Lakes / New Hampshire / Sullivan County / Millen Lake
Millen Lake, New Hampshire
143.32 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Hampshire
43.17 degrees N, 72.12 degrees W - Sullivan 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 Millen Lake Stacks Up
- Larger than 70% of the 516 lakes counted in New Hampshire.
- About 30 miles from Concord, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Ashuelot Pond | Sullivan | 1.7 mi | 367.8 acres |
| Halfmoon Pond | Sullivan | 2.1 mi | 75.12 acres |
| Long Pond | Sullivan | 2.2 mi | 113.92 acres |
| Sand Pond | Cheshire | 2.5 mi | 154.94 acres |
| Island Pond | Sullivan | 2.9 mi | 192.21 acres |
| Highland Lake | Cheshire | 4.1 mi | 696.59 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Millen Lake
How Big Is Millen Lake?
Millen Lake covers 143.32 acres in Sullivan County, New Hampshire.
What Is the Largest Lake in Sullivan County?
Ashuelot Pond is the largest lake in Sullivan County, at 367.8 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 136890767). Verified October 30, 2026.