Arapahoe County, CO parcel and infrastructure data API
Korzy has about 230,000 parcel records for Arapahoe County, Colorado, with source updates through April 2026. Nearly every record carries owner names, values, last sale and land use; 90% include year built and 90% include building size. In and around the county the API also maps about 15 data-center projects (5 operating and 1 under construction); about 15 power plants with about 150 MW of capacity, led by solar; and about 40 miles of active rail. Look up any parcel by address or coordinates, then check nearby data-center projects, utilities and grid context at the same point.
Parcel coverage in Arapahoe County
About 230,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from April 2026. Each record has a stable korzy_id you can store and look up again with /v1/records/{id}. Share of records with each field:
| Field | Coverage | Share |
|---|---|---|
| Situs address | Most · 93% | |
| Owner name | Nearly all · 97% | |
| Assessed or market value | Nearly all · 99% | |
| Year built | Most · 90% | |
| Building size | Most · 90% | |
| Last sale | Nearly all · 99% | |
| Land use | Nearly all · 98% | |
| Zoning | Not published |
Owner name and mailing address are returned by /v1/enrich with the owner group, at 2 credits per parcel instead of 1 credit. 97% of Arapahoe County records carry an owner name.
Infrastructure in and around Arapahoe County
Power plants
About 15 operable plants with about 150 MW of nameplate capacity; largest by capacity: solar, other fuels. Proposed generators add about 180 MW.
Within 50 km: /v1/lookup section power; details: /v1/records/{id}
Substations and transmission
About 25 in-service substations, about 15 rated 230 kV or higher.
About 390 miles of transmission lines: about 30 mi at under 100 kV; about 95 mi at 100–161 kV; about 210 mi at 220–287 kV; about 60 mi at 345 kV.
Water and sewer service
Service areas of about 45 community water systems cover about 23% of the county.
Sewer service areas of about 15 systems cover about 18%.
At an address or point: /v1/lookup section utilities
Data-center projects
About 15 tracked projects: 5 operating, 1 under construction, 7 status not reported. Reported operating capacity: about 40 MW. Reported planned capacity: about 180 MW.
Within 10 km: /v1/lookup section datacenters
Flood zones and wetlands
Special flood hazard areas cover about 6% of the county on the current federal flood maps, published October 2026.
Mapped wetlands cover about 1%.
At an address or point: /v1/lookup section environment
Rail, ports and freight
- About 40 miles of active rail, about 35 of it main line
- About 50 miles of national freight network highway
Within 25 km: /v1/lookup section logistics
Example requests for Arapahoe County
The lookup response is a real production response, trimmed to the main fields. Every request needs an API key with api:read; see authentication and credits and limits.
1. Find a parcel and nearby data-center projects
/v1/lookup matches 13731 E RICE PL, AURORA, CO and returns the parcel's korzy_id and record, plus the data-center projects within 10 km, nearest first. 2 credits.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"address":"13731 E RICE PL, AURORA, CO","sections":["datacenters"]}' \
https://api.korzy.co/v1/lookupPython
import os
import requests
response = requests.post(
"https://api.korzy.co/v1/lookup",
json={"address": "13731 E RICE PL, AURORA, CO", "sections": ["datacenters"]},
headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
timeout=60,
)
response.raise_for_status()
body = response.json()
parcel = body["parcels"]["records"][0]
print(parcel["korzy_id"], body["sections"]["datacenters"]["status"])Production response (trimmed)
{
"location": {
"longitude": -104.82714952645722,
"latitude": 39.63691885,
"address": "13731 E RICE PL, AURORA",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "08005-1c97b86944f0226879ff",
"korzy_id": "08005-1c97b86944f0226879ff",
"parcelid": "034030506",
"parceladdr": "13731 E RICE PL",
"parcelcity": "AURORA",
"situs_zip": "80015-1063",
"statefp": "08",
"geoid": "08005",
"longitude": -104.82714952645722,
"latitude": 39.63691885,
"usedesc": "Offices",
"yearbuilt": 1984,
"bldgsqft": 9873,
"taxacres": 0.7143465191375115,
"totalvalue": 1234125,
"assessed_value_usd": 333214,
"market_value_usd": 1234125,
"saledate": "2016-10-07",
"saleamt": 760000,
"updated": "2026-04-23"
}
],
"truncated": false
},
