Maricopa County, AZ parcel and infrastructure data API

Parcel coverage in Maricopa County

About 1.8 million parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from November 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. 100% of Maricopa County records carry an owner name.

Infrastructure in and around Maricopa County

Example requests for Maricopa 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 3616 N 12TH ST, PHOENIX, AZ 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=3616 N 12TH ST, PHOENIX, AZ' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "3616 N 12TH ST, PHOENIX, AZ"},
    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": "04013-117d227993e9732ebf63",
      "address": "3616 N 12TH ST",
      "city": "PHOENIX",
      "postcode": "85014",
      "county": "Maricopa",
      "statefp": "04",
      "longitude": -112.05671164982704,
      "latitude": 33.48987955,
      "match_type": "exact",
      "parcelid": "118-17-049",
      "parceladdr": "3616 N 12TH ST",
      "parcelcity": "PHOENIX",
      "situs_zip": "85014",
      "usedesc": "COMMERCIAL",
      "land_use_code": "0347",
      "yearbuilt": 2021,
      "bldgsqft": 12800,
      "taxacres": 12800,
      "land_value_usd": 427600,
      "improvement_value_usd": 1710400,
      "assessed_value_usd": 213800,
      "market_value_usd": 2138000,
      "saledate": "2026-06-01",
      "saleamt": 2399000,
      "updated": "2026-11-02",
      "geoid": "04013"
    }
  ],
  "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, 04013-117d227993e9732ebf63, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-112.056712' \
  --data-urlencode 'latitude=33.48988' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-112.056712", "latitude": "33.48988", "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=-112.056712' \
  --data-urlencode 'latitude=33.48988' \
  --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": "-112.056712", "latitude": "33.48988", "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_7cf2e0c6ea3ec1ab5294",
      "name": "Unnamed data center",
      "status": "unknown",
      "city": "Phoenix",
      "state": "AZ",
      "longitude": -112.07054970780842,
      "latitude": 33.49329025,
      "location_precision": "footprint",
      "distance_km": 1.3380690759412068
    },
    {
      "project_id": "dc_7bfc06d9b7762557b6fd",
      "name": "Lumen Phoenix 1",
      "operator": "Lumen Technologies",
      "status": "operating",
      "city": "Phoenix",
      "state": "AZ",
      "longitude": -112.0707915825171,
      "latitude": 33.49435245,
      "location_precision": "footprint",
      "distance_km": 1.397140675888634
    },
    {
      "project_id": "dc_02af34dd705b24b90469",
      "name": "QTS",
      "operator": "Quality Technology Services",
      "status": "unknown",
      "state": "AZ",
      "longitude": -111.99756037068683,
      "latitude": 33.4647281,
      "location_precision": "footprint",
      "distance_km": 6.157957730170124
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Maricopa County data questions

How many parcels in Maricopa County include year built?

About 1.6 million of about 1.8 million parcel records (88%) include year built.

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

Yes. 100% of Maricopa 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 Maricopa County?

Korzy tracks about 90 data-center projects in Maricopa County: 40 status not reported, 25 operating and 8 under construction. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Maricopa County?

About 70 operable power plants in Maricopa County total about 22,000 MW of nameplate capacity, mainly natural gas, battery and pumped storage and nuclear.

Which water systems serve Maricopa County?

Service areas of about 110 community water systems cover about 18% of Maricopa County, and sewer service areas cover about 10%. /api/utilities/context returns the water and sewer matches at a point.

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