Colorado location data
Isopleth answers questions about any coordinate or street address in Colorado with 351 public-data fields from 95 sources: flood and wildfire risk, soils and slope, the power grid, water and roads, climate, and county economics. Each value carries its source, license and vintage. Use it from the REST API or through the MCP server in Claude, ChatGPT, Cursor and other assistants.
Parcel coverage in Colorado
Parcel records: 2,599,937 parcels in 50 counties. Published by Colorado OIT GIS; contributing counties (44 of 64) (Public, attribution); Collected annually (dateReceived April 2026 for sampled counties), refreshed annual.
Share of parcels with each column filled: owner name 85%, site address 73%, total value 71%, land use 14%, sale date 53%, zoning 16%. Not published here: year built.
Sample values in Colorado
What our API returned at the Census Bureau's interior point of Colorado's 3 largest counties by land area, computed 2026-10-29. One point is not a whole county: values can change within a few hundred meters, so look up your own site. "No data" means the dataset has nothing at that point.
| field | Las Animas County | Moffat County | Weld County |
|---|---|---|---|
| Hazards | |||
| FEMA flood zone | X | no data | D |
| Inside a mapped floodplain | No | No | No |
| Wildfire, annual frequency | 0.0023 events a year | 0.0023 events a year | 0.0021 events a year |
| Tornado, annual frequency | 0.85 events a year | 0.13 events a year | 2.6 events a year |
| Hail, annual frequency | 2.1 events a year | 0.081 events a year | 6.6 events a year |
| Current drought category | D1 | D0 | D2 |
| On a mapped wetland | No | No | No |
| Nearest mapped wetland | 180 m | 55 m | 56 m |
| Land | |||
| Elevation | 1,598 m (5,241 ft) | 2,095 m (6,874 ft) | 1,452 m (4,765 ft) |
| Slope | 0.7° | 17.4° | 0.1° |
| Soil drainage | Well drained | Well drained | Well drained |
| Soil hydrologic group | C | D | B |
| Farmland class | Prime | Prime | Statewide importance |
| Land use | Other | Forest | Other |
| Crop or cover (CDL) | Grass/Pasture | Evergreen Forest | Grass/Pasture |
| Tree canopy | 0% | 1% | 0% |
| On protected land (PAD-US) | No | Yes | No |
| Surface manager | Private or unknown | Blm | Private or unknown |
| Climate & energy | |||
| Annual precipitation (normal) | 332 mm (13 in) | 358 mm (14 in) | 340 mm (13 in) |
| Days above 32 °C a year | 59 days | 9 days | 45 days |
| Solar resource (GHI) | 5.23 kWh/m²/day | 4.79 kWh/m²/day | 4.85 kWh/m²/day |
| Mean wind speed at 100 m | 6.1 m/s | 7.0 m/s | 5.8 m/s |
| Wind capacity factor | 25% | 26% | 27% |
| Infrastructure | |||
| Nearest substation (69 kV+) | 21.4 km (13.3 mi) | 50.4 km (31.3 mi) | 24.0 km (14.9 mi) |
| Nearest gas pipeline | 7.5 km (4.7 mi) | 11.0 km (6.8 mi) | 16.9 km (10.5 mi) |
| Electric utility | SAN ISABEL ELECTRIC ASSN, INC | YAMPA VALLEY ELECTRIC ASSN INC | POUDRE VALLEY REA, INC |
| In a public water service area | No | No | No |
| Depth to water, nearest monitored well | 39.2 m (129 ft) | no data | 6.7 m (22 ft) |
| Nearest major road | 17.3 km (10.8 mi) | 5.8 km (3.6 mi) | 844 m |
| Community | |||
| Nearest fire station | no data | no data | 9.9 km (6.2 mi) |
| Nearest school | 17.7 km (11.0 mi) | 15.3 km (9.5 mi) | 9.9 km (6.2 mi) |
| County median household income | $52,074 | no data | no data |
| County population growth, 1 year | -0.8% | no data | no data |
| County house prices, year over year | -6.7% | no data | no data |
| In an Opportunity Zone | Yes | No | No |
County pages
- Las Animas County 4,773 sq mi of land
- Moffat County 4,743 sq mi of land
- Weld County 3,985 sq mi of land
