Lakes / Illinois / Sangamon County / Lake Springfield
Lake Springfield, Illinois
3,899.08 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
39.72 degrees N, 89.62 degrees W - Sangamon 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 Springfield Stacks Up
- Ranks #8 for surface area among the Illinois lakes counted so far - 3,899.08 acres.
- The largest lake in Sangamon County among those counted.
- About 5 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Clear Lake | Sangamon | 8.4 mi | 136.4 acres |
| Sangchris Lake | Christian | 10 mi | 2,260.03 acres |
| Sudduth Lake | Sangamon | 11 mi | 36.82 acres |
| Lake Kincaid | Christian | 16 mi | 31.33 acres |
| Waverly City Lake | Morgan | 22 mi | 60.95 acres |
| Lake Petersburg | Menard | 23 mi | 177.42 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Springfield
How Big Is Lake Springfield?
Lake Springfield covers 3,899.08 acres in Sangamon County, Illinois.
What Is the Largest Lake in Sangamon County?
Lake Springfield is the largest lake in Sangamon County, at 3,899.08 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 131464476). Verified October 30, 2026.