Lakes / Illinois / Calhoun County / Royal Lake
Royal Lake, Illinois
86.49 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
38.94 degrees N, 90.50 degrees W - Calhoun 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 Royal Lake Stacks Up
- Larger than 56% of the 511 lakes counted in Illinois.
- About 74 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Silver Lake | Calhoun | 1.8 mi | 270.83 acres |
| Gilbert Lake | Calhoun | 1.9 mi | 220.67 acres |
| Chickahominy Lake | Calhoun | 2.0 mi | 50.22 acres |
| Lower Stump Lake | Calhoun | 4.1 mi | 182.12 acres |
| Long Lake | Jersey | 4.9 mi | 67.95 acres |
| Upper Stump Lake | Jersey | 6.1 mi | 840.65 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Royal Lake
How Big Is Royal Lake?
Royal Lake covers 86.49 acres in Calhoun County, Illinois.
What Is the Largest Lake in Calhoun County?
Watson Lake is the largest lake in Calhoun County, at 353.61 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 156106653). Verified October 30, 2026.