Lakes / Illinois / Knox County / Spoon Lake
Spoon Lake, Illinois
546.84 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
40.96 degrees N, 90.13 degrees W - Knox 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 Spoon Lake Stacks Up
- Larger than 87% of the 511 lakes counted in Illinois.
- The largest lake in Knox County among those counted.
- About 34 miles from Peoria, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Green Oaks Lake | Knox | 2.3 mi | 30.15 acres |
| Lake Windsor | Knox | 3.4 mi | 38.05 acres |
| Snakeden Hollow Lake | Knox | 4.4 mi | 150.98 acres |
| Old Garage Lake | Knox | 6.6 mi | 25.2 acres |
| Rice Lake | Knox | 10 mi | 51.4 acres |
| Lake Calhoun | Knox | 12 mi | 31.88 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Spoon Lake
How Big Is Spoon Lake?
Spoon Lake covers 546.84 acres in Knox County, Illinois.
What Is the Largest Lake in Knox County?
Spoon Lake is the largest lake in Knox County, at 546.84 acres.
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 154348035). Verified October 30, 2026.