Lakes / Indiana / Kosciusko County / Diamond Lake
Diamond Lake, Kosciusko County, Indiana
80.49 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Indiana
41.10 degrees N, 85.94 degrees W - Kosciusko 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 Diamond Lake Stacks Up
- Larger than 57% of the 425 lakes counted in Indiana.
- About 41 miles from Fort Wayne, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Yellow Creek Lake | Kosciusko | 0.9 mi | 155.08 acres |
| Hill Lake | Kosciusko | 1.6 mi | 69.86 acres |
| McClures Lake | Kosciusko | 1.8 mi | 33.13 acres |
| Loon Lake | Kosciusko | 2.2 mi | 44.6 acres |
| Beaver Dam Lake | Kosciusko | 2.2 mi | 154.69 acres |
| Caldwell Lake | Kosciusko | 2.3 mi | 44.13 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Diamond Lake
How Big Is Diamond Lake?
Diamond Lake covers 80.49 acres in Kosciusko County, Indiana.
What Is the Largest Lake in Kosciusko County?
Lake Wawasee is the largest lake in Kosciusko County, at 3,426.28 acres.
Largest Lakes in Indiana
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Monroe Lake | Monroe | 11,112.45 acres | - |
| 2 | Patoka Lake | Orange | 9,120.83 acres | - |
| 3 | Brookville Lake | Franklin | 4,364.22 acres | - |
| 4 | Lake Wawasee | Kosciusko | 3,426.28 acres | - |
| 5 | Broad Pond | Gibson | 2,941.52 acres | - |
All 425 Indiana lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 155352315). Verified October 30, 2026.