2020 census

The 2020 United States census counted 1,352 people, 578 households, and 350 families in Carbondale.^[8][9] The population density was 1,849.5 per square mile (714.1/km²). There were 622 housing units at an average density of 850.9 per square mile (328.5/km²).^[9][10] The racial makeup was 91.64% (1,239) white or European American (89.05% non-Hispanic white), 0.15% (2) black or African-American, 0.15% (2) Native American or Alaska Native, 0.81% (11) Asian, 0.0% (0) Pacific Islander or Native Hawaiian, 0.67% (9) from other races, and 6.58% (89) from two or more races.^[11] Hispanic or Latino of any race was 4.36% (59) of the population.^[12]

Of the 578 households, 31.7% had children under the age of 18; 40.5% were married couples living together; 34.1% had a female householder with no spouse or partner present. 33.2% of households consisted of individuals and 16.4% had someone living alone who was 65 years of age or older.^[9] The average household size was 2.4 and the average family size was 2.7.^[13] The percent of those with a bachelor’s degree or higher was estimated to be 7.8% of the population.^[14]

25.5% of the population was under the age of 18, 7.1% from 18 to 24, 25.7% from 25 to 44, 25.7% from 45 to 64, and 15.9% who were 65 years of age or older. The median age was 37.7 years. For every 100 females, there were 106.7 males.^[9] For every 100 females ages 18 and older, there were 112.4 males.^[9]

The 2016-2020 5-year American Community Survey estimates show that the median household income was $60,938 (with a margin of error of +/- $8,960) and the median family income was $72,250 (+/- $13,834).^[15] Males had a median income of $40,521 (+/- $10,374) versus $24,265 (+/- $4,021) for females. The median income for those above 16 years old was $30,878 (+/- $5,092).^[16] Approximately, 9.4% of families and 12.0% of the population were below the poverty line, including 15.7% of those under the age of 18 and 15.8% of those ages 65 or over.^[17][18]

2010 census

As of the census^[19] of 2010, there were 1,437 people, 590 households, and 385 families residing in the city. The population density was 1,916.0 inhabitants per square mile (739.8/km²). There were 637 housing units at an average density of 849.3 per square mile (327.9/km²). The racial makeup of the city was 95.8% White, 0.3% African American, 1.2% Native American, 0.2% Asian, 0.1% Pacific Islander, 0.3% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 2.9% of the population.

There were 590 households, of which 34.6% had children under the age of 18 living with them, 45.1% were married couples living together, 14.1% had a female householder with no husband present, 6.1% had a male householder with no wife present, and 34.7% were non-families. 29.7% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 3.00.

The median age in the city was 34.3 years. 26.5% of residents were under the age of 18; 10.7% were between the ages of 18 and 24; 23.2% were from 25 to 44; 26.4% were from 45 to 64; and 13.2% were 65 years of age or older. The gender makeup of the city was 50.0% male and 50.0% female.

2000 census

As of the census^[20] of 2000, there were 1,478 people, 581 households, and 393 families residing in the city. The population density was 2,020.0 inhabitants per square mile (779.9/km²). There were 617 housing units at an average density of 843.3 per square mile (325.6/km²). The racial makeup of the city was 96.75% White, 0.27% African American, 0.54% Native American, 0.07% Asian, 0.07% Pacific Islander, 0.54% from other races, and 1.76% from two or more races. Hispanic or Latino of any race were 3.79% of the population.

There were 581 households, out of which 41.1% had children under the age of 18 living with them, 50.1% were married couples living together, 13.8% had a female householder with no husband present, and 32.2% were non-families. 28.2% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.16.

In the city, the population was spread out, with 32.0% under the age of 18, 9.3% from 18 to 24, 29.5% from 25 to 44, 19.4% from 45 to 64, and 9.8% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 89.7 males. For every 100 females age 18 and over, there were 82.7 males.

The median income for a household in the city was $31,550, and the median income for a family was $39,226. Males had a median income of $29,226 versus $21,300 for females. The per capita income for the city was $14,729. About 9.8% of families and 11.1% of the population were below the poverty line, including 13.4% of those under age 18 and 11.5% of those age 65 or over.