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Hudson County, NJ parcel and infrastructure data API

Korzy has about 150,000 parcel records for Hudson County, New Jersey, with source updates through August 2026. Nearly every record carries values, last sale and land use; 85% include year built. In and around the county the API also maps about 20 data-center projects (15 operating); about 20 power plants with about 1,300 MW of capacity, led by natural gas; and 1 port with reported cargo. Look up any parcel by address or coordinates, then check nearby data-center projects, utilities and grid context at the same point.

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Parcel coverage in Hudson County

About 150,000 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 /api/parcel-record. Share of records with each field:

FieldCoverageShare
Situs addressNearly all · 97%
Owner nameNot published
Assessed or market valueNearly all · 97%
Year builtMost · 85%
Building sizeNot published
Last saleNearly all · 97%
Land useNearly all · 95%
ZoningNot published

Hudson County records do not include owner names. See pricing for credit costs.

Infrastructure in and around Hudson County

Power plants

About 20 operable plants with about 1,300 MW of nameplate capacity; largest by capacity: natural gas, solar, wind. Proposed generators add 2 MW.

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

Substations and transmission

About 25 in-service substations, 9 rated 230 kV or higher.

About 70 miles of transmission lines: 2 mi at 100–161 kV; about 25 mi at 220–287 kV; about 25 mi at 345 kV.

Water and sewer service

Service areas of about 10 community water systems cover about 90% of the county.

Sewer service areas of 6 systems cover about 84%.

At a point: /api/utilities/context

Data-center projects

About 20 tracked projects: 15 operating, 1 proposed, 4 status not reported. Reported operating capacity: about 80 MW.

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

Grid capacity data

1 utility-published grid capacity layer cover parts of Hudson County, including capacity bands.

Sources and dates: /api/grid/capacity/summary

Flood zones and wetlands

Special flood hazard areas cover about 45% of the county on the current federal flood maps, published September 2026.

Mapped wetlands cover about 5%.

Rail, ports and freight

  • About 200 miles of active rail, about 55 of it main line
  • About 20 miles of national freight network highway
  • 1 port area with reported cargo tonnage
  • 4 intermodal rail terminals

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

Example requests for Hudson 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 33 HANCOCK AVE., NJ 07458 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=33 HANCOCK AVE., NJ 07458' \
  https://api.korzy.co/api/search
Python
import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "33 HANCOCK AVE., NJ 07458"},
    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": "34017-3021db0d03314abbfaf7",
      "address": "33 HANCOCK AVE.",
      "postcode": "07458",
      "county": "Hudson",
      "statefp": "34",
      "longitude": -74.0489494914363,
      "latitude": 40.74373487091155,
      "match_type": "exact",
      "parcelid": "0906 4405 23",
      "parceladdr": "33 HANCOCK AVE.",
      "situs_zip": "07458",
      "land_use_code": "4C",
      "yearbuilt": 1885,
      "taxacres": 0.0574,
      "totalvalue": 980000,
      "land_value_usd": 270000,
      "improvement_value_usd": 710000,
      "saledate": "2017-08-21",
      "saleamt": 100,
      "updated": "2025-10-29",
      "geoid": "34017"
    }
  ],
  "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, 34017-3021db0d03314abbfaf7, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-74.048949' \
  --data-urlencode 'latitude=40.743735' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point
JavaScript
const params = new URLSearchParams({"longitude": "-74.048949", "latitude": "40.743735", "limit": "5"});
const response = await fetch(`https://api.korzy.co/api/query/point?${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=-74.048949' \
  --data-urlencode 'latitude=40.743735' \
  --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": "-74.048949", "latitude": "40.743735", "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_a70d7abc8fe8739c2cd3",
      "name": "Cyxtera (Digital Realty Trust) Citibank Data Center",
      "operator": "Cyxtera",
      "status": "unknown",
      "city": "Weehawken",
      "state": "NJ",
      "longitude": -74.02574169622213,
      "latitude": 40.76074645,
      "location_precision": "footprint",
      "distance_km": 2.7202180070373227
    },
    {
      "project_id": "dc_726fb0fe25dd165ac84d",
      "name": "Centersquare EWR2 (Weehawken)",
      "operator": "Centersquare",
      "status": "operating",
      "city": "Weehawken",
      "state": "NJ",
      "longitude": -74.0260271,
      "latitude": 40.7615218,
      "location_precision": "approximate",
      "operational_mw": 45.7,
      "distance_km": 2.7640057166768597
    },
    {
      "project_id": "dc_13b9984deb8b2355c6e5",
      "name": "Digital Realty New York EWR10",
      "operator": "Digital Realty",
      "status": "operating",
      "city": "Weehawken",
      "state": "NJ",
      "longitude": -74.025027622146,
      "latitude": 40.76184015,
      "location_precision": "footprint",
      "distance_km": 2.8483650905238727
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Hudson County data questions

How many parcels in Hudson County include year built?
About 130,000 of about 150,000 parcel records (85%) include year built.
Does the Korzy API return owner names for Hudson County parcels?
Hudson 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 Hudson County?
Korzy tracks about 20 data-center projects in Hudson County: 15 operating, 4 status not reported and 1 proposed. /api/datacenters/context lists projects within 10 km of any point.
How much power generation is in Hudson County?
About 20 operable power plants in Hudson County total about 1,300 MW of nameplate capacity, mainly natural gas, solar and wind.
Which water systems serve Hudson County?
Service areas of about 10 community water systems cover about 90% of Hudson County, and sewer service areas cover about 84%. /api/utilities/context returns the water and sewer matches at a point.

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Build on Hudson 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 keySee pricingAPI referenceUse cases for parcel and infrastructure data