How many parcels in Union County include year built?

About 110,000 of about 110,000 parcel records (99%) include year built.

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

Yes. 99% of Union 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 Union County?

Korzy tracks 1 data-center project in Union County: 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 Union County?

7 operable power plants in Union County total about 110 MW of nameplate capacity, mainly solar, natural gas and oil.

Which water systems serve Union County?

Service areas of about 10 community water systems cover about 49% of Union County, and sewer service areas cover about 20%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

Union County, NC parcel and infrastructure data API

Korzy has about 110,000 parcel records for Union County, North Carolina, with source updates through August 2026. Nearly every record carries owner names, values, land use and year built; 89% include last sale and 77% include building size. In and around the county the API also maps 1 data-center project; 7 power plants with about 110 MW of capacity, led by solar; and about 55 miles of active rail. Look up any parcel by address or coordinates, then check water, sewer and infrastructure context at the same point.

Get an API key Read the API docs

Parcel coverage in Union County

About 110,000 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	Nearly all · 99%
Assessed or market value	Nearly all · 99%
Year built	Nearly all · 99%
Building size	Most · 77%
Last sale	Most · 89%
Land use	Nearly all · 99%
Zoning	Not published

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 Union County records carry an owner name.

Infrastructure in and around Union County

Power plants

7 operable plants with about 110 MW of nameplate capacity; largest by capacity: solar, natural gas, oil. Proposed generators add about 10 MW.

Within 50 km: /v1/lookup section power; details: /v1/records/{id}

Substations and transmission

About 45 in-service substations, 2 rated 230 kV or higher.

About 260 miles of transmission lines: about 15 mi at under 100 kV; about 140 mi at 100–161 kV; about 40 mi at 220–287 kV; about 25 mi at 500 kV.

Water and sewer service

Service areas of about 10 community water systems cover about 49% of the county.

Sewer service areas of 8 systems cover about 20%.

At an address or point: /v1/lookup section utilities

Data-center projects

1 tracked project: 1 status not reported.

Within 10 km: /v1/lookup section datacenters

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 1%.

At an address or point: /v1/lookup section environment

Rail, ports and freight

About 55 miles of active rail, about 40 of it main line

Within 25 km: /v1/lookup section logistics

Example requests for Union 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 5114 ROGERS RD, MONROE, NC 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":"5114 ROGERS RD, MONROE, NC","sections":["utilities"]}' \
  https://api.korzy.co/v1/lookup

Python

import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "5114 ROGERS RD, MONROE, NC", "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": -80.64914023437899,
    "latitude": 35.03612750003945,
    "address": "5114 ROGERS RD, MONROE",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "37179-95fe02ace9117d0dc4a9",
        "korzy_id": "37179-95fe02ace9117d0dc4a9",
        "parcelid": "194182",
        "parceladdr": "5114 ROGERS RD",
        "parcelcity": "MONROE",
        "situs_zip": "28110",
        "statefp": "37",
        "geoid": "37179",
        "longitude": -80.64914023437899,
        "latitude": 35.03612750003945,
        "usedesc": "EXEMPT",
        "yearbuilt": 0,
        "bldgsqft": 230000,
        "building_count": 0,
        "taxacres": 1.7726,
        "totalvalue": 0,
        "land_value_usd": 0,
        "improvement_value_usd": 0,
        "saledate": "2004-01-28",
        "saleamt": 8890000,
        "updated": "2026-05-15"
      }
    ],
    "truncated": false
  },
  "sections": {
    "utilities": {
      "status": "ok",
      "data": {
        "water": [
          {
            "id": "utility:water:28939",
            "feature_id": "water:28939",
            "name": "UNION COUNTY WATER SYSTEM",
            "boundary_basis": "System Sourced"
          }
        ],
        "treatment_plants": [
          {
            "id": "utility:treatment:7983",
            "feature_id": "treatment:7983",
            "name": "OLDE SYCAMORE WWTP",
            "distance_km": 1.9378646046559858
          },
          {
            "id": "utility:treatment:7984",
            "feature_id": "treatment:7984",
            "name": "CROOKED CREEK WWTP",
            "distance_km": 3.8868476957276847
          },
          {
            "id": "utility:treatment:7985",
            "feature_id": "treatment:7985",
            "name": "TWELVE MILE CREEK WWTP",
            "distance_km": 13.851237978458537
          }
        ],
        "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 37179-95fe02ace9117d0dc4a9, 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":"37179-95fe02ace9117d0dc4a9"}],"fields":["identity","sale","owner"]}' \
  https://api.korzy.co/v1/enrich

3. 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/37179-95fe02ace9117d0dc4a9

JavaScript

const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("37179-95fe02ace9117d0dc4a9")}`, {
  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);

Union County data questions

How many parcels in Union County include year built?: About 110,000 of about 110,000 parcel records (99%) include year built.
Does the Korzy API return owner names for Union County parcels?: Yes. 99% of Union 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 Union County?: Korzy tracks 1 data-center project in Union County: 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 Union County?: 7 operable power plants in Union County total about 110 MW of nameplate capacity, mainly solar, natural gas and oil.
Which water systems serve Union County?: Service areas of about 10 community water systems cover about 49% of Union County, and sewer service areas cover about 20%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

More featured counties

Mecklenburg County, NCBorders Union County · about 430,000 parcels
Wake County, NCabout 440,000 parcels
Cumberland County, NCabout 140,000 parcels
Durham County, NCabout 130,000 parcels
Forsyth County, NCabout 170,000 parcels

All featured North Carolina counties

Build on Union 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.

Get an API key See pricing API reference Use cases for parcel and infrastructure data