Illinois · FIPS 17103 · County seat: Dixon
Lee County, IL GIS & Parcel Viewer
Use this page to reach the official county parcel map for Lee County, Illinois. The button below opens Lee County Parcel Viewer in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Lee County parcel map ↗
Opens gis.leecountyil.gov in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Lee County Parcel Viewer |
|---|---|
| Type | County-run map |
| Website | gis.leecountyil.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Dixon |
| Population | 33,654 (2023 Census Bureau estimate) |
| Land area | 725 sq mi |
| FIPS code | 17103 |
Who runs this map
It is a county-level map: Lee County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Open the official link in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
About Lee County
The U.S. Census Bureau estimated Lee County's population at 33,654 in 2023, spread over about 725 square miles of land, or roughly 46 people per square mile. Among Illinois's 102 counties, it is the 42nd largest by population. Its county seat is Dixon.
Neighboring counties
Parcels close to the edge of Lee County can fall in the next county over. Neighboring counties:
A note on accuracy
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.