Lakes / Illinois / Ogle County / Lost Lake
Lost Lake, Illinois
70.92 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
41.91 degrees N, 89.36 degrees W - Ogle County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Lost Lake Stacks Up
- Larger than 50% of the 511 lakes counted in Illinois.
- The largest lake in Ogle County among those counted.
- About 28 miles from Rockford, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Leake Lake | Lee | 15 mi | 27.68 acres |
| Lake Sule | Ogle | 17 mi | 69.48 acres |
| Woodhaven Lake | Lee | 18 mi | 26.93 acres |
| Levings Lake | Winnebago | 27 mi | 26.44 acres |
| Shabbona Lake | DeKalb | 28 mi | 310.61 acres |
| Lake Carlton | Whiteside | 31 mi | 72.4 acres |
Straight-line distance between lake centers.
Facts and Figures
Largest Lakes in Illinois
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Carlyle Lake | Clinton | 22,796.77 acres | - |
| 2 | Mine Number 21 Reservoir | Franklin | 17,062.04 acres | - |
| 3 | Upper Peoria Lake | Woodford | 15,460.64 acres | - |
| 4 | Lake Shelbyville | Shelby | 10,235.1 acres | - |
| 5 | Crab Orchard Lake | Williamson | 7,292.57 acres | - |
All 511 Illinois lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 145607921). Verified October 30, 2026.