Wayne County, MI parcel and infrastructure data API

Parcel coverage in Wayne County

About 380,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from October 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. 99% of Wayne County records carry an owner name.

Infrastructure in and around Wayne County

Example requests for Wayne 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 12737 LINWOOD, DETROIT, MI 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=12737 LINWOOD, DETROIT, MI' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "12737 LINWOOD, DETROIT, MI"},
    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": "26163-2af90053ab8bf9da9536",
      "address": "12737 LINWOOD",
      "city": "DETROIT",
      "postcode": "48238",
      "county": "Wayne",
      "statefp": "26",
      "longitude": -83.1202486589235,
      "latitude": 42.389873699999995,
      "match_type": "exact",
      "parcelid": "10007588",
      "parceladdr": "12737 LINWOOD",
      "parcelcity": "DETROIT",
      "situs_zip": "48238",
      "usedesc": "MIXED USE-OFFICE",
      "yearbuilt": 1925,
      "bldgsqft": 6012,
      "taxacres": 0.199,
      "totalvalue": 0,
      "saledate": "2017-12-28",
      "saleamt": 25000,
      "updated": "2026-10-30",
      "geoid": "26163"
    }
  ],
  "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, 26163-2af90053ab8bf9da9536, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-83.120249' \
  --data-urlencode 'latitude=42.389874' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-83.120249", "latitude": "42.389874", "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=-83.120249' \
  --data-urlencode 'latitude=42.389874' \
  --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": "-83.120249", "latitude": "42.389874", "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_6abb8ef2c94b93876669",
      "name": "Unnamed data center",
      "operator": "Verizon Wireless",
      "status": "unknown",
      "city": "Detroit",
      "state": "MI",
      "longitude": -83.07697676797723,
      "latitude": 42.3262376,
      "location_precision": "footprint",
      "distance_km": 7.9191300175095245
    },
    {
      "project_id": "dc_5dd99f889760a042b769",
      "name": "Unnamed data center",
      "operator": "Quicken Loans",
      "status": "unknown",
      "city": "Detroit",
      "state": "MI",
      "longitude": -83.06971683362536,
      "latitude": 42.32616885,
      "location_precision": "footprint",
      "distance_km": 8.210891751797883
    },
    {
      "project_id": "dc_5f933bec697ecfd2df76",
      "name": "Cogent Detroit Data Center (1320 3rd St)",
      "operator": "Cogent Communications",
      "status": "operating",
      "city": "Detroit",
      "state": "MI",
      "longitude": -83.055773,
      "latitude": 42.330743,
      "location_precision": "approximate",
      "distance_km": 8.443731714233017
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Wayne County data questions

How many parcels in Wayne County include year built?

About 230,000 of about 380,000 parcel records (61%) include year built.

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

Yes. 99% of Wayne 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 Wayne County?

Korzy tracks about 10 data-center projects in Wayne County: 5 operating, 4 status not reported and 2 proposed. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Wayne County?

About 10 operable power plants in Wayne County total about 1,400 MW of nameplate capacity, mainly natural gas, battery and pumped storage and other fuels.

Which water systems serve Wayne County?

Service areas of about 55 community water systems cover about 76% of Wayne County, and sewer service areas cover about 84%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

• Macomb County, MIBorders Wayne County · about 380,000 parcels
• Oakland County, MIBorders Wayne County · about 490,000 parcels
• Kent County, MIabout 270,000 parcels

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