Monroe County
Parcel & Property Data
About This Data
LandBrief holds 19,546 parcel records for Monroe 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 Monroe County assessor roll dated July 2025, loaded August 2026. See data sources for every county’s vintage.
Explore Monroe County
Monroe County by the Numbers
- Median parcel size
- 0.85 acres
measured from mapped boundaries - 90th-percentile parcel
- 40 acres
- County land area
- 246,592 acres
U.S. Census measurement - Communities
- 11
31.3% of parcels outside any incorporated place - Out-of-state owners
- 4.0% of parcels
by owner mailing address
Who Owns Monroe County?
Share of the county’s 19,546 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 | 65.2% |
| Companies & organizations | 9.3% |
| Trusts & estates | 21.7% |
| Government | 2.2% |
| Other / unclassified | 1.6% |
The largest owner on record is VILLAGE OF VALMEYER with 131 parcels — see the full landowner leaderboard.
Parcel Records (~19,546 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 13-30-100-001-000 | STATE OF ILLINOIS DEPT OF NATURAL RESOURCES | RED BUD, IL 62278 | Unincorporated | 500.00 |
| 09-03-200-001-000 | VILLAGE OF VALMEYER | VALMEYER, IL 62295 | Valmeyer | 483.06 |
| 09-06-300-001-000 | VALENTINE KENNETH W ETAL | VALMEYER, IL 62295 | Unincorporated | 452.00 |
| 15-27-200-001-000 | STATE OF ILLINOIS DEPT OF NATURAL RESOURCES | 2508 BLUFF ROAD~PRAIRIE DU ROCHER, IL 62277 | Unincorporated | 400.53 |
| 09-11-300-001-000 | SOUTHERN ILL RESEARCH | WATERLOO, IL 62298 | Unincorporated | 400.00 |
| 11-03-100-001-000 | ROCKHOUSE LLC | 6104 STATE ROUTE 156~WATERLOO, IL 62298 | Unincorporated | 383.29 |
| 15-26-400-001-000 | SCHAFFNER HERBERT H TRUST | 4352 HELLER DRIVE~FULTS, IL 62244 | Fults | 380.47 |
| 16-07-300-001-000 | CLIFFTOP NFP | 3325 G ROAD~FULTS, IL 62244 | Unincorporated | 380.14 |
| 16-10-300-001-000 | FREES FARMS INC | 7451 SOUTH FORK ROAD~RED BUD, IL 62278 | Unincorporated | 360.00 |
| 03-12-200-002-000 | J & M TWO RIVERS FARM CORP | 10906 LEVEE ROAD~COLUMBIA, IL 62236 | Columbia | 338.18 |
Download Monroe County parcel data
All 19,546 parcels in Monroe County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Monroe County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Monroe County?
The Monroe County assessor roll on file records 19,546 parcels across 11 communities, with 31.3% lying outside any incorporated place.
Who owns the most land in Monroe County?
VILLAGE OF VALMEYER holds 131 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Monroe County?
Measured from mapped boundaries, the median parcel is 0.85 acres, and nine parcels in ten are under 40 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Monroe County is owned from out of state?
4.0% of parcels list an owner mailing address outside IL, per the county’s own records.
How much of Monroe County is government-owned?
Government entities — federal, state, and local — hold 2.2% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Monroe 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 (11)
19,546 parcels across 11 communities in Monroe County.