Multnomah County, OR parcel and infrastructure data API

Parcel coverage in Multnomah County

About 280,000 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:

Owner name and mailing address are returned with include_owner=true, which doubles a request's cost: a parcel record costs 2 credits instead of 1. 1% of Multnomah County records carry an owner name.

Infrastructure in and around Multnomah County

Example requests for Multnomah 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 5330 NE COURIER CT, PORTLAND, OR 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=5330 NE COURIER CT, PORTLAND, OR' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "5330 NE COURIER CT, PORTLAND, OR"},
    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": "41051-d25ad9864df0f9bdbba9",
      "address": "5330 NE COURIER CT",
      "city": "PORTLAND",
      "postcode": "97218",
      "county": "Multnomah",
      "statefp": "41",
      "longitude": -122.60899649194997,
      "latitude": 45.5819166,
      "match_type": "exact",
      "parcelid": "1N2E07 -00800",
      "parceladdr": "5330 NE COURIER CT",
      "parcelcity": "PORTLAND",
      "situs_zip": "97218",
      "usedesc": "COM",
      "land_use_code": "Comm",
      "yearbuilt": 1991,
      "bldgsqft": 88141,
      "taxacres": 5.78000459,
      "totalvalue": 5211340,
      "land_value_usd": 3046500,
      "improvement_value_usd": 8233890,
      "assessed_value_usd": 3667360,
      "saleamt": 0,
      "updated": "2026-11-03",
      "geoid": "41051"
    }
  ],
  "truncated": false
}

With include_owner=true (2 credits) the record adds owner fields, shown here as placeholders:

{
  "owner_name": "EXAMPLE HOLDINGS LLC",
  "owner_mailing_address": "100 EXAMPLE ST, SAMPLE CITY, ST 00000"
}

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, 41051-d25ad9864df0f9bdbba9, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-122.608996' \
  --data-urlencode 'latitude=45.581917' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-122.608996", "latitude": "45.581917", "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=-122.608996' \
  --data-urlencode 'latitude=45.581917' \
  --data-urlencode 'radius_km=10' \
  --data-urlencode 'limit=3' \
  https://api.korzy.co/api/datacenters/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/datacenters/context",
    params={"longitude": "-122.608996", "latitude": "45.581917", "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"])

{
  "projects": [
    {
      "project_id": "dc_eff4b2b5f333d35145aa",
      "name": "H5 DC - Portland",
      "operator": "H5 Data Centers",
      "status": "unknown",
      "city": "Portland",
      "state": "OR",
      "longitude": -122.6837652,
      "latitude": 45.5316902,
      "location_precision": "exact",
      "distance_km": 8.067294975044566
    },
    {
      "project_id": "dc_76e498cd2711c351893b",
      "name": "H5 Data Centers Portland",
      "operator": "H5 Data Centers",
      "status": "operating",
      "city": "Portland",
      "state": "OR",
      "longitude": -122.6839805,
      "latitude": 45.5318147,
      "location_precision": "exact",
      "operational_mw": 2,
      "distance_km": 8.069831567506576
    },
    {
      "project_id": "dc_19cbeff13d0894232478",
      "name": "Pittock Block (PTOR1)",
      "operator": "1547 Critical Systems Realty",
      "status": "operating",
      "city": "Portland",
      "state": "OR",
      "longitude": -122.680704,
      "latitude": 45.5215436,
      "location_precision": "exact",
      "operational_mw": 8,
      "distance_km": 8.731789842441856
    }
  ],
  "radius_km": 10,
  "limit": 3,
  "truncated": true
}

Multnomah County data questions

How many parcels in Multnomah County include year built?

About 280,000 of about 280,000 parcel records (100%) include year built.

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

Yes. 1% of Multnomah County parcel records carry an owner name. Add include_owner=true to a point, search or parcel-record request; it doubles the request's cost, so a single parcel record costs 2 credits.

How many data-center projects are in Multnomah County?

Korzy tracks 7 data-center projects in Multnomah County: 4 status not reported and 3 operating. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Multnomah County?

6 operable power plants in Multnomah County total about 1,600 MW of nameplate capacity, mainly hydro, battery and pumped storage and solar.

Which water systems serve Multnomah County?

Service areas of about 35 community water systems cover about 40% of Multnomah County, and sewer service areas cover about 42%. /api/utilities/context returns the water and sewer matches at a point.

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