Berwick is a town in York County, Maine, United States, situated in the southern part of the state beside the Salmon Falls River.
According to the United States Census Bureau, the town has a total area of 37.86 square miles (98.06 km), of which, 37.52 square miles (97.18 km) of it is land and 0.34 square miles (0.88 km) is water. Berwick is drained by the Little River and Salmon Falls River. Diamond Hill, elevation 490 feet (149.4 m) above sea level, is the town’s highest point. The lowest elevation, which is approximately 70 feet (21.3 m) above sea level, is on the Salmon River as it crosses the southern most town border with South Berwick.
The town is served by state routes 9 and 236.
As of the census of 2010, there were 7,246 people, 2,749 households, and 2,029 families residing in the town. The population density was 193.1 inhabitants per square mile (74.6/km). There were 2,934 housing units at an average density of 78.2 per square mile (30.2/km). The racial makeup of the town was 96.2% White, 0.5% African American, 0.2% Native American, 1.3% Asian, 0.2% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 1.3% of the population.
There were 2,749 households of which 36.9% had children under the age of 18 living with them, 58.1% were married couples living together, 10.7% had a female householder with no husband present, 5.0% had a male householder with no wife present, and 26.2% were non-families. 20.6% of all households were made up of individuals and 6.6% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.01.
The median age in the town was 39.1 years. 25.2% of residents were under the age of 18; 6.7% were between the ages of 18 and 24; 26.9% were from 25 to 44; 30.1% were from 45 to 64; and 11% were 65 years of age or older. The gender makeup of the town was 49.4% male and 50.6% female.
As of the census of 2000, there were 6,353 people, 2,319 households, and 1,723 families residing in the town. The population density was 171.1 people per square mile (66.1/km²). There were 2,414 housing units at an average density of 65.0 per square mile (25.1/km²). The racial makeup of the town was 97.31% White, 0.36% Black or African American, 0.14% Native American, 1.16% Asian, 0.03% Pacific Islander, 0.06% from other races, and 0.93% from two or more races. Hispanic or Latino of any race were 0.54% of the population.
There were 2,319 households out of which 40.3% had children under the age of 18 living with them, 59.0% were married couples living together, 11.0% had a female householder with no husband present, and 25.7% were non-families. 20.4% of all households were made up of individuals and 7.2% had someone living alone who was 65 years of age or older. The average household size was 2.72 and the average family size was 3.15.
In the town, the population was spread out with 29.1% under the age of 18, 7.6% from 18 to 24, 32.5% from 25 to 44, 21.2% from 45 to 64, and 9.5% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 95.8 males. For every 100 females age 18 and over, there were 94.6 males.
The median income for a household in the town was $44,629, and the median income for a family was $53,776. Males had a median income of $36,329 versus $24,911 for females. The per capita income for the town was $18,988. About 6.9% of families and 8.3% of the population were below the poverty line, including 9.0% of those under age 18 and 15.9% of those age 65 or over.