Isle au Haut (/ˈaɪ.lə.hoʊ/) is a town in Knox County, Maine, United States, on an island of the same name in Penobscot Bay. The population was 73 at the 2010 census. Home to portions of Acadia National Park, Isle au Haut is accessible by ferry from Stonington, Maine.
According to the United States Census Bureau, the town has a total area of 113.20 square miles (293.19 km), of which 12.52 square miles (32.43 km) is land and 100.68 square miles (260.76 km) is water. Isle au Haut is an island approximately 6 miles (9.7 km) long by 2 miles (3.2 km) wide in Penobscot Bay, part of the Gulf of Maine and Atlantic Ocean.
Mount Champlain, elevation 540 feet (160 m), is the highest point on the island, located on a north-south ridge occupying the island’s center. Rocky Mountain, elevation 511 feet (156 m), and Sawyer Mountain, at 486 feet (148 m), are neighboring summits along the ridge to the south. The terrain consists of low hills covered by temperate coniferous forests; the coastline is mainly granite boulders, with a few rocky beaches and salt marshes. Long Pond, a small freshwater lake, stretches down the eastern side of the island; being warmer and more sheltered than the surrounding ocean, it is used for recreation and one may occasionally see a float plane, although no scheduled service is available.
As of the census of 2010, there were 73 people, 42 households, and 17 families residing in the town. The population density was 5.8 inhabitants per square mile (2.2/km). There were 172 housing units at an average density of 13.7 per square mile (5.3/km). The racial makeup of the town was 91.8% White, 1.4% African American, 2.7% Native American, 1.4% Asian, and 2.7% from two or more races.
There were 42 households of which 21.4% had children under the age of 18 living with them, 19.0% were married couples living together, 9.5% had a female householder with no husband present, 11.9% had a male householder with no wife present, and 59.5% were non-families. 45.2% of all households were made up of individuals and 14.3% had someone living alone who was 65 years of age or older. The average household size was 1.74 and the average family size was 2.41.
The median age in the town was 49.5 years. 13.7% of residents were under the age of 18; 4.1% were between the ages of 18 and 24; 20.4% were from 25 to 44; 38.3% were from 45 to 64; and 23.3% were 65 years of age or older. The gender makeup of the town was 57.5% male and 42.5% female.
As of the census of 2000, there were 79 people, 32 households, and 20 families residing in the town. The population density was 6.2 people per square mile (2.4/km²). There were 164 housing units at an average density of 12.9 per square mile (5.0/km²). The racial makeup of the town was 100.00% White. Hispanic or Latino of any race were 3.80% of the population. 19.7% were of French, 16.4% Irish, 11.5% Dutch, 11.5% English, 11.5% Scottish and 8.2% Finnish ancestry according to Census 2000.
There were 32 households out of which 34.4% had children under the age of 18 living with them, 59.4% were married couples living together, 3.1% had a female householder with no husband present, and 34.4% were non-families. 25.0% of all households were made up of individuals and 3.1% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.05.
In the town, the population was spread out with 25.3% under the age of 18, 6.3% from 18 to 24, 30.4% from 25 to 44, 24.1% from 45 to 64, and 13.9% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 107.9 males. For every 100 females age 18 and over, there were 118.5 males.
The median income for a household in the town was $25,000, and the median income for a family was $34,167. Males had a median income of $23,750 versus $16,563 for females. The per capita income for the town was $11,723. 17.3% of the population lived below the poverty line, though no families, no one under eighteen or over 65 did.