Arapahoe County, CO parcel and infrastructure data API

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 /api/parcel-record. Share of records with each field:

Owner name and mailing address are returned with include_owner=true, which doubles a request's cost: a parcel record costs 2 credits instead of 1. 97% of Arapahoe County records carry an owner name.

Infrastructure in and around Arapahoe County

Example requests for Arapahoe County

Real responses from the production API, trimmed to the main fields. Every request needs an API key with api:read; see authentication and credits and limits.

1. Find a parcel by address

/api/search matches 14500 E CRESTLINE DR, AURORA, CO and returns the parcel's korzy_id, coordinates and record. 1 credit.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'q=14500 E CRESTLINE DR, AURORA, CO' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "14500 E CRESTLINE DR, AURORA, CO"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
parcel = response.json()["results"][0]
print(parcel["korzy_id"], parcel["longitude"], parcel["latitude"])

{
  "results": [
    {
      "korzy_id": "08005-07114b12b1c1fde65d71",
      "address": "14500 E CRESTLINE DR",
      "city": "AURORA",
      "postcode": "80015",
      "county": "Arapahoe",
      "statefp": "08",
      "longitude": -104.81930442627096,
      "latitude": 39.619440850000004,
      "match_type": "exact",
      "parcelid": "034471146",
      "parceladdr": "14500 E CRESTLINE DR",
      "parcelcity": "AURORA",
      "situs_zip": "80015",
      "usedesc": "Warehouse/Storage",
      "yearbuilt": 2019,
      "bldgsqft": 106245,
      "taxacres": 2.3963373904614325,
      "totalvalue": 9338700,
      "assessed_value_usd": 2521449,
      "market_value_usd": 9338700,
      "saledate": "2020-01-31",
      "saleamt": 9628025,
      "updated": "2026-04-23",
      "geoid": "08005"
    }
  ],
  "truncated": false
}

With include_owner=true (2 credits) the record adds owner fields, shown here as placeholders:

{
  "owner_name": "EXAMPLE HOLDINGS LLC",
  "owner_mailing_address": "100 EXAMPLE ST, SAMPLE CITY, ST 00000"
}

2. Look up the parcel at a point

/api/query/point returns every parcel whose boundary covers the coordinates; here it returns the same record, 08005-07114b12b1c1fde65d71, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-104.819304' \
  --data-urlencode 'latitude=39.619441' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-104.819304", "latitude": "39.619441", "limit": "5"});
const response = await fetch(`https://api.korzy.co/api/query/point?${params}`, {
  headers: { Authorization: `Bearer ${process.env.KORZY_API_KEY}` },
});
if (!response.ok) throw new Error(`Korzy API ${response.status}`);
const { records } = await response.json();
console.log(records.map((record) => record.korzy_id));

3. Check nearby data-center projects

/api/datacenters/context lists data-center projects within 10 km of the point, nearest first. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-104.819304' \
  --data-urlencode 'latitude=39.619441' \
  --data-urlencode 'radius_km=10' \
  --data-urlencode 'limit=3' \
  https://api.korzy.co/api/datacenters/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/datacenters/context",
    params={"longitude": "-104.819304", "latitude": "39.619441", "radius_km": "10", "limit": "3"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
for project in response.json()["projects"]:
    print(project["name"], project["status"], project["distance_km"])

{
  "projects": [
    {
      "project_id": "dc_83c35fe4b054c6cab2a8",
      "name": "Flexential Denver - Centennial (DEN05)",
      "operator": "Flexential",
      "status": "operating",
      "city": "Centennial",
      "state": "CO",
      "longitude": -104.8431597,
      "latitude": 39.5938733,
      "location_precision": "exact",
      "distance_km": 3.5013357749285863
    },
    {
      "project_id": "dc_9dc1fcfddfc152d3c566",
      "name": "Xfinity/Comcast Data Center",
      "status": "unknown",
      "city": "Centennial",
      "state": "CO",
      "longitude": -104.83241962513185,
      "latitude": 39.58833975,
      "location_precision": "footprint",
      "distance_km": 3.6362707569549904
    },
    {
      "project_id": "dc_e5c3808343151e398379",
      "name": "zColo by Zayo",
      "status": "unknown",
      "city": "Centennial",
      "state": "CO",
      "longitude": -104.8470456908424,
      "latitude": 39.591322,
      "location_precision": "footprint",
      "distance_km": 3.9274258035822793
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

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. Add include_owner=true to a point, search or parcel-record request; it doubles the request's cost, so a single parcel record costs 2 credits.

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. /api/datacenters/context lists projects within 10 km of any 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%. /api/utilities/context returns the water and sewer matches at a point.

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