Chittenden County, VT parcel and infrastructure data API
Korzy has about 48,000 parcel records for Chittenden County, Vermont, with source updates through October 2026. Nearly every record carries owner names, values and land use. In and around the county the API also maps 5 data-center projects (5 operating); about 25 power plants with about 200 MW of capacity, led by other fuels; and about 60 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.
Parcel coverage in Chittenden County
About 48,000 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 · 99% | |
| Owner name | Nearly all · 96% | |
| Assessed or market value | Nearly all · 96% | |
| Year built | Not published | |
| Building size | Not published | |
| Last sale | Not published | |
| Land use | Nearly all · 96% | |
| 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. 96% of Chittenden County records carry an owner name.
Infrastructure in and around Chittenden County
Power plants
About 25 operable plants with about 200 MW of nameplate capacity; largest by capacity: other fuels, oil, hydro. Proposed generators add about 15 MW.
Within 50 km: /v1/lookup section power; details: /v1/records/{id}
Substations and transmission
About 35 in-service substations.
About 140 miles of transmission lines: about 40 mi at under 100 kV; about 100 mi at 100–161 kV.
Water and sewer service
Service areas of about 55 community water systems cover about 18% of the county.
Sewer service areas of about 10 systems cover about 6%.
At an address or point: /v1/lookup section utilities
Data-center projects
5 tracked projects: 5 operating.
Within 10 km: /v1/lookup section datacenters
Grid capacity data
1 utility-published grid capacity layer cover parts of Chittenden County, including substation inventory.
Nearby records: /v1/lookup section grid
Flood zones and wetlands
Special flood hazard areas cover about 18% of the county on the current federal flood maps, published June 2026.
Mapped wetlands cover about 7%.
At an address or point: /v1/lookup section environment
Rail, ports and freight
- About 60 miles of active rail, about 55 of it main line
- About 40 miles of national freight network highway
Within 25 km: /v1/lookup section logistics
Example requests for Chittenden 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 15 LIME ROCK RD, South Burlington, VT 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":"15 LIME ROCK RD, South Burlington, VT","sections":["datacenters"]}' \
https://api.korzy.co/v1/lookupPython
import os
import requests
response = requests.post(
"https://api.korzy.co/v1/lookup",
json={"address": "15 LIME ROCK RD, South Burlington, VT", "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": -73.15838845614962,
"latitude": 44.4847549,
"address": "15 LIME ROCK RD, South Burlington",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "50007-cfb5ca760ce9003b13d6",
"korzy_id": "50007-cfb5ca760ce9003b13d6",
"parcelid": "600-188-12268",
"parceladdr": "15 LIME ROCK RD",
"parcelcity": "South Burlington",
"situs_zip": "05403",
"statefp": "50",
"geoid": "50007",
"longitude": -73.15838845614962,
"latitude": 44.4847549,
"usedesc": "1.02A COMM",
"land_use_code": "C",
"taxacres": 1.02,
"totalvalue": 451000,
"land_value_usd": 121600,
"improvement_value_usd": 329400,
"updated": "2026-10-28"
}
],
"truncated": false
},
"sections": {
"datacenters": {
"status": "ok",
"data": {
"radius_km": 10,
"projects": [
{
"id": "datacenter:dc_fd808f80a501864da4d6",
"project_id": "dc_fd808f80a501864da4d6",
"name": "Tech Vault Data Center",
"operator": "Tech Vault, Inc.",
"status": "operating",
"state": "VT",
"city": "South Burlington",
"address": "21 Gregory Drive, Suite 165",
"longitude": -73.1417505,
"latitude": 44.4541938,
"location_precision": "approximate",
"source_count": 1,
"source_date": "2026-10-11",
"mapped": true,
"distance_km": 3.645697651582412
},
{
"id": "datacenter:dc_909ce5744cfa5f68c946",
"project_id": "dc_909ce5744cfa5f68c946",
"name": "Vermont Advanced Computing Center (VACC), University of Vermont",
"operator": "University of Vermont",
"status": "operating",
"state": "VT",
"city": "South Burlington",
"longitude": -73.146839,
"latitude": 44.448637,
"location_precision": "approximate",
"source_count": 1,
"source_date": "2026-10-11",
"mapped": true,
"distance_km": 4.119382548879201
},
{
"id": "datacenter:dc_f9232dc7dc874f76d835",
"project_id": "dc_f9232dc7dc874f76d835",
"name": "Lightboard ★ Vermont (530 Community Drive carrier hotel)",
"operator": "Lightboard",
"status": "operating",
"state": "VT",
"city": "South Burlington",
"address": "530 Community Drive",
"longitude": -73.146839,
"latitude": 44.448637,
"location_precision": "approximate",
"source_count": 1,
"source_date": "2026-10-11",
"mapped": true,
"distance_km": 4.119382548879201
}
],
"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 50007-cfb5ca760ce9003b13d6, 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":"50007-cfb5ca760ce9003b13d6"}],"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 $KORZY_API_KEY" \
https://api.korzy.co/v1/records/50007-cfb5ca760ce9003b13d6JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("50007-cfb5ca760ce9003b13d6")}`, {
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);Chittenden County data questions
- How many parcels in Chittenden County include values?
- About 46,000 of about 48,000 parcel records (96%) include values.
- Does the Korzy API return owner names for Chittenden County parcels?
- Yes. 96% of Chittenden 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 Chittenden County?
- Korzy tracks 5 data-center projects in Chittenden County: 5 operating. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.
- How much power generation is in Chittenden County?
- About 25 operable power plants in Chittenden County total about 200 MW of nameplate capacity, mainly other fuels, oil and hydro.
- Which water systems serve Chittenden County?
- Service areas of about 55 community water systems cover about 18% of Chittenden County, and sewer service areas cover about 6%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.
Build on Chittenden 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.