Douglas County, CO parcel and infrastructure data API

Parcel coverage in Douglas County

About 160,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from June 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:

Owner name and mailing address are returned by /v1/enrich with the owner group, at 2 credits per parcel instead of 1 credit. 99% of Douglas County records carry an owner name.

Infrastructure in and around Douglas County

Example requests for Douglas 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 6399 STABLE VIEW STREET, CASTLE PINES, 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":"6399 STABLE VIEW STREET, CASTLE PINES, CO","sections":["datacenters"]}' \
  https://api.korzy.co/v1/lookup

import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "6399 STABLE VIEW STREET, CASTLE PINES, 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"])

{
  "location": {
    "longitude": -104.85822565000001,
    "latitude": 39.4553237,
    "address": "6399 STABLE VIEW ST, CASTLE PINES",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "08035-8591c14c7c5ec8306e55",
        "korzy_id": "08035-8591c14c7c5ec8306e55",
        "parcelid": "235111303008",
        "parceladdr": "6399 STABLE VIEW ST",
        "parcelcity": "CASTLE PINES",
        "situs_zip": "80108",
        "statefp": "08",
        "geoid": "08035",
        "longitude": -104.85822565000001,
        "latitude": 39.4553237,
        "usedesc": "Residential",
        "taxacres": 0.141,
        "totalvalue": 73610,
        "assessed_value_usd": 67650,
        "market_value_usd": 1082453,
        "saledate": "2022-05-25",
        "saleamt": 777983,
        "updated": "2026-04-21"
      }
    ],
    "truncated": false
  },
  "sections": {
    "datacenters": {
      "status": "ok",
      "data": {
        "radius_km": 10,
        "truncated": false,
        "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 08035-8591c14c7c5ec8306e55, 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":"08035-8591c14c7c5ec8306e55"}],"fields":["identity","sale","owner"]}' \
  https://api.korzy.co/v1/enrich

3. 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/08035-8591c14c7c5ec8306e55

const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("08035-8591c14c7c5ec8306e55")}`, {
  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);

Douglas County data questions

How many parcels in Douglas County include last sale?

About 1,600 of about 160,000 parcel records (1%) include last sale.

Does the Korzy API return owner names for Douglas County parcels?

Yes. 99% of Douglas 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 Douglas County?

Korzy tracks 7 data-center projects in Douglas County: 5 operating, 1 under construction and 1 status not reported. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.

How much power generation is in Douglas County?

2 operable power plants in Douglas County total 4 MW of nameplate capacity, mainly hydro.

Which water systems serve Douglas County?

Service areas of about 40 community water systems cover about 23% of Douglas County, and sewer service areas cover about 29%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

More featured counties

• Arapahoe County, COBorders Douglas County · about 230,000 parcels
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