Clayton County, GA parcel and infrastructure data API
Korzy has about 91,000 parcel records for Clayton County, Georgia, with source updates through October 2026. Nearly every record carries owner names, values, last sale and land use; 92% include year built and 88% include building size. In and around the county the API also maps 1 data-center project; and about 40 miles of active rail. Look up any parcel by address or coordinates, then check water, sewer and infrastructure context at the same point.
Parcel coverage in Clayton County
About 91,000 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 /v1/records/{id}. Share of records with each field:
| Field | Coverage | Share |
|---|---|---|
| Situs address | Nearly all · 100% | |
| Owner name | Nearly all · 99% | |
| Assessed or market value | Nearly all · 99% | |
| Year built | Most · 92% | |
| Building size | Most · 88% | |
| Last sale | Nearly all · 99% | |
| Land use | Nearly all · 99% | |
| Zoning | Nearly all · 99% |
Owner name and mailing address are returned by /v1/enrich with the owner group, at 2 credits per parcel instead of 1 credit. 99% of Clayton County records carry an owner name.
Infrastructure in and around Clayton County
Substations and transmission
About 35 in-service substations, 6 rated 230 kV or higher.
About 180 miles of transmission lines: about 95 mi at 100–161 kV; about 65 mi at 220–287 kV; about 20 mi at 500 kV.
Water and sewer service
Service areas of 8 community water systems cover about 99% of the county.
Sewer service areas of 8 systems cover about 81%.
At an address or point: /v1/lookup section utilities
Data-center projects
1 tracked project: 1 permitted. Reported planned capacity: about 1,400 MW.
Within 10 km: /v1/lookup section datacenters
Flood zones and wetlands
Special flood hazard areas cover about 9% of the county on the current federal flood maps, published September 2026.
Mapped wetlands cover about 4%.
At an address or point: /v1/lookup section environment
Rail, ports and freight
- About 40 miles of active rail, about 25 of it main line
- About 30 miles of national freight network highway
Within 25 km: /v1/lookup section logistics
Example requests for Clayton 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 28 VALLEY HILL RD, RIVERDALE, GA 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":"28 VALLEY HILL RD, RIVERDALE, GA","sections":["utilities"]}' \
https://api.korzy.co/v1/lookupPython
import os
import requests
response = requests.post(
"https://api.korzy.co/v1/lookup",
json={"address": "28 VALLEY HILL RD, RIVERDALE, GA", "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": -84.38951473072359,
"latitude": 33.55886515,
"address": "28 VALLEY HILL RD, RIVERDALE",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "13063-862357640e60755eae19",
"korzy_id": "13063-862357640e60755eae19",
"parcelid": "13173C A003",
"parceladdr": "28 VALLEY HILL RD",
"parcelcity": "RIVERDALE",
"situs_zip": "30274",
"statefp": "13",
"geoid": "13063",
"longitude": -84.38951473072359,
"latitude": 33.55886515,
"usedesc": "Religious (Church, Synagogue, Mosque)",
"land_use_code": "620",
"zoning_code": "RS110",
"yearbuilt": 1969,
"bldgsqft": 2536,
"taxacres": 1.41,
"totalvalue": 188200,
"land_value_usd": 30300,
"improvement_value_usd": 157900,
"assessed_value_usd": -75280,
"market_value_usd": 188200,
"saledate": "2019-08-10",
"saleamt": 0,
"updated": "2026-10-30"
}
],
"truncated": false
},
"sections": {
"utilities": {
"status": "ok",
"data": {
"water": [
{
"id": "utility:water:40918",
"feature_id": "water:40918",
"name": "CLAYTON COUNTY WATER AUTHORITY",
"boundary_basis": "System Sourced"
}
],
"sewer": [
{
"id": "utility:sewer:5609",
"feature_id": "sewer:5609",
"name": "E L Huie-Casey Natural Treatment System",
"boundary_basis": "Modeled"
}
],
"treatment_plants": [
{
"id": "utility:treatment:15087",
"feature_id": "treatment:15087",
"name": "E L Huie-Casey Natural Treatment System",
"distance_km": 11.426175468312046
},
{
"id": "utility:treatment:3119",
"feature_id": "treatment:3119",
"name": "Northeast Clayton WRF",
"distance_km": 11.852447711331893
},
{
"id": "utility:treatment:3380",
"feature_id": "treatment:3380",
"name": "Stephan D. Purifoy WPCP",
"distance_km": 15.124554071573062
}
],
"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 13063-862357640e60755eae19, 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":"13063-862357640e60755eae19"}],"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 $KORZY_API_KEY" \
https://api.korzy.co/v1/records/13063-862357640e60755eae19JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("13063-862357640e60755eae19")}`, {
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);Clayton County data questions
- How many parcels in Clayton County include year built?
- About 84,000 of about 91,000 parcel records (92%) include year built.
- Does the Korzy API return owner names for Clayton County parcels?
- Yes. 99% of Clayton 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 Clayton County?
- Korzy tracks 1 data-center project in Clayton County: 1 permitted. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.
- Which water systems serve Clayton County?
- Service areas of 8 community water systems cover about 99% of Clayton County, and sewer service areas cover about 81%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.
- How much of Clayton County is in a mapped flood zone?
- About 9% of Clayton County's area falls within special flood hazard areas on the current federal flood maps, and mapped wetlands cover about 4%.
More featured counties
- Fulton County, GABorders Clayton County · about 370,000 parcels
- Columbia County, GAabout 68,000 parcels
- Bartow County, GAabout 52,000 parcels
- Cobb County, GAabout 310,000 parcels
Build on Clayton 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.