How many parcels in Pima County include values?

About 450,000 of about 450,000 parcel records (99%) include values.

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

Yes. 99% of Pima 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 Pima County?

Korzy tracks 4 data-center projects in Pima County: 2 proposed, 1 under construction and 1 status not reported. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.

How much power generation is in Pima County?

About 35 operable power plants in Pima County total about 1,300 MW of nameplate capacity, mainly natural gas, solar and battery and pumped storage.

Which water systems serve Pima County?

Service areas of about 150 community water systems cover about 9% of Pima County, and sewer service areas cover about 3%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

Pima County, AZ parcel and infrastructure data API

Korzy has about 450,000 parcel records for Pima County, Arizona, 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 4 data-center projects (1 under construction); about 35 power plants with about 1,300 MW of capacity, led by natural gas; and about 180 miles of active rail. 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 Pima County

About 450,000 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 · 99%
Assessed or market value	Nearly all · 99%
Year built	Not published
Building size	Not published
Last sale	Not published
Land use	Nearly all · 99%
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. 99% of Pima County records carry an owner name.

Infrastructure in and around Pima County

Power plants

About 35 operable plants with about 1,300 MW of nameplate capacity; largest by capacity: natural gas, solar, battery and pumped storage. Proposed generators add about 200 MW.

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

Substations and transmission

About 55 in-service substations, 8 rated 230 kV or higher.

About 900 miles of transmission lines: about 45 mi at under 100 kV; about 610 mi at 100–161 kV; about 60 mi at 220–287 kV; about 150 mi at 345 kV.

Water and sewer service

Service areas of about 150 community water systems cover about 9% of the county.

Sewer service areas of 9 systems cover about 3%.

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

Data-center projects

4 tracked projects: 1 under construction, 2 proposed, 1 status not reported. Reported planned capacity: about 2,100 MW.

Within 10 km: /v1/lookup section datacenters

Flood zones and wetlands

Special flood hazard areas cover about 4% of the county on the current federal flood maps, published October 2026.

Mapped wetlands cover about 1%.

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

Rail, ports and freight

About 180 miles of active rail, about 120 of it main line
About 95 miles of national freight network highway
1 intermodal rail terminal

Within 25 km: /v1/lookup section logistics

Example requests for Pima 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 420 E 7TH ST, TUCSON, AZ 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":"420 E 7TH ST, TUCSON, AZ","sections":["utilities"]}' \
  https://api.korzy.co/v1/lookup

Python

import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "420 E 7TH ST, TUCSON, AZ", "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": -110.96518531518782,
    "latitude": 32.22623635,
    "address": "420 E 7TH ST, TUCSON",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "04019-276ac516cbe0ec6b271a",
        "korzy_id": "04019-276ac516cbe0ec6b271a",
        "parcelid": "117050880",
        "parceladdr": "420 E 7TH ST",
        "parcelcity": "TUCSON",
        "situs_zip": "85705",
        "statefp": "04",
        "geoid": "04019",
        "longitude": -110.96518531518782,
        "latitude": 32.22623635,
        "usedesc": "RETAIL STRIP CENTER                         ",
        "taxacres": 0.3052054,
        "totalvalue": 869975,
        "updated": "2026-10-30"
      }
    ],
    "truncated": false
  },
  "sections": {
    "utilities": {
      "status": "ok",
      "data": {
        "water": [
          {
            "id": "utility:water:6193",
            "feature_id": "water:6193",
            "name": "TUCSON CITY OF",
            "boundary_basis": "System Sourced"
          }
        ],
        "sewer": [
          {
            "id": "utility:sewer:11",
            "feature_id": "sewer:11",
            "name": "PCRWRD - Agua Nueva WRF",
            "boundary_basis": "Sourced"
          }
        ],
        "treatment_plants": [
          {
            "id": "utility:treatment:15024",
            "feature_id": "treatment:15024",
            "name": "PCRWRD - Agua Nueva WRF",
            "distance_km": 9.27953472615117
          },
          {
            "id": "utility:treatment:15011",
            "feature_id": "treatment:15011",
            "name": "Marana High School WWTP",
            "distance_km": 15.079892374508315
          },
          {
            "id": "utility:treatment:554",
            "feature_id": "treatment:554",
            "name": "PCRWRD Tres Rios Water Reclamation Facility",
            "distance_km": 15.503495331138375
          }
        ],
        "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 04019-276ac516cbe0ec6b271a, 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":"04019-276ac516cbe0ec6b271a"}],"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/04019-276ac516cbe0ec6b271a

JavaScript

const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("04019-276ac516cbe0ec6b271a")}`, {
  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);

Pima County data questions

How many parcels in Pima County include values?: About 450,000 of about 450,000 parcel records (99%) include values.
Does the Korzy API return owner names for Pima County parcels?: Yes. 99% of Pima 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 Pima County?: Korzy tracks 4 data-center projects in Pima County: 2 proposed, 1 under construction and 1 status not reported. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.
How much power generation is in Pima County?: About 35 operable power plants in Pima County total about 1,300 MW of nameplate capacity, mainly natural gas, solar and battery and pumped storage.
Which water systems serve Pima County?: Service areas of about 150 community water systems cover about 9% of Pima County, and sewer service areas cover about 3%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

More featured counties

Maricopa County, AZBorders Pima County · about 1.8 million parcels
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All featured Arizona counties

Build on Pima 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