Macomb County, MI parcel and infrastructure data API
Korzy has about 380,000 parcel records for Macomb County, Michigan, with source updates through August 2026. Nearly every record carries values; 79% include land use and 77% include owner names. In and around the county the API also maps 2 data-center projects (1 operating); 1 port with reported cargo; and 3 power plants with about 140 MW of capacity, led by natural gas. Look up any parcel by address or coordinates, then check water, sewer and infrastructure context at the same point.
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 /v1/records/{id}. Share of records with each field:
| Field | Coverage | Share |
|---|---|---|
| Situs address | Nearly all · 99% | |
| Owner name | Most · 77% | |
| Assessed or market value | Nearly all · 99% | |
| Year built | Not published | |
| Building size | Not published | |
| Last sale | Not published | |
| Land use | Most · 79% | |
| Zoning | Many · 72% |
Owner name and mailing address are returned by /v1/enrich with the owner group, at 2 credits per parcel instead of 1 credit. 77% of Macomb County records carry an owner name.
Infrastructure in and around Macomb County
Power plants
3 operable plants with about 140 MW of nameplate capacity; largest by capacity: natural gas, oil, other fuels.
Within 50 km: /v1/lookup section power; details: /v1/records/{id}
Substations and transmission
About 45 in-service substations, 4 rated 230 kV or higher.
About 500 miles of transmission lines: about 290 mi at 100–161 kV; about 200 mi at 345 kV.
Water and sewer service
Service areas of about 35 community water systems cover about 50% of the county.
Sewer service areas of 7 systems cover about 66%.
At an address or point: /v1/lookup section utilities
Data-center projects
2 tracked projects: 1 operating, 1 status not reported.
Within 10 km: /v1/lookup section datacenters
Grid capacity data
1 utility-published grid capacity layer cover parts of Macomb County, including load headroom.
Nearby records: /v1/lookup section grid
Flood zones and wetlands
Special flood hazard areas cover about 6% of the county on the current federal flood maps, published October 2026.
Mapped wetlands cover about 7%.
At an address or point: /v1/lookup section environment
Rail, ports and freight
- About 70 miles of active rail, about 40 of it main line
- About 45 miles of national freight network highway
- 1 port area with reported cargo tonnage
Within 25 km: /v1/lookup section logistics
Example requests for Macomb 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 16700 17 MILE RD, CLINTON TOWNSHIP, MI 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":"16700 17 MILE RD, CLINTON TOWNSHIP, MI","sections":["utilities"]}' \
https://api.korzy.co/v1/lookupPython
import os
import requests
response = requests.post(
"https://api.korzy.co/v1/lookup",
json={"address": "16700 17 MILE RD, CLINTON TOWNSHIP, MI", "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": -82.95323702243485,
"latitude": 42.583930699999996,
"address": "16700 17 MILE RD, CLINTON TOWNSHIP",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "26099-dfc2fb492853f05b3d30",
"korzy_id": "26099-dfc2fb492853f05b3d30",
"parcelid": "16-11-18-476-028",
"parceladdr": "16700 17 MILE RD",
"parcelcity": "CLINTON TOWNSHIP",
"situs_zip": "48038",
"statefp": "26",
"geoid": "26099",
"longitude": -82.95323702243485,
"latitude": 42.583930699999996,
"usedesc": "RETAIL",
"zoning_code": "B-2",
"totalvalue": 1381800,
"updated": "2004-05-29"
}
],
"truncated": false
},
"sections": {
"utilities": {
"status": "ok",
"data": {
"water": [
{
"id": "utility:water:42077",
"feature_id": "water:42077",
"name": "CLINTON TOWNSHIP",
"boundary_basis": "System Sourced"
}
],
"sewer": [
{
"id": "utility:sewer:985",
"feature_id": "sewer:985",
"name": "GLWA WRRF",
"boundary_basis": "Sourced"
}
],
"treatment_plants": [
{
"id": "utility:treatment:1808",
"feature_id": "treatment:1808",
"name": "MT CLEMENS WWTP",
"distance_km": 7.612623312499582
},
{
"id": "utility:treatment:1811",
"feature_id": "treatment:1811",
"name": "WARREN WWTP",
"distance_km": 7.838849421802582
},
{
"id": "utility:treatment:1809",
"feature_id": "treatment:1809",
"name": "NEW BALTIMORE W W T P",
"distance_km": 19.603990966458586
}
],
"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 26099-dfc2fb492853f05b3d30, 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":"26099-dfc2fb492853f05b3d30"}],"fields":["identity","sale","owner"]}' \
https://api.korzy.co/v1/enrich3. 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 $KORZY_API_KEY" \
https://api.korzy.co/v1/records/26099-dfc2fb492853f05b3d30JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("26099-dfc2fb492853f05b3d30")}`, {
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);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. 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 Macomb County?
- Korzy tracks 2 data-center projects in Macomb County: 1 operating 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 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%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or 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
Build on Macomb 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.