Aspen, CO land: flood and parcels
7,030 parcels
3.6% of Aspen’s 7,030 parcels are in a FEMA flood zone.
County roll 2026 · Map data Oct 26, 2026
- Acres on the roll2,162
- In a FEMA flood zone3.6%special flood hazard area
Colorado 2026 taxes: bills go out in January 2027; first half due March 1, 2027, second half June 15, 2027.
Free account: 25 parcel cards a day on the map, with watches and a saved search. Get started free
Our map has no zoning layer for Aspen yet. Ask the city's or Pitkin County's planning office which zoning applies to a parcel.
Around Aspen
Parcels to start with
Flood zones and wetlands
Home value trend in Pitkin County
Home values in Pitkin County rose about 66% over 5 years and fell about 5% in the last year (FHFA, 2025).
Development in Aspen
About 16 acres inside Aspen's limits turned from farmland, forest or other open land into developed land in 2020–2025 (0.6% of its land), and about 29 acres in 2015–2025.
Land in Aspen by useLand use on the county roll
| Land class | Parcels | Share |
|---|---|---|
| Building on record | 6,112 | 87% |
| Other or not coded | 663 | 9.4% |
| Institutional | 252 | 3.6% |
| Farm and timber | 3 | under 0.1% |
3 farm and timber parcels cover 37 acres. County tax roll 2026 (county file Sep 2026); land class read from the roll's land-use and building fields.
Typical lot sizeThe typical lot, from the roll
The median parcel in Aspen is 0.02 acre (7,029 parcels with a size).
Acres from the county roll, or from the parcel's own outline where the roll's figure is off by more than three times. Condominium units that share one point (each carrying the whole complex's acres) are left out of the lot sizes.
Land parcels in AspenFarm and timber parcels to start with
Farm and timber parcels of an acre or more, each with its own page of public roll facts.
Nearby townsTowns around it
Questions about Aspen landAnswers from the public records
How many parcels are in Aspen, CO?
7,030 parcels on the 2026 Pitkin County tax roll (county file Sep 2026) inside the Census Bureau's boundary for Aspen, which can differ from its own limits at the edges, covering 2,162 acres.
How much vacant land is in Aspen, CO?
Pitkin County's vacant-land class failed our aerial check (10 of 24 sampled lots were in use or doubtful: a home on a creek strip, a storage yard, a ski run, buildings going up), so we don't call any parcel here vacant land.
What is the typical lot size in Aspen?
The median parcel is 0.02 acre, from 7,029 parcels with a recorded size.
How much of Aspen is in a flood zone?
3.6% of parcels are in a FEMA special flood hazard area (National Flood Hazard Layer, as of Oct 2026). Check each parcel's own flood line before you buy.
Are there wetlands in Aspen?
1.6% of parcels are a quarter or more wetland on the USFWS National Wetlands Inventory, a mapping guide, not a legal delineation.
What is Aspen zoned?
Our map has no zoning layer for Aspen yet. Ask the city's or Pitkin County's planning office which zoning applies to a parcel.
Are there land prices for Aspen?
No land-price range is shown for Aspen yet. We print no land-price range for Pitkin County yet.
Where does this data come from?
Parcels: State of Colorado public parcels (OIT) and county assessor layers. Flood: FEMA National Flood Hazard Layer. Wetlands: USFWS National Wetlands Inventory. Towns: U.S. Census places. Every figure is counted from those files on our map.
More in Pitkin CountyIts other towns
Sources & methodSources, dates and how these figures are built
Headline figures: source and date
Acres on the roll: County tax roll, 2026 roll, counted on our map built Oct 26, 2026.
In a FEMA flood zone: FEMA National Flood Hazard Layer, as of Oct 10, 2026; counted on our map built Oct 26, 2026.
Property tax due dates
Colorado Revised Statutes 39-10-104.5, 39-5-122 and 39-8-106. Checked Oct 13, 2026.
Flood zones and wetlands: source and date
FEMA flood zone (A or V): FEMA National Flood Hazard Layer, as of Oct 10, 2026; counted on our map built Oct 26, 2026.
Parcels at least 25% wetland: USFWS National Wetlands Inventory, as of Oct 1, 2026; counted on our map built Oct 26, 2026.
Home value trend in Pitkin County
This tracks home values, not land values. Land buyers read it as a sign of demand nearby: where homes gain value, builders and buyers follow. A vacant lot can move differently.
How: the change in FHFA's annual county index from 2020 and 2024 to 2025, rounded. The index follows repeat sales and refinance appraisals of the same single-family homes with Fannie Mae or Freddie Mac mortgages. It is in today's dollars, not adjusted for inflation, and FHFA calls these local indexes developmental. Where FHFA's sample is too small it publishes no figure, and none prints here.
Source: FHFA House Price Index, all-transactions, annual county index, 2025, last updated March 31, 2026. Method: Bogin, Doerner and Larson, “Local House Price Dynamics: New Indices and Stylized Facts”, FHFA Working Paper 16-01.
FHFA publishes no index for Aspen itself; this is Pitkin County's, which includes it.
Development in Aspen
Counted inside the Census place boundary of Aspen city. Counted from USGS Annual NLCD land cover (2015, 2020 and 2025; 30 m squares on a 240 m grid, so edges are approximate). A square counts when it was forest, shrub, grassland, pasture, cropland or wetland in the start year and developed in 2025 (NLCD's developed classes, from lawns and roads to dense buildings). A satellite land-cover map misses some changes and mislabels a few; read it as a guide.
Source: USGS Annual NLCD Collection 1.2, public domain, DOI 10.5066/P94UXNTS.
Land sale prices
We hold this county's recorded deeds, but its file does not mark which sales are arm's-length land sales, so this page prints no land price range yet.
Sources
Parcels: State of Colorado public parcels (OIT) and county assessor layers (2026 roll, county file Sep 2026); flood: FEMA National Flood Hazard Layer (as of Oct 2026); wetlands: USFWS National Wetlands Inventory (as of Oct 2026); town limits: U.S. Census Bureau TIGER/Line places; sales: the county's own file, through Aug 2026; counted on our map built Oct 2026.