Castine is a town in Hancock County in eastern Maine, USA, which served from 1670 to 1674 as the capital of Acadia. The population was 1,366 at the 2010 census. Castine is the home of Maine Maritime Academy, a four-year institution that graduates officers and engineers for the United States Merchant Marine and marine related industries. Approximately 1000 students are enrolled. During the French colonial period, Castine was the southern tip of Acadia and briefly served as the regional capital.
According to the United States Census Bureau, the town has a total area of 20.01 square miles (51.83 km), of which 7.78 square miles (20.15 km) is land and 12.23 square miles (31.68 km) is water. Castine is drained by the Bagaduce River estuary.
The town is crossed by state routes 166 and 166A. Situated on a peninsula in Penobscot Bay, Castine is bordered by the town of Penobscot to the northeast, Brooksville across the Bagaduce River to the southeast, and near Islesboro to the southwest.
As of the census of 2010, there were 1,366 people, 380 households, and 193 families residing in the town. The population density was 175.6 inhabitants per square mile (67.8/km). There were 704 housing units at an average density of 90.5 per square mile (34.9/km). The racial makeup of the town was 96.7% White, 0.5% African American, 0.1% Native American, 1.1% Asian, 0.4% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.2% of the population.
There were 380 households of which 15.5% had children under the age of 18 living with them, 43.9% were married couples living together, 4.2% had a female householder with no husband present, 2.6% had a male householder with no wife present, and 49.2% were non-families. 29.5% of all households were made up of individuals and 14.4% had someone living alone who was 65 years of age or older. The average household size was 2.13 and the average family size was 2.58.
The median age in the town was 22.2 years. 7.5% of residents were under the age of 18; 50.6% were between the ages of 18 and 24; 10.2% were from 25 to 44; 15.7% were from 45 to 64; and 16.2% were 65 years of age or older. The gender makeup of the town was 66.5% male and 33.5% female.
As of the census of 2000, there were 1,343 people, 372 households, and 222 families residing in the town. The population density was 172.2 people per square mile (66.5/km²). There were 649 housing units at an average density of 83.2 per square mile (32.1/km²). The racial makeup of the town was 97.10% White, 0.67% African American, 0.60% Native American, 0.74% Asian, 0.22% from other races, and 0.67% from two or more races. Hispanic or Latino of any race were 0.60% of the population.
There were 372 households out of which 18.0% had children under the age of 18 living with them, 49.2% were married couples living together, 7.0% had a female householder with no husband present, and 40.3% were non-families. 30.1% of all households were made up of individuals and 12.4% had someone living alone who was 65 years of age or older. The average household size was 2.16 and the average family size was 2.69.
In the town, the population was spread out with 10.3% under the age of 18, 41.9% from 18 to 24, 15.0% from 25 to 44, 18.4% from 45 to 64, and 14.4% who were 65 years of age or older. The median age was 24 years. For every 100 females, there were 186.4 males. For every 100 females age 18 and over, there were 196.8 males.
The median income for a household in the town was $46,250, and the median income for a family was $65,500. Males had a median income of $36,250 versus $30,893 for females. The per capita income for the town was $20,078. About 3.2% of families and 12.0% of the population were below the poverty line, including 10.9% of those under age 18 and 4.7% of those age 65 or over.