintage 2025 Population Estimates
Population in 202017,363Vintage 2025 Population Estimates
2020 estimates base?17,362Vintage 2025 Population Estimates
Land area970.7 sq mi2025 Gazetteer Files
Water area2.5 sq mi2025 Gazetteer Files
Total area973.2 sq mi2025 Gazetteer Files
Population density?17.1 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$102,645American Community Survey 2020-2024 5-Year Estimates
Median home value$1,139,100American Community Survey 2020-2024 5-Year Estimates
Median age47.2American Community Survey 2020-2024 5-Year Estimates
Households9,215American Community Survey 2020-2024 5-Year Estimates
Housing units13,412American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+49
123 births, 74 deaths
Net migration
-193
More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Pitkin County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Gunnison CountyColorado68 mi17,439
Eagle CountyColorado37 mi54,291
Lake CountyColorado32 mi7,552
Garfield CountyColorado17 mi63,474
Mesa CountyColorado14 mi162,845
Chaffee CountyColorado5.2 mi20,831

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 64 counties of Colorado

Open the interactive Colorado county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.