Kent County, MI parcel and infrastructure data API

Parcel coverage in Kent County

About 270,000 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. 69% of Kent County records carry an owner name.

Infrastructure in and around Kent County

Example requests for Kent 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 400 76TH ST SW, BYRON CENTER, 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=400 76TH ST SW, BYRON CENTER, MI' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "400 76TH ST SW, BYRON CENTER, 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": "26081-7f10deb906137c4c02a0",
      "address": "400 76TH ST SW",
      "city": "BYRON CENTER",
      "postcode": "49315",
      "county": "KENT",
      "statefp": "26",
      "longitude": -85.6731833784784,
      "latitude": 42.82564305,
      "match_type": "exact",
      "parcelid": "41-21-13-100-090",
      "parceladdr": "400 76TH ST SW",
      "parcelcity": "BYRON CENTER",
      "situs_zip": "49315",
      "land_use_code": "201",
      "taxacres": 6.56216562,
      "totalvalue": 3555327,
      "assessed_value_usd": 1396000,
      "updated": "2026-10-30",
      "geoid": "26081"
    }
  ],
  "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, 26081-7f10deb906137c4c02a0, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-85.673183' \
  --data-urlencode 'latitude=42.825643' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-85.673183", "latitude": "42.825643", "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=-85.673183' \
  --data-urlencode 'latitude=42.825643' \
  --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": "-85.673183", "latitude": "42.825643", "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_6299c8c16781bb30b39f",
      "name": "123NET DC4 Grand Rapids Data Center",
      "operator": "123NET",
      "status": "operating",
      "city": "Byron Center",
      "state": "MI",
      "longitude": -85.67268596115,
      "latitude": 42.826202163837,
      "location_precision": "approximate",
      "distance_km": 0.07422246077495613
    },
    {
      "project_id": "dc_c29da05973b3a165ebd6",
      "name": "US Signal MI02 Grand Rapids Data Center",
      "operator": "US Signal",
      "status": "operating",
      "city": "Byron Center",
      "state": "MI",
      "longitude": -85.67268596115,
      "latitude": 42.826202163837,
      "location_precision": "approximate",
      "distance_km": 0.07422246077495613
    },
    {
      "project_id": "dc_317cfe44afea37e29810",
      "name": "Switch Pyramid Campus",
      "operator": "Switch",
      "status": "under_construction",
      "city": "Gaines Township",
      "state": "MI",
      "longitude": -85.64,
      "latitude": 42.823,
      "location_precision": "exact",
      "operational_mw": 225,
      "planned_mw": 320,
      "distance_km": 2.7221528545221014
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Kent County data questions

How many parcels in Kent County include values?

About 260,000 of about 270,000 parcel records (96%) include values.

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

Yes. 69% of Kent 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 Kent County?

Korzy tracks 7 data-center projects in Kent County: 3 operating, 3 proposed and 1 under construction. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Kent County?

8 operable power plants in Kent County total about 70 MW of nameplate capacity, mainly natural gas, other fuels and battery and pumped storage.

Which water systems serve Kent County?

Service areas of about 45 community water systems cover about 26% of Kent County, and sewer service areas cover about 30%. /api/utilities/context returns the water and sewer matches at a point.

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