Polk County, FL parcel and infrastructure data API

Parcel coverage in Polk County

About 430,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from August 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. 99% of Polk County records carry an owner name.

Infrastructure in and around Polk County

Example requests for Polk 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 2550 DUNDEE RD, WINTER HAVEN, FL 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=2550 DUNDEE RD, WINTER HAVEN, FL' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "2550 DUNDEE RD, WINTER HAVEN, FL"},
    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": "12105-1f36f5a3fe2fcd1abd8d",
      "address": "2550 DUNDEE RD",
      "city": "WINTER HAVEN",
      "postcode": "33884",
      "county": "POLK",
      "statefp": "12",
      "longitude": -81.68332232493074,
      "latitude": 28.0218941,
      "match_type": "exact",
      "parcelid": "12-105-262826000000014070",
      "parceladdr": "2550 DUNDEE RD",
      "parcelcity": "WINTER HAVEN",
      "situs_zip": "33884",
      "usedesc": "AUTO SALES,AUTO REPAIR AND STORAGE,AUTO SERVICE SHOPS,BODY AND FENDER SHOPS,COMMERCIAL GARAGES",
      "land_use_code": "027",
      "yearbuilt": 1984,
      "building_count": 2,
      "taxacres": 1.9466942148760331,
      "land_value_usd": 254391,
      "assessed_value_usd": 472954,
      "market_value_usd": 588799,
      "saledate": "2024-03-09",
      "updated": "2026-01-01",
      "geoid": "12105"
    }
  ],
  "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, 12105-1f36f5a3fe2fcd1abd8d, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-81.683322' \
  --data-urlencode 'latitude=28.021894' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-81.683322", "latitude": "28.021894", "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=-81.683322' \
  --data-urlencode 'latitude=28.021894' \
  https://api.korzy.co/api/utilities/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/utilities/context",
    params={"longitude": "-81.683322", "latitude": "28.021894"},
    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": -81.683322,
  "latitude": 28.021894,
  "matches": {
    "water": [
      {
        "feature_id": "water:40919",
        "name": "WINTER HAVEN WATER DEPARTMENT",
        "boundary_basis": "System Sourced"
      }
    ],
    "sewer": [
      {
        "feature_id": "sewer:5125",
        "name": "WINTER HAVEN WWTP#3",
        "boundary_basis": "Modeled"
      }
    ]
  },
  "nearby_treatment": [
    {
      "feature_id": "treatment:949",
      "name": "WINTER HAVEN WWTP #2",
      "distance_km": 5.674391914163603
    },
    {
      "feature_id": "treatment:950",
      "name": "WINTER HAVEN WWTP#3",
      "distance_km": 8.090518241950532
    }
  ]
}

Polk County data questions

How many parcels in Polk County include year built?

About 300,000 of about 430,000 parcel records (69%) include year built.

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

Yes. 99% of Polk 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 Polk County?

Korzy tracks 4 data-center projects in Polk County: 2 proposed, 1 operating and 1 status not reported. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Polk County?

About 30 operable power plants in Polk County total about 6,700 MW of nameplate capacity, mainly natural gas, battery and pumped storage and solar.

Which water systems serve Polk County?

Service areas of about 130 community water systems cover about 44% of Polk County, and sewer service areas cover about 34%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

• Hillsborough County, FLBorders Polk County · about 530,000 parcels
• Orange County, FLBorders Polk County · about 580,000 parcels
• Miami-Dade County, FLabout 920,000 parcels
• Palm Beach County, FLabout 690,000 parcels
• Broward County, FLabout 780,000 parcels

All featured Florida counties