New Hampshire elevation
New Hampshire runs from sea level (Atlantic Ocean) to 6,287 ft at Mount Washington, with an average of about 1,162 ft.
Highest point: Mount Washington
6,287ft
1,916 m above sea level
NGS survey mark MT WASH RESET (PID DP4904), Coos County · NAVD 88 (current U.S. vertical datum)
Source: NOAA National Geodetic Survey datasheet DP4904 (mark last recovered 2014-05-13)
- Lowest point: Atlantic Ocean
- 0 ft (sea level)
- Source: USGS, Elevations and Distances in the United States (highest and lowest elevations) (revised edition 2001)
- Average elevation (sampled)
- 1,162 ft (354 m)
- Mean of 230 USGS points about 10 km apart; an estimate, not a published figure.
- Source: USGS 3DEP + 2024 Census boundary
- USGS table figure for the high point
- 6,288 ft
- Older survey on the NGVD 29 datum.
- Source: USGS Elevations and Distances (revised 2001)
Data updated · By Ankit Kumar, compiled from public U.S. government and open datasets · How these numbers are made
New Hampshire places on this site
Cities and towns (USGS, downtown)
- Concord274 ft
Mountains and peaks
- Mount Washington6,287 ft
- Mount Adams5,790 ft
- Mount Monroe5,353 ft
- Mount Lafayette5,242 ft
New Hampshire elevation facts
| What | Value | Source |
|---|---|---|
| Highest point: Mount Washington | 6,287 ft (1,916 m) | NOAA National Geodetic Survey datasheet DP4904 (mark last recovered 2014-05-13) |
| Lowest point: Atlantic Ocean | Sea level | USGS, Elevations and Distances in the United States (highest and lowest elevations) (revised edition 2001) |
| Vertical range | 6,287 ft (1,916 m) | Difference of the two figures above |
| Average elevation (sampled) | 1,162 ft (354 m) | USGS 3DEP, 230 grid points |
| USGS 3DEP value at the high point | 6,275 ft (1,913 m) | USGS 3DEP, within 250 m of the GNIS summit |
| Capital: Concord | 274 ft (84 m) | USGS 3DEP at the city center |
| Land area | 8,954 sq mi (23,190 km²) | Census 2024 boundary file |
Life at 1,162 ft
Standard-atmosphere estimates for the state's sampled average elevation (1,162 ft). Weather moves the real values a little from day to day.
- Oxygen per breath
- 96 % of sea level
- Air is still 20.9% oxygen; there is just less air.
- Oxygen calculator
- Home canning
- Above 1,000 ft, USDA processing times and pressure-canner pounds go up.
- Canning adjustments · Baking
Sources: pressure from the U.S. Standard Atmosphere, 1976 (NOAA, NASA, USAF); boiling point from the Antoine equation for water (Lange's Handbook of Chemistry); canning thresholds from the USDA Complete Guide to Home Canning. Not medical or food-safety advice; follow the tested USDA recipe for your altitude.
City elevations in New Hampshire
- Concord (capital)274 ft
- Manchester254 ft
- Rochester229 ft
- Nashua159 ft
- Dover65 ft
Largest places in New Hampshire
The five incorporated places by 2024 Census population estimate.
| What | Value | Source |
|---|---|---|
| Manchester | 254 ft (78 m) · pop. 116,386 | USGS 3DEP; Census 2024 estimate |
| Nashua | 159 ft (48 m) · pop. 91,851 | USGS 3DEP; Census 2024 estimate |
| Concord | 274 ft (84 m) · pop. 44,674 | USGS 3DEP; Census 2024 estimate |
| Dover | 65 ft (20 m) · pop. 33,909 | USGS 3DEP; Census 2024 estimate |
| Rochester | 229 ft (70 m) · pop. 33,598 | USGS 3DEP; Census 2024 estimate |
Frequently asked questions
What is the highest point in New Hampshire?
Mount Washington at 6,287 ft (1,916 m), from NOAA National Geodetic Survey datasheet DP4904 (mark last recovered 2014-05-13). The USGS Elevations and Distances table (2001) lists 6,288 ft, an older survey on the NGVD 29 datum.
What is the lowest point in New Hampshire?
Atlantic Ocean, at sea level, per the USGS Elevations and Distances table (2001).
What is the average elevation of New Hampshire?
About 1,162 ft (354 m): the mean of USGS 3DEP elevations at 230 points on a regular grid about 10 km apart inside the state boundary. It is our estimate, not a published figure.
Which New Hampshire city on this site is highest?
Concord, at 274 ft downtown (USGS).
Does altitude affect cooking in New Hampshire?
At 1,162 ft, water boils at about 209.9 °F (98.8 °C) and standard air pressure is 28.69 inHg (971 hPa), so each breath holds about 96% of the oxygen it would at sea level. That is for the state's average elevation; check your own town, because New Hampshire spans 6,287 ft from lowest to highest.
Sources
- NOAA National Geodetic Survey datasheet DP4904 (mark last recovered 2014-05-13) — highest point
- USGS, Elevations and Distances in the United States (highest and lowest elevations) — lowest point
- USGS Elevation Point Query Service (3DEP) — average elevation, city-center values and the high-point check
- U.S. Census Bureau, 2024 Cartographic Boundary Files (places, states; 1:500,000) — state boundary and land area
- U.S. Census Bureau, 2024 Gazetteer Files (places) — city locations
- U.S. Census Bureau, Vintage 2024 Population Estimates (cities and towns, July 1, 2024) — largest cities by population
- Wikidata (elevation statements that cite a source; the cited source is listed with each value) — state capital name
- U.S. Standard Atmosphere, 1976 (NOAA/NASA/USAF); water boiling point by the Antoine equation (Lange’s Handbook of Chemistry) — boiling point, air pressure and oxygen
How each number is produced: methodology and data sources.
Every state: US elevation by state · Highest point in each state
Data updated · By Ankit Kumar, compiled from public U.S. government and open datasets · How these numbers are made