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Adams County, CO parcel and infrastructure data API

Korzy has about 190,000 parcel records for Adams County, Colorado, with source updates through April 2026. Nearly every record carries owner names, values and land use; 92% include last sale. In and around the county the API also maps about 30 power plants with about 1,800 MW of capacity, led by natural gas; 2 data-center projects; and about 150 miles of active rail. Look up any parcel by address or coordinates, then check water, sewer and infrastructure context at the same point.

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Parcel coverage in Adams County

About 190,000 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:

FieldCoverageShare
Situs addressMost · 93%
Owner nameNearly all · 99%
Assessed or market valueNearly all · 100%
Year builtNot published
Building sizeNot published
Last saleMost · 92%
Land useNearly all · 100%
ZoningNot published

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 Adams County records carry an owner name.

Infrastructure in and around Adams County

Power plants

About 30 operable plants with about 1,800 MW of nameplate capacity; largest by capacity: natural gas, battery and pumped storage, solar. Proposed generators add 8 MW.

Within 50 km: /v1/lookup section power; details: /v1/records/{id}

Substations and transmission

About 35 in-service substations, about 15 rated 230 kV or higher.

About 410 miles of transmission lines: about 25 mi at under 100 kV; about 100 mi at 100–161 kV; about 260 mi at 220–287 kV; about 20 mi at 345 kV.

Water and sewer service

Service areas of about 45 community water systems cover about 16% 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

2 tracked projects: 1 proposed, 1 status not reported.

Within 10 km: /v1/lookup section datacenters

Flood zones and wetlands

Special flood hazard areas cover about 7% 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 150 miles of active rail, about 90 of it main line
  • About 70 miles of national freight network highway
  • 1 intermodal rail terminal

Within 25 km: /v1/lookup section logistics

Example requests for Adams 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 its water and sewer service

/v1/lookup matches 10680 RIVERDALE RD, THORNTON, CO and returns the parcel's korzy_id and record, plus the water and sewer service areas at the parcel and the nearest treatment plants. 2 credits.

curl --fail-with-body -sS \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"address":"10680 RIVERDALE RD, THORNTON, CO","sections":["utilities"]}' \
  https://api.korzy.co/v1/lookup
Python
import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "10680 RIVERDALE RD, THORNTON, CO", "sections": ["utilities"]},
    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"]["utilities"]["status"])
Production response (trimmed)
{
  "location": {
    "longitude": -104.92480972939312,
    "latitude": 39.888325949999995,
    "address": "10680 RIVERDALE RD, THORNTON",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "08001-05298c181b72683bb8fa",
        "korzy_id": "08001-05298c181b72683bb8fa",
        "parcelid": "0172107400014",
        "parceladdr": "10680 RIVERDALE RD",
        "parcelcity": "THORNTON",
        "situs_zip": "80233",
        "statefp": "08",
        "geoid": "08001",
        "longitude": -104.92480972939312,
        "latitude": 39.888325949999995,
        "usedesc": "Exempt",
        "taxacres": 45.842,
        "totalvalue": 0,
        "assessed_value_usd": 7430,
        "market_value_usd": 27510,
        "saledate": "2004-10-07",
        "saleamt": 888000,
        "updated": "2026-04-23"
      }
    ],
    "truncated": false
  },
  "sections": {
    "utilities": {
      "status": "ok",
      "data": {
        "water": [
          {
            "id": "utility:water:38506",
            "feature_id": "water:38506",
            "name": "THORNTON CITY OF",
            "boundary_basis": "System Sourced"
          }
        ],
        "sewer": [
          {
            "id": "utility:sewer:4738",
            "feature_id": "sewer:4738",
            "name": "Metro Wastewater Reclamation District",
            "boundary_basis": "Modeled"
          }
        ],
        "treatment_plants": [
          {
            "id": "utility:treatment:314",
            "feature_id": "treatment:314",
            "name": "South Adams County WSD",
            "distance_km": 2.112383508870897
          },
          {
            "id": "utility:treatment:492",
            "feature_id": "treatment:492",
            "name": "Westminster Big Dry Creek WWTF",
            "distance_km": 8.110845144612117
          },
          {
            "id": "utility:treatment:311",
            "feature_id": "treatment:311",
            "name": "Metro Wastewater Reclamation District",
            "distance_km": 8.82546751549018
          }
        ],
        "truncated": {
          "water": false,
          "sewer": false
        }
      },
      "provenance": [
        {
          "dataset": "water",
          "data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
        },
        {
          "dataset": "sewer",
          "data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
        },
        {
          "dataset": "treatment",
          "data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
        }
      ]
    }
  },
  "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 08001-05298c181b72683bb8fa, 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":"08001-05298c181b72683bb8fa"}],"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 $KORZY_API_KEY" \
  https://api.korzy.co/v1/records/08001-05298c181b72683bb8fa
JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("08001-05298c181b72683bb8fa")}`, {
  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);

Adams County data questions

How many parcels in Adams County include last sale?
About 170,000 of about 190,000 parcel records (92%) include last sale.
Does the Korzy API return owner names for Adams County parcels?
Yes. 99% of Adams 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 Adams County?
Korzy tracks 2 data-center projects in Adams County: 1 proposed 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 Adams County?
About 30 operable power plants in Adams County total about 1,800 MW of nameplate capacity, mainly natural gas, battery and pumped storage and solar.
Which water systems serve Adams County?
Service areas of about 45 community water systems cover about 16% of Adams 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.

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Build on Adams 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.

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