LaSalle County

Parcel & Property Data

69,151Total Parcels

—Avg. Market Value

724,582Total Acres (measured from parcel boundaries)

About This Data

LandBrief holds 69,151 parcel records for LaSalle 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 LaSalle County assessor roll dated July 2025, loaded August 2026. See data sources for every county’s vintage.

Explore LaSalle County

LaSalle County by the Numbers

Median parcel size: 0.34 acres
measured from mapped boundaries
90th-percentile parcel: 39.9 acres
County land area: 726,488 acres
U.S. Census measurement
Communities: 37
21.6% of parcels outside any incorporated place
Out-of-state owners: 4.3% of parcels
by owner mailing address

Who Owns LaSalle County?

Share of the county’s 69,151 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	75.4%
Companies & organizations	10.4%
Trusts & estates	11.6%
Government	2.3%
Other / unclassified	0.4%

The largest owner on record is CITY OF OTTAWA with 241 parcels — see the full landowner leaderboard.

Parcel Records (~69,151 total)

Showper page

Parcel ID	Owner	Address	City	Acreage
04-07-302-000	BYWATER BRIAN R	4628 E 18TH RD LELAND IL 60531	Leland	11.23 †
04-06-303-000	LUNDQUIST RICHARD / CYNTHIA	4780 E 18TH RD LELAND IL 60531	Leland	2.30 †
04-19-201-000	BABSON FARMS INC	E 18TH RD LELAND IL 60531	Unincorporated	76.70 †
04-29-310-000	RICKERT DUANE A / SHAWN M TTEE	4301 E 1950TH RD LELAND IL 60531	Leland	3.00 †
04-29-117-000	WHITTAKER DARRIN L	4359 E 1950TH RD LELAND IL 60531	Leland	5.09 †
04-29-116-000	WHITTAKER DARRIN L	4369 E 1950TH RD LELAND IL 60531	Leland	0.92 †
04-29-111-000	MC VICKER KEVIN E - LINDA J	4379 E 1950TH RD LELAND IL 60531	Leland	0.71 †
04-29-119-000	MC VICKER KEVIN/LINDA	4379 E 1950TH RD LELAND IL 60531	Leland	0.85 †
04-20-305-000	ROGERS DANIEL L / JANE STEPHENS-TTEES	4403 E 1950TH RD LELAND IL 60531	Leland	2.99 †
04-20-104-000	JUNGLES DONALD S TRUSTEE	4451 E 1950TH RD LELAND IL 60531	Leland	1.76 †

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All 69,151 parcels in LaSalle 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 LaSalle County?

The LaSalle County assessor roll on file records 69,151 parcels across 37 communities, with 21.6% lying outside any incorporated place.

Who owns the most land in LaSalle County?

CITY OF OTTAWA holds 241 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in LaSalle County?

Measured from mapped boundaries, the median parcel is 0.34 acres, and nine parcels in ten are under 39.9 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

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

4.3% of parcels list an owner mailing address outside IL, per the county’s own records.

How much of LaSalle County is government-owned?

Government entities — federal, state, and local — hold 2.3% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the LaSalle 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.