Lakes / New Jersey / Mercer County / Carnegie Lake
Carnegie Lake, New Jersey
243.89 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Jersey
40.35 degrees N, 74.63 degrees W - Mercer 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 Carnegie Lake Stacks Up
- Larger than 87% of the 295 lakes counted in New Jersey.
- About 2 miles from Princeton, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Plainsboro Pond | Mercer | 2.8 mi | 37.56 acres |
| Grovers Mill Pond | Mercer | 3.2 mi | 31.14 acres |
| Mercer County Lake | Mercer | 6.0 mi | 290.09 acres |
| Rosedale Lake | Mercer | 6.8 mi | 29.87 acres |
| Davidsons Millpond | Middlesex | 7.7 mi | 29.9 acres |
| Farrington Lake | Middlesex | 10 mi | 221.41 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Carnegie Lake
How Big Is Carnegie Lake?
Carnegie Lake covers 243.89 acres in Mercer County, New Jersey.
What Is the Largest Lake in Mercer County?
Mercer County Lake is the largest lake in Mercer County, at 290.09 acres.
Largest Lakes in New Jersey
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Hopatcong | Sussex | 2,493.66 acres | - |
| 2 | Round Valley Reservoir | Hunterdon | 2,272.23 acres | - |
| 3 | Wanaque Reservoir | Passaic | 1,971.09 acres | - |
| 4 | Van Sciver Lake | Burlington | 1,396.61 acres | - |
| 5 | Spruce Run Reservoir | Hunterdon | 1,354.88 acres | - |
All 295 New Jersey lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 64681288). Verified October 30, 2026.