| Official Name: | Plymouth, New Hampshire |
| Settlement Type: | Census-designated place |
| Pushpin Map: | New Hampshire#USA |
| Pushpin Label: | Plymouth |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New Hampshire |
| Subdivision Type2: | County |
| Subdivision Name2: | Grafton |
| Subdivision Type3: | Town |
| Subdivision Name3: | Plymouth |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 15.41 |
| Area Land Km2: | 15.22 |
| Area Water Km2: | 0.19 |
| Area Total Sq Mi: | 5.95 |
| Area Land Sq Mi: | 5.88 |
| Area Water Sq Mi: | 0.07 |
| Population As Of: | 2020 |
| Population Total: | 4730 |
| Population Density Km2: | 310.87 |
| Population Density Sq Mi: | 805.11 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 515 |
| Coordinates: | 43.7569°N -71.6881°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 03264 |
| Area Code: | 603 |
| Blank Name: | FIPS code |
| Blank Info: | 33-62580 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2378089 |
Plymouth is a census-designated place (CDP) and the main village in the town of Plymouth in Grafton County, New Hampshire, United States. Its population was 4,730 at the 2020 census,[2] out of 6,682 in the entire town. The CDP includes the campus of Plymouth State University.
The CDP is in the eastern part of the town of Plymouth, on the west side of the Pemigewasset River. It includes the town center, the campus of Plymouth State University, and residential neighborhoods to the west and south of the town center. The CDP boundary is the Pemigewasset River on the east, Glove Hollow Brook to the south, Texas Hill Road to the south and west, Clay Brook to the west, and Route 25 and the Baker River to the north.[3]
Interstate 93 runs just to the east of Plymouth, across the Pemigewasset River in the town of Holderness, with access from Exit 25 (New Hampshire Route 175A) and Exit 26 (New Hampshire Route 25). I-93 leads north to Littleton and south to Concord, the state capital. U.S. Route 3 passes through the center of the community, leading north 7miles to Campton and south 6miles to Ashland. NH 25 (Tenney Mountain Highway) passes just north of the CDP, leading northwest to Haverhill, New Hampshire.
According to the U.S. Census Bureau, the Plymouth CDP has a total area of 15.4sqkm, of which 15.2sqkm are land and 0.2sqkm, or 1.25%, are water.[4]
The population totals of the Plymouth CDP are strongly influenced by the presence of Plymouth State University, with students living in dormitories and in off-campus housing in the community. As of the census of 2010, there were 4,456 people, 836 households, and 321 families residing in the CDP. There were 910 housing units, of which 74, or 8.1%, were vacant. The racial makeup of the CDP was 96.4% white, 0.8% African American, 0.2% Native American, 1.1% Asian, 0.0% Pacific Islander, 0.5% some other race, and 1.0% from two or more races. 1.8% of the population were Hispanic or Latino of any race.[5]
Of the 836 households in the CDP, 19.3% had children under the age of 18 living with them, 30.0% were headed by married couples living together, 5.3% had a female householder with no husband present, and 61.6% were non-families. 23.8% of all households were made up of individuals, and 3.2% were someone living alone who was 65 years of age or older. The average household size was 2.61, and the average family size was 2.95. 2,277 people in the CDP lived in group quarters such as dormitories rather than households.[5]
6.6% of residents in the CDP were under the age of 18, 74.1% were from age 18 to 24, 8.3% were from 25 to 44, 8.2% were from 45 to 64, and 2.7% were 65 years of age or older. The median age was 20.8 years. For every 100 females, there were 116.0 males. For every 100 females age 18 and over, there were 116.6 males.[5]
For the period 2011-15, the estimated median annual income for a household was $27,066, and the median income for a family was $98,068. Male full-time workers had a median income of $60,703 versus $45,903 for females. The per capita income for the CDP was $16,510. 37.4% of the population and 0.0% of families were below the poverty line, along with 0.0% of people under the age of 18 and 0.0% of people 65 or older.[6]