Norfolk County, MA parcel and infrastructure data API

Parcel coverage in Norfolk County

About 250,000 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:

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

Infrastructure in and around Norfolk County

Example requests for Norfolk 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 535 565 UNIVERSITY AV, NORWOOD, MA 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=535 565 UNIVERSITY AV, NORWOOD, MA' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "535 565 UNIVERSITY AV, NORWOOD, MA"},
    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"])

{
  "results": [
    {
      "korzy_id": "25021-08fb3d36f23d0e99cf02",
      "address": "535 565 UNIVERSITY AV",
      "city": "NORWOOD",
      "postcode": "02062",
      "county": "Norfolk",
      "statefp": "25",
      "longitude": -71.16291004284899,
      "latitude": 42.19954735,
      "match_type": "exact",
      "parcelid": "22 14 3",
      "parceladdr": "535 565 UNIVERSITY AV",
      "parcelcity": "NORWOOD",
      "situs_zip": "02062",
      "usedesc": "INDUSTRIAL",
      "yearbuilt": 1973,
      "bldgsqft": 105780,
      "taxacres": 4.86,
      "totalvalue": 7761600,
      "saledate": "2016-04-27",
      "saleamt": 6400000,
      "updated": "2026-11-03",
      "geoid": "25021"
    }
  ],
  "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, 25021-08fb3d36f23d0e99cf02, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-71.16291' \
  --data-urlencode 'latitude=42.199547' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-71.16291", "latitude": "42.199547", "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 water and sewer service

/api/utilities/context returns the water and sewer service areas at the point and the nearest treatment plants. 1 credit.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-71.16291' \
  --data-urlencode 'latitude=42.199547' \
  https://api.korzy.co/api/utilities/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/utilities/context",
    params={"longitude": "-71.16291", "latitude": "42.199547"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
matches = response.json()["matches"]
print([area["name"] for area in matches["water"]])

{
  "longitude": -71.16291,
  "latitude": 42.199547,
  "matches": {
    "water": [],
    "sewer": [
      {
        "feature_id": "sewer:919",
        "name": "MWRA Deer Island WWTF",
        "boundary_basis": "Sourced"
      }
    ]
  },
  "nearby_treatment": [
    {
      "feature_id": "treatment:2130",
      "name": "Medfield Sewerage Collection System and WWTF",
      "distance_km": 14.213857580833432
    },
    {
      "feature_id": "treatment:15585",
      "name": "Easton Sewerage Collection System and WWTF",
      "distance_km": 15.376873165794741
    }
  ]
}

Norfolk County data questions

How many parcels in Norfolk County include year built?

About 230,000 of about 250,000 parcel records (92%) include year built.

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

Norfolk 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 Norfolk County?

Korzy tracks 1 data-center project in Norfolk County: 1 operating. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Norfolk County?

About 35 operable power plants in Norfolk County total about 2,400 MW of nameplate capacity, mainly natural gas, battery and pumped storage and oil.

Which water systems serve Norfolk County?

Service areas of about 50 community water systems cover about 70% of Norfolk County, and sewer service areas cover about 45%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

• Middlesex County, MABorders Norfolk County · about 530,000 parcels
• Suffolk County, MABorders Norfolk County · about 200,000 parcels
• Worcester County, MABorders Norfolk County · about 320,000 parcels
• Providence County, RIBorders Norfolk County · about 220,000 parcels
• Essex County, MAabout 270,000 parcels
• Hampden County, MAabout 160,000 parcels

All featured Massachusetts counties