How many parcels in Douglas County include year built?

About 200,000 of about 220,000 parcel records (89%) include year built.

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

Yes. 99% of Douglas 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 Douglas County?

Korzy tracks 9 data-center projects in Douglas County: 5 status not reported and 4 operating. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Douglas County?

4 operable power plants in Douglas County total about 940 MW of nameplate capacity, mainly natural gas, coal and oil.

Which water systems serve Douglas County?

Service areas of about 15 community water systems cover about 52% of Douglas County, and sewer service areas cover about 32%. /api/utilities/context returns the water and sewer matches at a point.

Douglas County, NE parcel and infrastructure data API

Korzy has about 220,000 parcel records for Douglas County, Nebraska, with source updates through November 2026. Nearly every record carries owner names, values, last sale, land use and building size; 89% include year built. In and around the county the API also maps 9 data-center projects (4 operating); 4 power plants with about 940 MW of capacity, led by natural gas; and about 140 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.

Get an API key Read the API docs

Parcel coverage in Douglas County

About 220,000 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 /api/parcel-record. Share of records with each field:

Field	Coverage	Share
Situs address	Nearly all · 96%
Owner name	Nearly all · 99%
Assessed or market value	Nearly all · 99%
Year built	Most · 89%
Building size	Nearly all · 100%
Last sale	Nearly all · 99%
Land use	Nearly all · 99%
Zoning	Nearly all · 99%

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. 99% of Douglas County records carry an owner name.

Infrastructure in and around Douglas County

Power plants

4 operable plants with about 940 MW of nameplate capacity; largest by capacity: natural gas, coal, oil.

Plant details: /api/power/plants/{plant_id}

Substations and transmission

About 45 in-service substations, 1 rated 230 kV or higher.

About 260 miles of transmission lines: about 95 mi at under 100 kV; about 120 mi at 100–161 kV; about 35 mi at 345 kV.

Water and sewer service

Service areas of about 15 community water systems cover about 52% of the county.

Sewer service areas of 5 systems cover about 32%.

At a point: /api/utilities/context

Data-center projects

9 tracked projects: 4 operating, 5 status not reported. Reported operating capacity: about 240 MW. Reported planned capacity: about 470 MW.

Within 10 km of a point: /api/datacenters/context

Flood zones and wetlands

Special flood hazard areas cover about 27% of the county on the current federal flood maps, published September 2026.

Rail, ports and freight

About 140 miles of active rail, about 60 of it main line
About 35 miles of national freight network highway
1 intermodal rail terminal

Within 25 km of a point: /api/logistics/context

Example requests for Douglas 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 10110 NICHOLAS ST, OMAHA, NE 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=10110 NICHOLAS ST, OMAHA, NE' \
  https://api.korzy.co/api/search

Python

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "10110 NICHOLAS ST, OMAHA, NE"},
    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": "31055-4e354a08adc218a8d882",
      "address": "10110 NICHOLAS ST",
      "city": "OMAHA",
      "postcode": "68114",
      "county": "Douglas",
      "statefp": "31",
      "longitude": -96.0700137915756,
      "latitude": 41.269409550000006,
      "match_type": "exact",
      "parcelid": "2531224642",
      "parceladdr": "10110 NICHOLAS ST",
      "parcelcity": "OMAHA",
      "situs_zip": "68114",
      "usedesc": "Commercial",
      "land_use_code": "C",
      "zoning_code": "03",
      "yearbuilt": 2000,
      "bldgsqft": 28800,
      "building_count": 1,
      "taxacres": 1.71,
      "totalvalue": 2276200,
      "land_value_usd": 538200,
      "improvement_value_usd": 1738000,
      "assessed_value_usd": 2619500,
      "saledate": "1999-12-22",
      "saleamt": 67400,
      "updated": "2026-11-03",
      "geoid": "31055"
    }
  ],
  "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, 31055-4e354a08adc218a8d882, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-96.070014' \
  --data-urlencode 'latitude=41.26941' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

JavaScript

const params = new URLSearchParams({"longitude": "-96.070014", "latitude": "41.26941", "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=-96.070014' \
  --data-urlencode 'latitude=41.26941' \
  --data-urlencode 'radius_km=10' \
  --data-urlencode 'limit=3' \
  https://api.korzy.co/api/datacenters/context

Python

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/datacenters/context",
    params={"longitude": "-96.070014", "latitude": "41.26941", "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_da17a42e9276c192113f",
      "name": "Union Pacific Jack Koraleski Technology, Research & Development Center",
      "operator": "Union Pacific Railroad",
      "status": "unknown",
      "city": "Omaha",
      "state": "NE",
      "longitude": -96.05034843131938,
      "latitude": 41.31800825,
      "location_precision": "footprint",
      "distance_km": 5.64812355546407
    },
    {
      "project_id": "dc_5a63715acd408aa3ed5b",
      "name": "Scott Data Center",
      "operator": "Scott Data",
      "status": "operating",
      "city": "Omaha",
      "state": "NE",
      "longitude": -96.0093,
      "latitude": 41.2406,
      "location_precision": "approximate",
      "distance_km": 6.00181940125626
    },
    {
      "project_id": "dc_0b6c25ef42e12b91b214",
      "name": "Google Omaha Data Center",
      "operator": "Google",
      "status": "operating",
      "city": "Omaha",
      "state": "NE",
      "longitude": -96.0888765,
      "latitude": 41.341728,
      "location_precision": "footprint",
      "operational_mw": 237,
      "planned_mw": 474,
      "distance_km": 8.194306432565808
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Douglas County data questions

How many parcels in Douglas County include year built?: About 200,000 of about 220,000 parcel records (89%) include year built.
Does the Korzy API return owner names for Douglas County parcels?: Yes. 99% of Douglas 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 Douglas County?: Korzy tracks 9 data-center projects in Douglas County: 5 status not reported and 4 operating. /api/datacenters/context lists projects within 10 km of any point.
How much power generation is in Douglas County?: 4 operable power plants in Douglas County total about 940 MW of nameplate capacity, mainly natural gas, coal and oil.
Which water systems serve Douglas County?: Service areas of about 15 community water systems cover about 52% of Douglas County, and sewer service areas cover about 32%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

Pottawattamie County, IABorders Douglas County · about 54,000 parcels
Sarpy County, NEBorders Douglas County · about 77,000 parcels
Lancaster County, NEabout 120,000 parcels

All featured Nebraska counties

Build on Douglas 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.

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