Macomb County, MI parcel and infrastructure data API

Parcel coverage in Macomb County

About 380,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from August 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. 77% of Macomb County records carry an owner name.

Infrastructure in and around Macomb County

Example requests for Macomb 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 16700 17 MILE RD, CLINTON TOWNSHIP, 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=16700 17 MILE RD, CLINTON TOWNSHIP, MI' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "16700 17 MILE RD, CLINTON TOWNSHIP, 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": "26099-dfc2fb492853f05b3d30",
      "address": "16700 17 MILE RD",
      "city": "CLINTON TOWNSHIP",
      "postcode": "48038",
      "county": "Macomb",
      "statefp": "26",
      "longitude": -82.95323702243485,
      "latitude": 42.583930699999996,
      "match_type": "exact",
      "parcelid": "16-11-18-476-028",
      "parceladdr": "16700 17 MILE RD",
      "parcelcity": "CLINTON TOWNSHIP",
      "situs_zip": "48038",
      "usedesc": "RETAIL",
      "zoning_code": "B-2",
      "totalvalue": 1381800,
      "updated": "2004-05-29",
      "geoid": "26099"
    }
  ],
  "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, 26099-dfc2fb492853f05b3d30, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-82.953237' \
  --data-urlencode 'latitude=42.583931' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-82.953237", "latitude": "42.583931", "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 water and sewer service

/api/utilities/context returns the water and sewer service areas at the point and the nearest treatment plants. 1 credit.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-82.953237' \
  --data-urlencode 'latitude=42.583931' \
  https://api.korzy.co/api/utilities/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/utilities/context",
    params={"longitude": "-82.953237", "latitude": "42.583931"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
matches = response.json()["matches"]
print([area["name"] for area in matches["water"]])

{
  "longitude": -82.953237,
  "latitude": 42.583931,
  "matches": {
    "water": [
      {
        "feature_id": "water:42077",
        "name": "CLINTON TOWNSHIP",
        "boundary_basis": "System Sourced"
      }
    ],
    "sewer": [
      {
        "feature_id": "sewer:985",
        "name": "GLWA WRRF",
        "boundary_basis": "Sourced"
      }
    ]
  },
  "nearby_treatment": [
    {
      "feature_id": "treatment:1808",
      "name": "MT CLEMENS WWTP",
      "distance_km": 7.612612763797933
    },
    {
      "feature_id": "treatment:1811",
      "name": "WARREN WWTP",
      "distance_km": 7.8388746904329345
    }
  ]
}

Macomb County data questions

How many parcels in Macomb County include values?

About 380,000 of about 380,000 parcel records (99%) include values.

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

Yes. 77% of Macomb 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 Macomb County?

Korzy tracks 2 data-center projects in Macomb County: 1 operating and 1 status not reported. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Macomb County?

3 operable power plants in Macomb County total about 140 MW of nameplate capacity, mainly natural gas, oil and other fuels.

Which water systems serve Macomb County?

Service areas of about 35 community water systems cover about 50% of Macomb County, and sewer service areas cover about 66%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

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

All featured Michigan counties