2020 census As of the
2020 census, Tarentum had a population of 4,352. The median age was 39.4 years. 21.3% of residents were under the age of 18 and 15.7% of residents were 65 years of age or older. For every 100 females there were 97.6 males, and for every 100 females age 18 and over there were 92.0 males age 18 and over. 98.5% of residents lived in urban areas, while 1.5% lived in rural areas. There were 1,996 households in Tarentum, of which 27.1% had children under the age of 18 living in them. Of all households, 27.8% were married-couple households, 26.8% were households with a male householder and no spouse or partner present, and 36.8% were households with a female householder and no spouse or partner present. About 39.2% of all households were made up of individuals and 12.2% had someone living alone who was 65 years of age or older. there were 4,993 people, 2,170 households, and 1,306 families residing in the borough. The population density was . There were 2,556 housing units at an average density of . The
racial makeup of the borough was 93.79% White, 3.65% African American, 0.28% Native American, 0.60% Asian, 0.04% Pacific Islander, 0.26% from other races, and 1.38% from two or more races. Hispanic or Latino of any race were 0.90% of the population. There were 2,170 households, out of which 26.6% had children under the age of 18 living with them, 41.0% were married couples living together, 14.0% had a female householder with no husband present, and 39.8% were non-families. 34.2% of all households were made up of individuals, and 13.2% had someone living alone who was 65 years of age or older. The average household size was 2.28 and the average family size was 2.92. In the borough the population was spread out, with 22.0% under the age of 18, 8.8% from 18 to 24, 31.5% from 25 to 44, 22.0% from 45 to 64, and 15.8% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 88.1 males. For every 100 females age 18 and over, there were 85.8 males. The median income for a household in the borough was $26,895, and the median income for a family was $32,042. Males had a median income of $28,578 versus $21,891 for females. The
per capita income for the borough was $14,671. About 12.1% of families and 15.6% of the population were below the
poverty line, including 24.1% of those under age 18 and 7.3% of those age 65 or over. ==Museums and other points of interest==