"sections": {
"datacenters": {
"status": "ok",
"data": {
"radius_km": 10,
"projects": [
{
"id": "datacenter:dc_9027933643f2225eb86d",
"project_id": "dc_9027933643f2225eb86d",
"name": "Flexential Denver - Aurora (DEN03)",
"operator": "Flexential",
"status": "operating",
"state": "CO",
"city": "Aurora",
"address": "11900 East Cornell Avenue",
"longitude": -104.8488321,
"latitude": 39.6610488,
"location_precision": "exact",
"source_count": 3,
"source_date": "2026-07-23",
"mapped": true,
"distance_km": 3.2627254441405618
},
{
"id": "datacenter:dc_83c35fe4b054c6cab2a8",
"project_id": "dc_83c35fe4b054c6cab2a8",
"name": "Flexential Denver - Centennial (DEN05)",
"operator": "Flexential",
"status": "operating",
"state": "CO",
"city": "Centennial",
"address": "12500 East Arapahoe Road",
"longitude": -104.8431597,
"latitude": 39.5938733,
"location_precision": "exact",
"source_count": 3,
"source_date": "2026-07-23",
"mapped": true,
"distance_km": 4.979044326468905
},
{
"id": "datacenter:dc_9c43fefc7d92a6f67031",
"project_id": "dc_9c43fefc7d92a6f67031",
"name": "Time Warner Datacenter",
"status": "unknown",
"state": "CO",
"city": "Centennial",
"address": "11011 East Peakview Avenue",
"longitude": -104.86037845845402,
"latitude": 39.59884075,
"location_precision": "footprint",
"source_count": 2,
"source_date": "2026-02-09",
"mapped": true,
"distance_km": 5.10182338108418
}
],
"truncated": true,
"note": "Straight-line distance to the reported project point; inspect location_precision. Projects merge supported source matches, not every nearby building. Approximate locations do not identify a parcel. Reported IT load, facility power, planned capacity and estimates remain separate source claims. No record or unknown status does not establish absence or inactivity."
},
"provenance": [
{
"dataset": "datacenters",
"as_of": "2026-11-02",
"data_version": "20261102T123021962884Z"
}
]
}
},
"credits": {
"charged": 2,
"refunded": 0
}
}2. Add owner and sale fields
/v1/enrich returns the fields you choose for up to 25 parcels per request; here the parcel 08005-1c97b86944f0226879ff, with the owner group. 2 credits.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"items":[{"korzy_id":"08005-1c97b86944f0226879ff"}],"fields":["identity","sale","owner"]}' \
https://api.korzy.co/v1/enrich3. Fetch the record again by ID
/v1/records/{id} returns the stored parcel's full record, without owner fields. 1 credit.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
https://api.korzy.co/v1/records/08005-1c97b86944f0226879ffJavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("08005-1c97b86944f0226879ff")}`, {
headers: { Authorization: `Bearer ${process.env.KORZY_API_KEY}` },
});
if (!response.ok) throw new Error(`Korzy API ${response.status}`);
const { record } = await response.json();
console.log(record.parceladdr, record.usedesc);Arapahoe County data questions
- How many parcels in Arapahoe County include year built?
- About 210,000 of about 230,000 parcel records (90%) include year built.
- Does the Korzy API return owner names for Arapahoe County parcels?
- Yes. 97% of Arapahoe County parcel records carry an owner name. Ask /v1/enrich for the owner group; each parcel then costs 2 credits instead of 1 credit. Lookups and records never include owner fields.
- How many data-center projects are in Arapahoe County?
- Korzy tracks about 15 data-center projects in Arapahoe County: 7 status not reported, 5 operating and 1 under construction. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.
- How much power generation is in Arapahoe County?
- About 15 operable power plants in Arapahoe County total about 150 MW of nameplate capacity, mainly solar and other fuels.
- Which water systems serve Arapahoe County?
- Service areas of about 45 community water systems cover about 23% of Arapahoe County, and sewer service areas cover about 18%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.
More featured counties
- Adams County, COBorders Arapahoe County · about 190,000 parcels
- Denver County, COBorders Arapahoe County · about 240,000 parcels
- Douglas County, COBorders Arapahoe County · about 160,000 parcels
- Jefferson County, COBorders Arapahoe County · about 260,000 parcels
Build on Arapahoe County parcel data
Lookups, enrichment and records work the same in every county Korzy covers. Credits are shared across parcels, utilities, environment, logistics, power, grid, data-center and terrain sections.