Lakes / New Hampshire / Merrimack County / Penacook Lake
Penacook Lake, New Hampshire
361.76 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Hampshire
43.23 degrees N, 71.59 degrees W - Merrimack 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 Penacook Lake Stacks Up
- Larger than 90% of the 516 lakes counted in New Hampshire.
- About 3 miles from Concord, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Horseshoe Pond | Merrimack | 2.6 mi | 39.04 acres |
| Little Turkey Pond | Merrimack | 2.8 mi | 164.61 acres |
| Turkey Pond | Merrimack | 3.6 mi | 167.79 acres |
| Turtle Pond | Merrimack | 4.2 mi | 159.38 acres |
| Flaghole Pond | Merrimack | 4.5 mi | 67.46 acres |
| Kimball Pond | Merrimack | 4.8 mi | 27.43 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Penacook Lake
How Big Is Penacook Lake?
Penacook Lake covers 361.76 acres in Merrimack County, New Hampshire.
What Is the Largest Lake in Merrimack County?
Sunapee Lake is the largest lake in Merrimack County, at 4,125.23 acres.
Largest Lakes in New Hampshire
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Winnipesaukee | Belknap | 45,654.45 acres | - |
| 2 | Umbagog Lake | Coos | 7,642.5 acres | - |
| 3 | Squam Lake | Belknap | 6,791.2 acres | - |
| 4 | Newfound Lake | Grafton | 4,451.11 acres | - |
| 5 | Lake Winnisquam | Belknap | 4,213.89 acres | - |
All 516 New Hampshire lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 135908793). Verified October 30, 2026.