Whiteside County

Parcel & Property Data

36,747Total Parcels

—Avg. Market Value

431,391Total Acres (measured from parcel boundaries)

About This Data

LandBrief holds 36,747 parcel records for Whiteside 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 Whiteside County assessor roll dated July 2025, loaded August 2026. See data sources for every county’s vintage.

Explore Whiteside County

Whiteside County by the Numbers

Median parcel size: 0.50 acres
measured from mapped boundaries
90th-percentile parcel: 40.1 acres
County land area: 437,824 acres
U.S. Census measurement
Communities: 19
27.4% of parcels outside any incorporated place
Out-of-state owners: 4.4% of parcels
by owner mailing address

Who Owns Whiteside County?

Share of the county’s 36,747 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	78.3%
Companies & organizations	9.5%
Trusts & estates	10.2%
Government	0.9%
Other / unclassified	1.1%

The largest owner on record is WARKINS BETTY L TRUSTEE with 110 parcels — see the full landowner leaderboard.

Parcel Records (~36,747 total)

Showper page

Parcel ID	Owner	Address	City	Acreage
0624378001	BITLER THOMAS D & PAMELA R	202 N 2ND AVE	Albany	0.01 †
0624378001	BITLER THOMAS D & PAMELA R	202 N 2ND AVE	Albany	0.43 †
0624459009	ECKSTROM KEVYN R	511 N 3RD AVE	Albany	2.49 †
0624401001	ALBANY VILLAGE	101 N 4TH AVE	Albany	1.47 †
0624457003	LACY CHARLES L	403 N 6TH AVE	Albany	0.18 †
0624456004	ALLEN JOSEPH E	404 N 6TH AVE	Albany	0.37 †
0624432001	BRAY MICHAEL J & JULIANN L	1002 N BLUFF ST	Albany	0.17 †
0624437002	BRINKMEIER COLE D & KIELI	1007 N BLUFF ST	Albany	0.48 †
0624388002	GUINAN MARK	103 N BLUFF ST	Albany	0.13 †
0624384006	LEMKE PHILLIP L & KARLYN M	104 N BLUFF ST	Albany	0.16 †

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All 36,747 parcels in Whiteside 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 Whiteside County?

The Whiteside County assessor roll on file records 36,747 parcels across 19 communities, with 27.4% lying outside any incorporated place.

Who owns the most land in Whiteside County?

WARKINS BETTY L TRUSTEE holds 110 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in Whiteside County?

Measured from mapped boundaries, the median parcel is 0.50 acres, and nine parcels in ten are under 40.1 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

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

4.4% of parcels list an owner mailing address outside IL, per the county’s own records.

How much of Whiteside 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 Whiteside 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.

Browse by City (19)

36,747 parcels across 19 communities in Whiteside County.