Lakes / Illinois / Johnson County / Lake of Egypt
Lake of Egypt, Illinois
2,129.02 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
37.59 degrees N, 88.92 degrees W - Johnson 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 Lake of Egypt Stacks Up
- Larger than 96% of the 511 lakes counted in Illinois.
- The largest lake in Johnson County among those counted.
- About 19 miles from Carbondale, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Marion Country Club Lake | Williamson | 3.7 mi | 42.18 acres |
| Teal Lake | Williamson | 4.8 mi | 29.65 acres |
| Herrin Lake | Williamson | 5.9 mi | 52.39 acres |
| Marion Reservoir | Williamson | 6.0 mi | 245.13 acres |
| Little Cache Number 1 Reservoir | Johnson | 6.9 mi | 33.61 acres |
| Dutchman Lake | Johnson | 7.2 mi | 101.56 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake of Egypt
How Big Is Lake of Egypt?
Lake of Egypt covers 2,129.02 acres in Johnson County, Illinois.
What Is the Largest Lake in Johnson County?
Lake of Egypt is the largest lake in Johnson County, at 2,129.02 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 49239115). Verified October 30, 2026.