Suffolk County, MA parcel and infrastructure data API

Parcel coverage in Suffolk County

About 200,000 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:

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

Infrastructure in and around Suffolk County

Example requests for Suffolk 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 15 STOUGHTON STREET, ROXBURY, 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=15 STOUGHTON STREET, ROXBURY, MA' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "15 STOUGHTON STREET, ROXBURY, 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": "25025-1f52190a2658b1750f85",
      "address": "15 STOUGHTON STREET",
      "city": "ROXBURY",
      "postcode": "02118",
      "county": "Suffolk",
      "statefp": "25",
      "longitude": -71.07223649800639,
      "latitude": 42.3369975,
      "match_type": "exact",
      "parcelid": "0801405040",
      "parceladdr": "15 STOUGHTON STREET",
      "parcelcity": "ROXBURY",
      "situs_zip": "02118",
      "usedesc": "MEDICAL OFFICE",
      "yearbuilt": 1910,
      "bldgsqft": 67782,
      "taxacres": 11823,
      "totalvalue": 24704600,
      "updated": "2026-11-03",
      "geoid": "25025"
    }
  ],
  "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, 25025-1f52190a2658b1750f85, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-71.072236' \
  --data-urlencode 'latitude=42.336998' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-71.072236", "latitude": "42.336998", "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=-71.072236' \
  --data-urlencode 'latitude=42.336998' \
  https://api.korzy.co/api/utilities/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/utilities/context",
    params={"longitude": "-71.072236", "latitude": "42.336998"},
    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": -71.072236,
  "latitude": 42.336998,
  "matches": {
    "water": [
      {
        "feature_id": "water:36548",
        "name": "BOSTON WATER AND SEWER COMMISSION (MWRA)",
        "boundary_basis": "System Sourced"
      }
    ],
    "sewer": [
      {
        "feature_id": "sewer:919",
        "name": "MWRA Deer Island WWTF",
        "boundary_basis": "Sourced"
      }
    ]
  },
  "nearby_treatment": [
    {
      "feature_id": "treatment:2098",
      "name": "MWRA Deer Island WWTF",
      "distance_km": 9.59727688518615
    },
    {
      "feature_id": "treatment:2084",
      "name": "Hull Sewerage Collection System and WPCF",
      "distance_km": 14.621530484924767
    }
  ]
}

Suffolk County data questions

How many parcels in Suffolk County include year built?

About 180,000 of about 200,000 parcel records (91%) include year built.

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

Suffolk 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 Suffolk County?

Korzy tracks 2 data-center projects in Suffolk County: 2 operating. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Suffolk County?

About 10 operable power plants in Suffolk County total about 270 MW of nameplate capacity, mainly oil, natural gas and other fuels.

Which water systems serve Suffolk County?

Service areas of about 15 community water systems cover about 90% of Suffolk County, and sewer service areas cover about 94%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

• Essex County, MABorders Suffolk County · about 270,000 parcels
• Middlesex County, MABorders Suffolk County · about 530,000 parcels
• Norfolk County, MABorders Suffolk County · about 250,000 parcels
• Worcester County, MAabout 320,000 parcels
• Hampden County, MAabout 160,000 parcels

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