In 1869, the centrally located railroad town of Carroll City was selected as the county seat, replacing, with some protest, Carrollton. Later a $4,000 courthouse was constructed on the town square. This building was used until it burned to the ground in 1886. The vaults and records were undamaged, however, and moved to temporary housing in the Joyce Building and Drees' Music Hall.
The following winter a $40,000 bond issue was approved toward the construction of a new, permanent courthouse. The stone-and-brick building was built on the northwest corner of the square (the parking lot of the current courthouse). The courthouse, complete with a clock-tower, was used for more than three-quarters of a century, then replaced by a modern-looking building in 1965.
A $750,000 bond issue was used to construct and equip the new courthouse. This building was officially dedicated on September 24, 1966. The highlight of the dedication ceremony was the opening of the boxes sealed in the cornerstone of the old courthouse. The bell from the previous courthouse clock tower sits on the courthouse grounds.[8]
The population of Carroll, Iowa from US census data
2020 census
As of the census of 2020,[15] there were 10,321 people, 4,468 households, and 2,596 families residing in the city. The population density was 1,798.3 inhabitants per square mile (694.3/km2). There were 4,825 housing units at an average density of 840.7 per square mile (324.6/km2). The racial makeup of the city was 91.4% White, 2.4% Black or African American, 0.1% Native American, 0.5% Asian, 0.0% Pacific Islander, 1.9% from other races and 3.7% from two or more races. Hispanic or Latino persons of any race comprised 4.3% of the population.
Of the 4,468 households, 26.2% of which had children under the age of 18 living with them, 44.9% were married couples living together, 5.5% were cohabitating couples, 30.8% had a female householder with no spouse or partner present and 18.8% had a male householder with no spouse or partner present. 41.9% of all households were non-families. 37.6% of all households were made up of individuals, 18.1% had someone living alone who was 65 years old or older.
The median age in the city was 42.5 years. 25.7% of the residents were under the age of 20; 4.4% were between the ages of 20 and 24; 22.8% were from 25 and 44; 24.8% were from 45 and 64; and 22.3% were 65 years of age or older. The gender makeup of the city was 48.0% male and 52.0% female.
2010 census
At the 2010 census there were 10,103 people, 4,357 households, and 2,605 families living in the city. The population density was 1,775.6 inhabitants per square mile (685.6/km2). There were 4,698 housing units at an average density of 825.7 per square mile (318.8/km2). The racial makeup of the city was 96.0% White, 0.5% African American, 0.1% Native American, 0.7% Asian, 1.5% from other races, and 1.3% from two or more races. Hispanic or Latino of any race were 2.4%.[16]
Of the 4,357 households 28.6% had children under the age of 18 living with them, 47.7% were married couples living together, 9.0% had a female householder with no husband present, 3.1% had a male householder with no wife present, and 40.2% were non-families. 35.5% of households were one person and 16.7% were one person aged 65 or older. The average household size was 2.25 and the average family size was 2.91.
The median age was 42 years. 23.9% of residents were under the age of 18; 6.9% were between the ages of 18 and 24; 22.7% were from 25 to 44; 26.7% were from 45 to 64; and 19.7% were 65 or older. The gender makeup of the city was 47.1% male and 52.9% female.
2000 census
At the 2000 census there were 10,106 people, 4,173 households, and 2,649 families living in the city. The population density was 1,823.2 inhabitants per square mile (703.9/km2). There were 4,431 housing units at an average density of 799.4 per square mile (308.7/km2). The racial makeup of the city was 98.57% White, 0.18% African American, 0.10% Native American, 0.51% Asian, 0.28% from other races, and 0.37% from two or more races. Hispanic or Latino of any race were 0.57%.[17]
Of the 4,173 households 31.8% had children under the age of 18 living with them, 51.7% were married couples living together, 8.9% had a female householder with no husband present, and 36.5% were non-families. 31.9% of households were one person and 16.2% were one person aged 65 or older. The average household size was 2.36 and the average family size was 2.99.
Population spread: 25.9% under the age of 18, 8.0% from 18 to 24, 26.0% from 25 to 44, 20.4% from 45 to 64, and 19.7% 65 or older. The median age was 39 years. For every 100 females, there were 89.5 males. For every 100 females age 18 and over, there were 85.1 males.
The median household income was $39,854 and the median family income was $51,020. Males had a median income of $31,124 versus $22,215 for females. The per capita income for the city was $20,442. About 3.4% of families and 5.2% of the population were below the poverty line, including 3.8% of those under age 18 and 7.4% of those age 65 or over.
^"Station: Carroll, IA". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved June 27, 2021.
^"Station: Carroll, IA". U.S. Monthly Climate Normals (1981–2010). National Oceanic and Atmospheric Administration. Retrieved June 27, 2021.
