Johnson County, KS parcel and infrastructure data API
Korzy has about 280,000 parcel records for Johnson County, Kansas, with source updates through June 2026. 83% include values and 83% include year built. In and around the county the API also maps about 10 data-center projects (4 operating and 1 under construction); 2 power plants with about 450 MW of capacity, led by natural gas; and about 110 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 Johnson County
About 280,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from June 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:
| Field | Coverage | Share |
|---|---|---|
| Situs address | Nearly all · 99% | |
| Owner name | Not published | |
| Assessed or market value | Most · 83% | |
| Year built | Most · 83% | |
| Building size | Not published | |
| Last sale | Not published | |
| Land use | Many · 72% | |
| Zoning | Not published |
Johnson County records do not include owner names. See pricing for credit costs.
Infrastructure in and around Johnson County
Power plants
2 operable plants with about 450 MW of nameplate capacity; largest by capacity: natural gas.
Plant details: /api/power/plants/{plant_id}
Substations and transmission
About 55 in-service substations, 4 rated 230 kV or higher.
About 320 miles of transmission lines: 3 mi at under 100 kV; about 260 mi at 100–161 kV; about 55 mi at 345 kV.
Water and sewer service
Service areas of about 15 community water systems cover about 90% of the county.
Sewer service areas of about 15 systems cover about 43%.
At a point: /api/utilities/context
Data-center projects
About 10 tracked projects: 4 operating, 1 under construction, 1 proposed, 5 status not reported. Reported operating capacity: about 15 MW.
Within 10 km of a point: /api/datacenters/context
Flood zones and wetlands
Special flood hazard areas cover about 8% of the county on the current federal flood maps, published October 2026.
Rail, ports and freight
- About 110 miles of active rail, about 85 of it main line
- About 45 miles of national freight network highway
- 1 intermodal rail terminal
Within 25 km of a point: /api/logistics/context
Example requests for Johnson 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 11055 HAUSER ST, LENEXA, KS 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=11055 HAUSER ST, LENEXA, KS' \
https://api.korzy.co/api/searchPython
import os
import requests
response = requests.get(
"https://api.korzy.co/api/search",
params={"q": "11055 HAUSER ST, LENEXA, KS"},
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"])Response (trimmed)
{
"results": [
{
"korzy_id": "20091-df72861586fcc7c6c8d9",
"address": "11055 HAUSER ST",
"city": "LENEXA",
"postcode": "66210",
"county": "Johnson",
"statefp": "20",
"longitude": -94.73844242887833,
"latitude": 38.928572800001646,
"match_type": "exact",
"parcelid": "IP84250000 U04A",
"parceladdr": "11055 HAUSER ST",
"parcelcity": "LENEXA",
"situs_zip": "66210",
"usedesc": "COMMERCIAL",
"yearbuilt": 2007,
"totalvalue": 329135,
"updated": "2026-06-18",
"geoid": "20091"
}
],
"truncated": false
}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, 20091-df72861586fcc7c6c8d9, in records. 1 credit per 10 records requested.
curl --fail-with-body -sS --get \
-H "Authorization: Bearer $KORZY_API_KEY" \
--data-urlencode 'longitude=-94.738442' \
--data-urlencode 'latitude=38.928573' \
--data-urlencode 'limit=5' \
https://api.korzy.co/api/query/pointJavaScript
const params = new URLSearchParams({"longitude": "-94.738442", "latitude": "38.928573", "limit": "5"});
const response = await fetch(`https://api.korzy.co/api/query/point?${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=-94.738442' \
--data-urlencode 'latitude=38.928573' \
--data-urlencode 'radius_km=10' \
--data-urlencode 'limit=3' \
https://api.korzy.co/api/datacenters/contextPython
import os
import requests
response = requests.get(
"https://api.korzy.co/api/datacenters/context",
params={"longitude": "-94.738442", "latitude": "38.928573", "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"])Response (trimmed)
{
"projects": [
{
"project_id": "dc_629d3d57b9fba9b9e5db",
"name": "TierPoint Kansas City - Lenexa",
"operator": "TierPoint",
"status": "operating",
"city": "Lenexa",
"state": "KS",
"longitude": -94.75523258274056,
"latitude": 38.94074365,
"location_precision": "footprint",
"distance_km": 1.9851002715199637
},
{
"project_id": "dc_baa4421394a4dfc6eb69",
"name": "Unnamed data center",
"status": "unknown",
"city": "Lenexa",
"state": "KS",
"longitude": -94.7683727750665,
"latitude": 38.926806,
"location_precision": "footprint",
"distance_km": 2.5965480330121955
},
{
"project_id": "dc_ec973b647e9736803564",
"name": "DataBank MCI3 South Lake Campus Data Center",
"operator": "DataBank",
"status": "operating",
"city": "Lenexa",
"state": "KS",
"longitude": -94.769520334995,
"latitude": 38.925685125075,
"location_precision": "approximate",
"operational_mw": 12.75,
"distance_km": 2.7075022826769413
}
],
"radius_km": 10,
"limit": 3,
"truncated": true
}Johnson County data questions
- How many parcels in Johnson County include year built?
- About 230,000 of about 280,000 parcel records (83%) include year built.
- Does the Korzy API return owner names for Johnson County parcels?
- Johnson 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 Johnson County?
- Korzy tracks about 10 data-center projects in Johnson County: 5 status not reported, 4 operating and 1 under construction. /api/datacenters/context lists projects within 10 km of any point.
- How much power generation is in Johnson County?
- 2 operable power plants in Johnson County total about 450 MW of nameplate capacity, mainly natural gas.
- Which water systems serve Johnson County?
- Service areas of about 15 community water systems cover about 90% of Johnson County, and sewer service areas cover about 43%. /api/utilities/context returns the water and sewer matches at a point.
More featured counties
- Jackson County, MOBorders Johnson County · about 300,000 parcels
Build on Johnson County parcel data
Search, point and record lookups work the same in every county Korzy covers. Credits are shared across parcels, utilities, environment, logistics and data-center routes.