Lakes / Illinois / Montgomery County
Lakes in Montgomery County, Illinois
6 lakes counted in Montgomery County - the largest is Lake Lou Yaeger at 1,369.33 acres.
6
Lakes Counted
1,369.33 acres
Largest - Lake Lou Yaeger
Montgomery County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Lou Yaeger | Montgomery | 1,369.33 acres | - |
| 2 | Lake Glenn Shoals | Montgomery | 1,097.06 acres | - |
| 3 | Coffeen Lake | Montgomery | 881.18 acres | - |
| 4 | Lake Hillsboro | Montgomery | 105.51 acres | - |
| 5 | Fivemile Lake | Montgomery | 71.41 acres | - |
| 6 | Walton Lake | Montgomery | 29.16 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.