Cities

• New Castle

Towns

Unincorporated areas

Townships

Reservoirs

• Castle Lake
• Giboney Lake
• Haven, Lake
• Summit Lake Reservoir
• Westwood Park Reservoir

Adjacent counties

• Delaware County (north)
• Randolph County (northeast)
• Wayne County (east)
• Fayette County (southeast)
• Rush County (south)
• Hancock County (southwest)
• Madison County (northwest)

Major highways

Sources: National Atlas,^[5] U.S. Census Bureau^[6]

• Interstate 70
• U.S. Route 35
• U.S. Route 36
• U.S. Route 40
• State Road 3
• State Road 38
• State Road 103
• State Road 109
• State Road 140
• State Road 234
• State Road 236

2020 Census

As of the census^[18] of 2020, there were 48,914 people, 18,387 households, and 9,489 families living in the town. The population density was 123.89 inhabitants per square mile (47.8/km²). There were 20,952 housing units at an average density of 53.07 per square mile (20.5/km²). The racial makeup of the county was 93.8% White, 2.2% African American, 1.1% Asian, 0.02% Native Hawaiian or Pacific Islander, 0.2% Native American or Alaska Native, 0.8% from other races, and 3.4% from two or more races. Hispanic or Latino of any race were 0.2% of the population.

There were 18,387 households, of which 20.7% had children under the age of 18 living with them, 49.7% were married couples living together, 25.4% had a female householder with no husband present, 17.3% had a male householder with no wife present, and 7.6% were non-families. 42.7% of all households were made up of individuals. The average household size was 2.66 and the average family size was 2.96.

26.8% of the population had never been married. 48.0% of residents were married and not separated, 7.0% were widowed, 16.4% were divorced, and 1.8% were separated.

The median age in the town was 42.0. 5.0% of residents were under the age of 5; 20.7% of residents were under the age of 18; 79.3% were age 18 or older; and 18.9% were age 65 or older. 9.5% of the population were veterans.

The most common language spoken at home was English with 98.5% speaking it at home, 1.0% spoke Spanish at home, 0.2% spoke other Indo-European languages, 0.2% spoke an Asian or Pacific Islander language at home, and 0.1% spoke other languages. 0.5% of the population were foreign born.

The median household income in Henry County was $51,104, 9.0% less than the median average for the state of Indiana. 13.9% of the population were in poverty, including 19.3% of residents under the age of 18. The poverty rate for the town was 1% higher than that of the state. 18.5% of the population were disabled and 6.8% had no healthcare coverage. 43.8% of the population had attained a high school or equivalent degree, 21.1% had attended college but received no degree, 9.0% had attained an Associate's degree or higher, 10.7% had attained a Bachelor's degree or higher, and 5.6% had a graduate or professional degree. 9.8% had no degree. 50.7% of Henry County residents were employed, working a mean of 40.0 hours per week. The median gross rent in Henry County was $697 and the homeownership rate was 74.4%. 1,998 housing units were vacant at a density of 5.06 per square mile (2.0/km²).

2010 Census

As of the 2010 United States Census, there were 49,462 people, 19,077 households, and 13,020 families residing in the county.^[19] The population density was 126.2 inhabitants per square mile (48.7/km²). There were 21,288 housing units at an average density of 54.3 per square mile (21.0/km²).^[4] The racial makeup of the county was 95.7% white, 2.2% black or African American, 0.3% Asian, 0.1% American Indian, 0.4% from other races, and 1.2% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population.^[19] In terms of ancestry, 19.9% were German, 13.3% were American, 11.8% were Irish, and 9.1% were English.^[20]

Of the 19,077 households, 31.2% had children under the age of 18 living with them, 52.1% were married couples living together, 11.6% had a female householder with no husband present, 31.8% were non-families, and 27.3% of all households were made up of individuals. The average household size was 2.43 and the average family size was 2.94. The median age was 41.4 years.^[19]

The median income for a household in the county was $47,697 and the median income for a family was $52,701. Males had a median income of $42,628 versus $30,226 for females. The per capita income for the county was $19,879. About 10.2% of families and 13.7% of the population were below the poverty line, including 20.0% of those under age 18 and 8.8% of those age 65 or over.^[21]