Lakes / Indiana / LaGrange County / Ontario Millpond
Ontario Millpond, Indiana
149.26 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Indiana
41.70 degrees N, 85.36 degrees W - LaGrange 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 Ontario Millpond Stacks Up
- Larger than 76% of the 425 lakes counted in Indiana.
- About 45 miles from Fort Wayne, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Troxel Lake | LaGrange | 0.7 mi | 50.87 acres |
| Nasby Dam | LaGrange | 2.3 mi | 31.75 acres |
| Cedar Lake | LaGrange | 2.5 mi | 127.9 acres |
| Still Lake | LaGrange | 4.5 mi | 30.04 acres |
| Mongo Millpond | LaGrange | 4.8 mi | 76.83 acres |
| North Twin Lake | LaGrange | 5.4 mi | 137.63 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ontario Millpond
How Big Is Ontario Millpond?
Ontario Millpond covers 149.26 acres in LaGrange County, Indiana.
What Is the Largest Lake in LaGrange County?
Dallas Lake is the largest lake in LaGrange County, at 407.12 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 155639357). Verified October 30, 2026.