Lakes / New Hampshire / Merrimack County / Sunapee Lake
Sunapee Lake, New Hampshire
4,125.23 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Hampshire
43.38 degrees N, 72.05 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 Sunapee Lake Stacks Up
- Ranks #6 for surface area among the New Hampshire lakes counted so far - 4,125.23 acres.
- The largest lake in Merrimack County among those counted.
- About 29 miles from Concord, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Mountainview Lake | Merrimack | 2.8 mi | 115.89 acres |
| Messer Pond | Merrimack | 2.8 mi | 71.66 acres |
| Clark Pond | Merrimack | 3.6 mi | 33.36 acres |
| Otter Pond | Sullivan | 3.6 mi | 190.02 acres |
| Perkins Pond | Sullivan | 3.7 mi | 156.66 acres |
| Little Sunapee Lake | Merrimack | 4.0 mi | 486.06 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sunapee Lake
How Big Is Sunapee Lake?
Sunapee Lake covers 4,125.23 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 120804340). Verified October 30, 2026.