Plainville is a town in Hartford County, Connecticut, United States. The population was 17,525 at the 2020 census. History Plainville first was inhabited by Europeans around 1650. By the 1660s, the land was incorporated as land for nearby Farmington. In the year 1869, it separated from Farmington due to the distance of the town center and the growth of Plainville downtown due to the installation of the New York, New Haven and Hartford Railroad and the Hartford, Providence, and Fishkill Railroad. Geography According to the United States Census Bureau, the town has a total area of , of which is land and 0.077 square mile (0.2 km2, or 0.72%, is water. The east side of the town is bordered by two prominent peaks of the Metacomet Ridge: Pinnacle Rock and Bradley Mountain. The Metacomet Trail traverses those peaks. Demographics As of the census of 2020, there were 17,525 people, 8,187 households, and 4,565 families residing in the town. The population density was . The racial makeup of the town was 87.1% White, 1.7% Black or African American, 0.9% Native American, 4.0% Asian, 0.00% Pacific Islander, and 1.3% from two or more races. Hispanic or Latino of any race were 10.3% of the population. There were 8,187 households, out of which 60.1% were married couples living together, 13.5% had a female householder with no husband present, 5.8% had a male householder with no wife present, and 20.7% were non-families, such as single person households. The average household size was 2.32 and the average family size was 2.97. In the town, the population was spread out, with 19.8% under the age of 19, 6.0% from 20 to 24, 25.9% from 25 to 44, 29.1% from 45 to 64, and 19.2% who were 65 years of age or older. The median age was 43.8 years. For every 100 males, there were 106.8 females. The median income for a household in the town was $70,012. The per capita income for the town was $40,869. About 6.2% of the population were below the poverty line, including 10.0% of those under age 18 and 8.0% of those age 65 or over. The median home value was $219,700 and median rent was $1,027. 68.0% of the population own, while 32.0% rent. About 61.0% of housing structures were single unit, 38.0% were multi-unit, and 1.0% were other, such as mobile homes. Economy There were approximately 2,007 active businesses