Lakes / New Jersey / Mercer County / Plainsboro Pond
Plainsboro Pond, New Jersey
37.56 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Jersey
40.33 degrees N, 74.59 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 Plainsboro Pond Stacks Up
- Larger than 30% of the 295 lakes counted in New Jersey.
- About 4 miles from Princeton, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Grovers Mill Pond | Mercer | 1.3 mi | 31.14 acres |
| Carnegie Lake | Mercer | 2.8 mi | 243.89 acres |
| Mercer County Lake | Mercer | 5.1 mi | 290.09 acres |
| Davidsons Millpond | Middlesex | 7.2 mi | 29.9 acres |
| Lake Manalapan | Middlesex | 8.5 mi | 52.39 acres |
| Rosedale Lake | Mercer | 8.7 mi | 29.87 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Plainsboro Pond
How Big Is Plainsboro Pond?
Plainsboro Pond covers 37.56 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 64659330). Verified October 30, 2026.