|— Town —|
|• Total||31.37 sq mi (81.25 km2)|
|• Land||14.10 sq mi (36.52 km2)|
|• Water||17.27 sq mi (44.73 km2)|
|Elevation||20 ft (6 m)|
|• Estimate (2011)||1,152|
|• Density||81.7/sq mi (31.5/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||0582484|
Abenaki Indians called it Meduncook, meaning "bay at the end of the sandbar." Part of the Waldo Patent, it was first settled in 1750. A garrison was built on Garrison Island, which connects to the mainland at low tide. By 1754, 22 families lived in Meduncook, most taking shelter within the garrison when the French and Indian War broke out.
Raid on Meduncook (1758) 
During the French and Indian War, the community was raided twice. The first attack was from Indians just after sunrise on May 22, 1758. They killing and scalped Joshua and Hannah Bradford and their infant son Winslow. An original settler from Kingston, Massachusetts and great-grandson of Governor William Bradford, he had remained in his house, believing it close enough to the garrison that his family could flee there when necessary. But while pounding corn, the Bradfords missed hearing the garrison's alarm gun. Five of their children managed to escape their pursuers into the fort, but two of their sons Cornelius (21) and Joshua (12) were captured and carried to Canada.
After trying to lay siege to Thomaston, Maine in September 1758, a party of Indians and Acadians under the command of French Officer Boishebert raided the village. Eight British were captured or killed.
On February 25, 1807, Meduncook Plantation was incorporated as Friendship. By 1859, when the population was 691, the village had two shipbuilders, two gristmills, one shingle mill and three sawmills. By 1880, when the population was 938, other manufactures included sails, carriages, boots and shoes. But boatbuilding remained the dominant industry in town, which became famous for producing the Friendship Sloop, a gaff-rigged sailboat designed for lobstering and fishing. Each summer the town hosts the Friendship Sloop Races.
According to the United States Census Bureau, the town has a total area of 31.37 square miles (81.25 km2), of which, 14.10 square miles (36.52 km2) of it is land and 17.27 square miles (44.73 km2) is water. Located on a peninsula that projects into the Gulf of Maine, Friendship lies between Muscongus Bay and the Friendship River. It includes several islands, the largest of which is Friendship Long Island (or Meduncook Island).
The town is the site of Franklin Island National Wildlife Refuge.
2010 census 
As of the census of 2010, there were 1,152 people, 508 households, and 352 families residing in the town. The population density was 81.7 inhabitants per square mile (31.5 /km2). There were 896 housing units at an average density of 63.5 per square mile (24.5 /km2). The racial makeup of the town was 99.2% White, 0.2% Asian, 0.3% from other races, and 0.3% from two or more races. Hispanic or Latino of any race were 0.3% of the population.
There were 508 households out of which 21.3% had children under the age of 18 living with them, 56.7% were married couples living together, 7.9% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 30.7% were non-families. 24.2% of all households were made up of individuals and 11.2% had someone living alone who was 65 years of age or older. The average household size was 2.27 and the average family size was 2.66.
The median age in the town was 50.1 years. 17.2% of residents were under the age of 18; 7% were between the ages of 18 and 24; 18.7% were from 25 to 44; 31.7% were from 45 to 64; and 25.3% were 65 years of age or older. The gender makeup of the town was 50.4% male and 49.6% female.
2000 census 
As of the census of 2000, there were 1,204 people, 508 households, and 354 families residing in the town. The population density was 85.9 people per square mile (33.2/km²). There were 849 housing units at an average density of 60.5 per square mile (23.4/km²). The racial makeup of the town was 99.34% White, 0.25% from other races, and 0.42% from two or more races. Hispanic or Latino of any race were 0.50% of the population.
There were 508 persons living alone who were 65 years of age or older. The average household size was 2.37 and the average family size was 2.76.
In the town the population was spread out with 20.9% under the age of 18, 6.9% from 18 to 24, 26.2% from 25 to 44, 26.3% from 45 to 64, and 19.7% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 97.7 males. For every 100 females age 18 and over, there were 97.5 males.
The median income for a household in the town was $39,348, and the median income for a family was $41,648. Males had a median income of $29,605 versus $19,000 for females. The per capita income for the town was $20,409. About 8.3% of families and 11.0% of the population were below the poverty line, including 16.7% of those under age 18 and 11.0% of those age 65 or over.
In popular culture 
- The majority of the 1995 film Casper was set in Friendship, though the production crew chose the nearby resort town of Rockport for filming, citing it to be "more authentic". In the film, Friendship is home to a fictional Art Nouveau mansion called Whipstaff Manor, which is haunted by four ghosts. The mansion—and therefore the town—also appear in the 1996-1998 animated series The Spooktacular New Adventures of Casper.
Notable people 
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-12-16.
- "American FactFinder". United States Census Bureau. Retrieved 2012-12-16.
- "Population Estimates". United States Census Bureau. Retrieved 2013-01-05.
- The history of the state of Maine: from its first discovery, A. D ..., Volume 2 By William Durkee Williamson, p. 333
- Coolidge, Austin J.; John B. Mansfield (1859). A History and Description of New England. Boston, Massachusetts. pp. 132–133.
- Varney, George J. (1886), Gazetteer of the state of Maine. Friendship, Boston: Russell
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- Friendship Public Library
- The Friendship Museum
- The Friendship Sloop Society
- Maine Genealogy: Friendship, Knox County, Maine