How many parcels in Marion County include year built?

About 91,000 of about 120,000 parcel records (76%) include year built.

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

Yes. 75% of Marion 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 Marion County?

Korzy tracks 3 data-center projects in Marion County: 2 status not reported and 1 proposed. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.

How much power generation is in Marion County?

About 30 operable power plants in Marion County total about 180 MW of nameplate capacity, mainly hydro, solar and other fuels.

Which water systems serve Marion County?

Service areas of about 70 community water systems cover about 7% of Marion County, and sewer service areas cover about 17%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

Marion County, OR parcel and infrastructure data API

Korzy has about 120,000 parcel records for Marion County, Oregon, with source updates through October 2026. Nearly every record carries values and land use; 90% include last sale and 90% include building size. In and around the county the API also maps 3 data-center projects; 1 port with reported cargo; and about 30 power plants with about 180 MW of capacity, led by hydro. Look up any parcel by address or coordinates, then check water, sewer and infrastructure context at the same point.

Get an API key Read the API docs

Parcel coverage in Marion County

About 120,000 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 · 98%
Owner name	Most · 75%
Assessed or market value	Nearly all · 95%
Year built	Most · 76%
Building size	Most · 90%
Last sale	Most · 90%
Land use	Nearly all · 97%
Zoning	Many · 74%

Owner name and mailing address are returned by /v1/enrich with the owner group, at 2 credits per parcel instead of 1 credit. 75% of Marion County records carry an owner name.

Infrastructure in and around Marion County

Power plants

About 30 operable plants with about 180 MW of nameplate capacity; largest by capacity: hydro, solar, other fuels.

Within 50 km: /v1/lookup section power; details: /v1/records/{id}

Substations and transmission

About 55 in-service substations, 7 rated 230 kV or higher.

About 520 miles of transmission lines: about 60 mi at under 100 kV; about 140 mi at 100–161 kV; about 240 mi at 220–287 kV; about 80 mi at 500 kV.

Water and sewer service

Service areas of about 70 community water systems cover about 7% of the county.

Sewer service areas of about 15 systems cover about 17%.

At an address or point: /v1/lookup section utilities

Data-center projects

3 tracked projects: 1 proposed, 2 status not reported.

Within 10 km: /v1/lookup section datacenters

Flood zones and wetlands

Special flood hazard areas cover about 7% of the county on the current federal flood maps, published September 2026.

Mapped wetlands cover about 1%.

At an address or point: /v1/lookup section environment

Rail, ports and freight

About 150 miles of active rail, about 120 of it main line
About 40 miles of national freight network highway
1 port area with reported cargo tonnage

Within 25 km: /v1/lookup section logistics

Example requests for Marion 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 its water and sewer service

/v1/lookup matches 2470 LANCASTER DR NE, SALEM, OR and returns the parcel's korzy_id and record, plus the water and sewer service areas at the parcel and the nearest treatment plants. 2 credits.

curl --fail-with-body -sS \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"address":"2470 LANCASTER DR NE, SALEM, OR","sections":["utilities"]}' \
  https://api.korzy.co/v1/lookup

Python

import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "2470 LANCASTER DR NE, SALEM, OR", "sections": ["utilities"]},
    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"]["utilities"]["status"])

Production response (trimmed)

{
  "location": {
    "longitude": -122.98182505527994,
    "latitude": 44.9591493002099,
    "address": "2470 LANCASTER DR NE, SALEM",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "41047-6b13097fbd914fb6f22f",
        "korzy_id": "41047-6b13097fbd914fb6f22f",
        "parcelid": "072W18CA00900",
        "parceladdr": "2470 LANCASTER DR NE",
        "parcelcity": "SALEM",
        "situs_zip": "97305",
        "statefp": "41",
        "geoid": "41047",
        "longitude": -122.98182505527994,
        "latitude": 44.9591493002099,
        "usedesc": "SCHOOLS - PUBLIC & PRIVATE IMPROVED",
        "land_use_code": "921",
        "zoning_code": "MU-III",
        "yearbuilt": 2011,
        "bldgsqft": 9318,
        "taxacres": 2.97,
        "totalvalue": 1394070,
        "land_value_usd": 332790,
        "improvement_value_usd": 1075720,
        "assessed_value_usd": 0,
        "market_value_usd": 1408510,
        "saledate": "2002-01-14",
        "saleamt": 2800000,
        "updated": "2026-10-25"
      }
    ],
    "truncated": false
  },
  "sections": {
    "utilities": {
      "status": "ok",
      "data": {
        "water": [
          {
            "id": "utility:water:884",
            "feature_id": "water:884",
            "name": "SALEM PUBLIC WORKS",
            "boundary_basis": "System Sourced"
          }
        ],
        "sewer": [
          {
            "id": "utility:sewer:13246",
            "feature_id": "sewer:13246",
            "name": "SALEM WILLOW LAKE STP",
            "boundary_basis": "Modeled"
          }
        ],
        "treatment_plants": [
          {
            "id": "utility:treatment:8218",
            "feature_id": "treatment:8218",
            "name": "SALEM WILLOW LAKE STP",
            "distance_km": 7.680552699380852
          },
          {
            "id": "utility:treatment:8262",
            "feature_id": "treatment:8262",
            "name": "BROOKS SEWAGE TREATMENT PLANT",
            "distance_km": 9.999924916000706
          },
          {
            "id": "utility:treatment:8214",
            "feature_id": "treatment:8214",
            "name": "AUMSVILLE STP",
            "distance_km": 14.394271521377856
          }
        ],
        "truncated": {
          "water": false,
          "sewer": false
        }
      },
      "provenance": [
        {
          "dataset": "water",
          "data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
        },
        {
          "dataset": "sewer",
          "data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
        },
        {
          "dataset": "treatment",
          "data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
        }
      ]
    }
  },
  "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 41047-6b13097fbd914fb6f22f, 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":"41047-6b13097fbd914fb6f22f"}],"fields":["identity","sale","owner"]}' \
  https://api.korzy.co/v1/enrich

3. 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/41047-6b13097fbd914fb6f22f

JavaScript

const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("41047-6b13097fbd914fb6f22f")}`, {
  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);

Marion County data questions

How many parcels in Marion County include year built?: About 91,000 of about 120,000 parcel records (76%) include year built.
Does the Korzy API return owner names for Marion County parcels?: Yes. 75% of Marion 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 Marion County?: Korzy tracks 3 data-center projects in Marion County: 2 status not reported and 1 proposed. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.
How much power generation is in Marion County?: About 30 operable power plants in Marion County total about 180 MW of nameplate capacity, mainly hydro, solar and other fuels.
Which water systems serve Marion County?: Service areas of about 70 community water systems cover about 7% of Marion County, and sewer service areas cover about 17%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

More featured counties

Clackamas County, ORBorders Marion County · about 190,000 parcels
Washington County, ORabout 190,000 parcels
Multnomah County, ORabout 280,000 parcels
Umatilla County, ORabout 40,000 parcels

All featured Oregon counties

Build on Marion 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.

Get an API key See pricing API reference Use cases for parcel and infrastructure data