Datasets that returned data at these points
| source | fields |
|---|---|
BLM_SMA Bureau of Land Management | surface_management_agency |
CENSUS_ACS U.S. Census Bureau | county_median_household_income |
CENSUS_PEP U.S. Census Bureau | county_population_growth_1yr_pct |
EIA_ATLAS U.S. Energy Information Administration | nearest_gas_pipeline_distance_m |
EIA_POWER U.S. Energy Information Administration | electric_utility_service_territory, nearest_substation_distance_m |
EPA_CWS_SERVICE_AREAS U.S. Environmental Protection Agency | within_water_service_area |
FEMA_NFHL Federal Emergency Management Agency | nfhl_flood_zone, within_floodplain_polygon |
FEMA_NRI Federal Emergency Management Agency | hail_annual_frequency, tornado_annual_frequency, wildfire_annual_frequency |
FHFA_HPI Federal Housing Finance Agency | county_hpi_yoy_pct |
HUD_OPPORTUNITY_ZONES U.S. Department of Housing and Urban Development | in_opportunity_zone |
JRC_PVGIS_NSRDB See source_url | ghi_annual_kwh_m2_day |
NOAA_NCEI_NCLIMGRID_DAILY National Oceanic and Atmospheric Administration | days_above_32c_annual_count |
NOAA_NCEI_NORMALS_GRIDDED National Oceanic and Atmospheric Administration | annual_precipitation_normal_mm |
NREL_REV_LANDBASED_WIND_SC_2024 NREL reV supply curves, Open Energy Data Initiative (OEDI) | wind_capacity_factor_pct |
NREL_SOLAR_RESOURCE_V1 NREL Solar Resource Data (NSRDB) | ghi_annual_kwh_m2_day |
NREL_WIND_TOOLKIT NREL WIND Toolkit (Draxl et al., 2015) | mean_wind_speed_100m_ms |
OVERTURE_PLACES © Overture Maps Foundation | nearest_fire_station_distance_m, nearest_school_distance_m |
OVERTURE_TRANSPORTATION © Overture Maps Foundation, © OpenStreetMap contributors | nearest_major_road_distance_m |
PAD_US USGS Protected Areas Database of the United States (PAD-US) | intersects_protected_area |
USDA_CDL U.S. Department of Agriculture | cdl_class |
USDA_SSURGO U.S. Department of Agriculture | prime_farmland_classification, soil_drainage_class, soil_hydrologic_group |
USDM_CURRENT The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, and the National Oceanic and Atmospheric Administration. Map courtesy of NDMC. | drought_category |
USFS_LCMS USDA Forest Service | land_use_class |
USFS_NLCD_TCC USDA Forest Service | tree_canopy_pct |
USFWS_NWI U.S. Fish and Wildlife Service | intersects_wetland, nearest_wetland_distance_m |
USGS_3DEP_COG U.S. Geological Survey | elevation, slope_degrees |
USGS_NWIS_OGC U.S. Geological Survey | nearest_groundwater_well_depth_to_water_m |
These are only the sources behind the fields sampled here. The full list is on Sources & licenses and every field is in the field catalog.
What people use it for in Colorado
- Land buyers: screen a lot for flood zone, wetlands, slope, soils, road and water access before a site visit; search Colorado parcels by county, acreage or land use. Buyers who want it written up can order a $29 report on Check the Land, which is built on Isopleth.
- Solar, wind and data-center siting: distance to transmission and substations, solar and wind resource, protected land.
- Insurance and lending: hazard frequencies and floodplain status for every address in a book.
- Real estate and research: county income, growth and house-price trends next to on-the-ground facts.
See use cases for prompts and the exact fields.
Try it
curl https://api.isopleth.dev/v1/fetch -H "Authorization: Bearer $ISOPLETH_KEY" \
-H "Content-Type: application/json" \
-d '{"lat": 37.318831, "lng": -104.04411, "preset": "site_selection"}'
Or ask your assistant: “Using Isopleth, what are the flood zone, slope and soil drainage at 37.3188, -104.0441?”
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