Rockland County, NY parcel and infrastructure data API
Korzy has about 93,000 parcel records for Rockland County, New York, with source updates through January 2025. Nearly every record carries owner names, values and land use; 91% include year built and 91% include building size. In and around the county the API also maps 7 data-center projects (4 operating); 9 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.
Parcel coverage in Rockland County
About 93,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from January 2025. 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 · 98% | |
| Assessed or market value | Nearly all · 98% | |
| Year built | Most · 91% | |
| Building size | Most · 91% | |
| Last sale | Not published | |
| Land use | Nearly all · 98% | |
| 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. 98% of Rockland County records carry an owner name.
Infrastructure in and around Rockland County
Power plants
9 operable plants with about 1,300 MW of nameplate capacity; largest by capacity: natural gas, battery and pumped storage, solar.
Within 50 km: /v1/lookup section power; details: /v1/records/{id}
Substations and transmission
About 30 in-service substations, 5 rated 230 kV or higher.
About 150 miles of transmission lines: 8 mi at under 100 kV; about 10 mi at 100–161 kV; about 55 mi at 345 kV; 5 mi at 500 kV.
Water and sewer service
Service areas of about 20 community water systems cover about 86% of the county.
Sewer service areas of 8 systems cover about 63%.
At an address or point: /v1/lookup section utilities
Data-center projects
7 tracked projects: 4 operating, 3 status not reported. Reported operating capacity: about 25 MW. Reported planned capacity: about 90 MW.
Within 10 km: /v1/lookup section datacenters
Grid capacity data
3 utility-published grid capacity layers cover parts of Rockland County, including load headroom, substation inventory.
Nearby records: /v1/lookup section grid
Flood zones and wetlands
Special flood hazard areas cover about 16% of the county on the current federal flood maps, published October 2026.
Mapped wetlands cover about 3%.
At an address or point: /v1/lookup section environment
Rail, ports and freight
- About 45 miles of active rail, about 35 of it main line
- About 20 miles of national freight network highway
- 1 port area with reported cargo tonnage
Within 25 km: /v1/lookup section logistics
Example requests for Rockland 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 nearby data-center projects
/v1/lookup matches 62 OLD MIDDLETOWN RD NC, Clarkstown, NY and returns the parcel's korzy_id and record, plus the data-center projects within 10 km, nearest first. 2 credits.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"address":"62 OLD MIDDLETOWN RD NC, Clarkstown, NY","sections":["datacenters"]}' \
https://api.korzy.co/v1/lookupPython
import os
import requests
response = requests.post(
"https://api.korzy.co/v1/lookup",
json={"address": "62 OLD MIDDLETOWN RD NC, Clarkstown, NY", "sections": ["datacenters"]},
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"]["datacenters"]["status"])Production response (trimmed)
{
"location": {
"longitude": -74.00373171647662,
"latitude": 41.124434550000004,
"address": "62 OLD MIDDLETOWN RD NC, Clarkstown",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "36087-61a5c105f94c20b35652",
"korzy_id": "36087-61a5c105f94c20b35652",
"parcelid": "39208905101700020410000000",
"parceladdr": "62 OLD MIDDLETOWN RD NC",
"parcelcity": "Clarkstown",
"situs_zip": "10956",
"statefp": "36",
"geoid": "36087",
"longitude": -74.00373171647662,
"latitude": 41.124434550000004,
"usedesc": "School",
"land_use_code": "612",
"yearbuilt": 1960,
"bldgsqft": 29549,
"taxacres": 7.6,
"totalvalue": 419400,
"land_value_usd": 419400,
"assessed_value_usd": 2119200,
"market_value_usd": 2316030,
"updated": "2025-01-01"
}
],
"truncated": false
},
"sections": {
"datacenters": {
"status": "ok",
"data": {
"radius_km": 10,
"projects": [
{
"id": "datacenter:dc_a9c4a48b68f374e6f39f",
"project_id": "dc_a9c4a48b68f374e6f39f",
"name": "Unnamed data center",
"status": "unknown",
"state": "NY",
"city": "Orangeburg",
"address": "65 3rd Avenue",
"longitude": -73.971751178657,
"latitude": 41.05239225,
"location_precision": "footprint",
"source_count": 2,
"source_date": "2026-02-09",
"mapped": true,
"distance_km": 8.447223863558293
},
{
"id": "datacenter:dc_84cad11af5f8adb9450d",
"project_id": "dc_84cad11af5f8adb9450d",
"name": "JPMorgan Chase Data Center, Orangeburg",
"operator": "JPMorgan Chase",
"status": "operating",
"state": "NY",
"city": "Orangeburg",
"address": "140 Old Orangeburg Rd",
"longitude": -73.973952,
"latitude": 41.044286,
"location_precision": "approximate",
"source_count": 1,
"source_date": "2026-09-13",
"mapped": true,
"distance_km": 9.255027643318954
},
{
"id": "datacenter:dc_0ea66bea4fb306f83012",
"project_id": "dc_0ea66bea4fb306f83012",
"name": "DataBank LGA3 (Orangeburg Data Center Campus)",
"operator": "DataBank",
"status": "operating",
"state": "NY",
"city": "Orangeburg",
"address": "2000 Corporate Dr.",
"longitude": -73.98965097768007,
"latitude": 41.03999185,
"location_precision": "footprint",
"operational_mw": 20,
"planned_mw": 40,
"source_count": 3,
"source_date": "2026-10-09",
"mapped": true,
"distance_km": 9.463490551342769
}
],
"truncated": false,
"note": "Straight-line distance to the reported project point; inspect location_precision. Projects merge supported source matches, not every nearby building. Approximate locations do not identify a parcel. Reported IT load, facility power, planned capacity and estimates remain separate source claims. No record or unknown status does not establish absence or inactivity."
},
"provenance": [
{
"dataset": "datacenters",
"as_of": "2026-11-02",
"data_version": "20261102T123021962884Z"
}
]
}
},
"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 36087-61a5c105f94c20b35652, 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":"36087-61a5c105f94c20b35652"}],"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 $KORZY_API_KEY" \
https://api.korzy.co/v1/records/36087-61a5c105f94c20b35652JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("36087-61a5c105f94c20b35652")}`, {
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);Rockland County data questions
- How many parcels in Rockland County include year built?
- About 85,000 of about 93,000 parcel records (91%) include year built.
- Does the Korzy API return owner names for Rockland County parcels?
- Yes. 98% of Rockland 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 Rockland County?
- Korzy tracks 7 data-center projects in Rockland County: 4 operating and 3 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 Rockland County?
- 9 operable power plants in Rockland County total about 1,300 MW of nameplate capacity, mainly natural gas, battery and pumped storage and solar.
- Which water systems serve Rockland County?
- Service areas of about 20 community water systems cover about 86% of Rockland County, and sewer service areas cover about 63%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.
More featured counties
- Bergen County, NJBorders Rockland County · about 300,000 parcels
- Passaic County, NJBorders Rockland County · about 130,000 parcels
- Westchester County, NYBorders Rockland County · about 250,000 parcels
- Erie County, NYabout 360,000 parcels
- Niagara County, NYabout 86,000 parcels
- New York County, NYabout 180,000 parcels
Build on Rockland 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.