Butler County, OH parcel and infrastructure data API
Korzy has about 170,000 parcel records for Butler County, Ohio, with source updates through November 2026. Nearly every record carries land use; 73% include year built and 73% include building size. In and around the county the API also maps 8 power plants with about 2,100 MW of capacity, led by natural gas; 5 data-center projects (1 operating); and about 200 miles of active rail. Look up any parcel by address or coordinates, then check nearby data-center projects, utilities and grid context at the same point.
Parcel coverage in Butler County
About 170,000 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 /v1/records/{id}. Share of records with each field:
| Field | Coverage | Share |
|---|---|---|
| Situs address | Nearly all · 100% | |
| Owner name | Not published | |
| Assessed or market value | Not published | |
| Year built | Many · 73% | |
| Building size | Many · 73% | |
| Last sale | Many · 59% | |
| Land use | Nearly all · 95% | |
| Zoning | Not published |
Butler County records do not include owner names. See pricing for credit costs.
Infrastructure in and around Butler County
Power plants
8 operable plants with about 2,100 MW of nameplate capacity; largest by capacity: natural gas, battery and pumped storage, other fuels. Proposed generators add about 10 MW.
Within 50 km: /v1/lookup section power; details: /v1/records/{id}
Substations and transmission
About 95 in-service substations, 3 rated 230 kV or higher.
About 400 miles of transmission lines: about 65 mi at under 100 kV; about 170 mi at 100–161 kV; about 75 mi at 345 kV.
Water and sewer service
Service areas of about 15 community water systems cover about 89% of the county.
Sewer service areas of about 15 systems cover about 33%.
At an address or point: /v1/lookup section utilities
Data-center projects
5 tracked projects: 1 operating, 1 permitted, 2 proposed, 1 status not reported. Reported planned capacity: about 250 MW.
Within 10 km: /v1/lookup section datacenters
Flood zones and wetlands
Special flood hazard areas cover about 7% of the county on the current federal flood maps, published October 2026.
Mapped wetlands cover about 1%.
At an address or point: /v1/lookup section environment
Rail, ports and freight
- About 200 miles of active rail, about 110 of it main line
- About 10 miles of national freight network highway
Within 25 km: /v1/lookup section logistics
Example requests for Butler 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 nearby data-center projects
/v1/lookup matches 312 CLEVELAND AVE, HAMILTON, OH and returns the parcel's korzy_id and record, plus the data-center projects within 10 km, nearest first. 2 credits.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"address":"312 CLEVELAND AVE, HAMILTON, OH","sections":["datacenters"]}' \
https://api.korzy.co/v1/lookupPython
import os
import requests
response = requests.post(
"https://api.korzy.co/v1/lookup",
json={"address": "312 CLEVELAND AVE, HAMILTON, OH", "sections": ["datacenters"]},
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"]["datacenters"]["status"])Production response (trimmed)
{
"location": {
"longitude": -84.56767332321553,
"latitude": 39.4077534,
"address": "312 CLEVELAND AVE, HAMILTON",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "39017-2ca3ba55f21385d5d793",
"korzy_id": "39017-2ca3ba55f21385d5d793",
"parcelid": "39017-P6411014000127",
"parceladdr": "312 CLEVELAND AVE",
"parcelcity": "HAMILTON",
"situs_zip": "45013",
"statefp": "39",
"geoid": "39017",
"longitude": -84.56767332321553,
"latitude": 39.4077534,
"updated": "2026-11-02"
}
],
"truncated": false
},
"sections": {
"datacenters": {
"status": "ok",
"data": {
"radius_km": 10,
"projects": [
{
"id": "datacenter:dc_81e791bd3dc24a3e05e1",
"project_id": "dc_81e791bd3dc24a3e05e1",
"name": "Hamilton Innovation Center",
"operator": "Logistix Property Group",
"status": "proposed",
"state": "OH",
"city": "Hamilton",
"address": "1380 University Boulevard",
"longitude": -84.5613,
"latitude": 39.3995,
"location_precision": "approximate",
"source_count": 1,
"source_date": "2026-09-21",
"mapped": true,
"distance_km": 1.0686914003463663
},
{
"id": "datacenter:dc_778bcc3f3340876110c9",
"project_id": "dc_778bcc3f3340876110c9",
"name": "CyrusOne Cincinnati-Hamilton CIN4",
"operator": "CyrusOne",
"status": "unknown",
"state": "OH",
"longitude": -84.56589096932771,
"latitude": 39.3847186,
"location_precision": "footprint",
"source_count": 2,
"source_date": "2026-02-09",
"mapped": true,
"distance_km": 2.5659312934916616
}
],
"truncated": false,
"note": "Straight-line distance to the reported project point; inspect location_precision. Projects merge supported source matches, not every nearby building. Approximate locations do not identify a parcel. Reported IT load, facility power, planned capacity and estimates remain separate source claims. No record or unknown status does not establish absence or inactivity."
},
"provenance": [
{
"dataset": "datacenters",
"as_of": "2026-11-02",
"data_version": "20261102T123021962884Z"
}
]
}
},
"credits": {
"charged": 2,
"refunded": 0
}
}2. Add value and sale fields
/v1/enrich returns the fields you choose for up to 25 parcels per request; here the parcel 39017-2ca3ba55f21385d5d793. 1 credit.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"items":[{"korzy_id":"39017-2ca3ba55f21385d5d793"}],"fields":["identity","value","sale"]}' \
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 $KORZY_API_KEY" \
https://api.korzy.co/v1/records/39017-2ca3ba55f21385d5d793JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("39017-2ca3ba55f21385d5d793")}`, {
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);Butler County data questions
- How many parcels in Butler County include year built?
- About 120,000 of about 170,000 parcel records (73%) include year built.
- Does the Korzy API return owner names for Butler County parcels?
- Butler County parcel records do not include owner names. Values, land use and building facts are returned where the county publishes them.
- How many data-center projects are in Butler County?
- Korzy tracks 5 data-center projects in Butler County: 2 proposed, 1 operating and 1 permitted. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.
- How much power generation is in Butler County?
- 8 operable power plants in Butler County total about 2,100 MW of nameplate capacity, mainly natural gas, battery and pumped storage and other fuels.
- Which water systems serve Butler County?
- Service areas of about 15 community water systems cover about 89% of Butler County, and sewer service areas cover about 33%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.
More featured counties
- Hamilton County, OHBorders Butler County · about 420,000 parcels
- Franklin County, OHabout 500,000 parcels
- Cuyahoga County, OHabout 520,000 parcels
Build on Butler 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.