Iroquois County

Parcel & Property Data

28,197Total Parcels

—Avg. Market Value

683,554Total Acres

About This Data

LandBrief holds 28,197 parcel records for Iroquois County, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.

Data from the Iroquois County assessor roll dated July 2025, loaded August 2026. See data sources for every county’s vintage.

Explore Iroquois County

Largest landownersWho holds the most land in Iroquois County, by total acreage.
Largest parcelsThe biggest individual tracts in the county, ranked by size.
Out-of-state ownersWho owns Iroquois County from somewhere else, and where they live.

Iroquois County by the Numbers

Median parcel size: 1.6 acres
measured from mapped boundaries
90th-percentile parcel: 80.5 acres
County land area: 715,133 acres
U.S. Census measurement
Communities: 28
45.4% of parcels outside any incorporated place
Out-of-state owners: 9.1% of parcels
by owner mailing address

Who Owns Iroquois County?

Share of the county’s 28,197 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.

Owner type	Share of parcels
Individuals	74.4%
Companies & organizations	11.2%
Trusts & estates	10.7%
Government	0.9%
Other / unclassified	2.8%

The largest owner on record is STATE OF ILLINOIS with 196 parcels — see the full landowner leaderboard.

Parcel Records (~28,197 total)

Showper page

Parcel ID	Owner	Address	City	Acreage
33-02-200-005	SRD INC	—	Unincorporated	587.26
35-18-100-001	DILLING-OTT LLC	—	Unincorporated	581.80
34-01-100-006	JOHNSON TRUSTEE MARY CAROLYN	—	Unincorporated	536.32
08-23-100-001	MARQUETTE NATL BK	456 E STATE RTE 116 ASHKUM IL 60911	Unincorporated	503.61
02-18-100-001	LEGRIS HERITAGE LLC	635 E 3400 NORTH RD	Chebanse	495.83
33-32-300-001	SPIROS JAMES D	2055 E 670 NORTH RD MILFORD IL 60953	Milford	479.84
12-28-400-003	US CORE FARMLAND FUND OP LP	—	Unincorporated	475.28
36-08-200-003	FIRST TRUST & SAVINGS BK	405 N 200 EAST RD LODA IL 60948	Loda	454.61
13-15-100-001	MUNOZ OSCAR	—	Unincorporated	440.00
06-35-100-001	FLECK AS TRUSTEE PAMELA J	—	Unincorporated	440.00

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All 28,197 parcels in Iroquois County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.

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Frequently Asked Questions

How many parcels are in Iroquois County?

The Iroquois County assessor roll on file records 28,197 parcels across 28 communities, with 45.4% lying outside any incorporated place.

Who owns the most land in Iroquois County?

STATE OF ILLINOIS holds 196 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Iroquois County?

Measured from mapped boundaries, the median parcel is 1.6 acres, and nine parcels in ten are under 80.5 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of Iroquois County is owned from out of state?

9.1% of parcels list an owner mailing address outside IL, per the county’s own records.

How much of Iroquois County is government-owned?

Government entities — federal, state, and local — hold 0.9% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the Iroquois County assessor roll dated July 2025. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.