Alexander County
Parcel & Property Data
About This Data
LandBrief holds 7,952 parcel records for Alexander 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 Alexander County assessor roll dated July 2025, loaded August 2026. See data sources for every county’s vintage.
Explore Alexander County
Alexander County by the Numbers
- Median parcel size
- 0.43 acres
measured from mapped boundaries - 90th-percentile parcel
- 50.8 acres
- County land area
- 150,652 acres
U.S. Census measurement - Communities
- 12
33.0% of parcels outside any incorporated place - Out-of-state owners
- 17.3% of parcels
by owner mailing address
Who Owns Alexander County?
Share of the county’s 7,952 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 | 69.8% |
| Companies & organizations | 9.2% |
| Trusts & estates | 5.9% |
| Government | 13.2% |
| Other / unclassified | 1.9% |
The largest owner on record is STATE OF ILLINOIS DOT with 255 parcels — see the full landowner leaderboard.
Parcel Records (~7,952 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 11-06-300-001 | LAND BUMGARD ISLAND & TIMBER | — | Unincorporated | 905.55 |
| 03-31-100-001 | A U S | — | Unincorporated | 686.92 |
| 09-16-100-001 | STATE OF ILLINOIS DONR | — | Unincorporated | 668.16 |
| 02-05-100-001 | STATE OF ILLINOIS DONR | — | Unincorporated | 655.29 |
| 09-08-100-001 | STATE OF ILLINOIS DONR | — | Unincorporated | 640.00 |
| 02-13-100-001 | A U S | — | Unincorporated | 640.00 |
| 02-24-100-001 | A U S | — | Unincorporated | 640.00 |
| 02-36-100-001 | A U S | — | Unincorporated | 640.00 |
| 09-09-100-001 | STATE OF ILLINOIS DONR | — | Unincorporated | 640.00 |
| 03-22-100-001 | A U S | — | Unincorporated | 640.00 |
Download Alexander County parcel data
All 7,952 parcels in Alexander County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Alexander County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Alexander County?
The Alexander County assessor roll on file records 7,952 parcels across 12 communities, with 33.0% lying outside any incorporated place.
Who owns the most land in Alexander County?
STATE OF ILLINOIS DOT holds 255 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Alexander County?
Measured from mapped boundaries, the median parcel is 0.43 acres, and nine parcels in ten are under 50.8 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Alexander County is owned from out of state?
17.3% of parcels list an owner mailing address outside IL, per the county’s own records.
How much of Alexander County is government-owned?
Government entities — federal, state, and local — hold 13.2% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Alexander 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 (12)
7,952 parcels across 12 communities in Alexander County.