2020 census
As of the 2020 census, Independence had a population of 28,676. The median age was 34.7 years. 28.7% of residents were under the age of 18 and 10.5% of residents were 65 years of age or older. For every 100 females there were 99.7 males, and for every 100 females age 18 and over there were 96.5 males age 18 and over.[11][12]
98.1% of residents lived in urban areas, while 1.9% lived in rural areas.[13]
There were 9,890 households in Independence, of which 43.0% had children under the age of 18 living in them. Of all households, 59.0% were married-couple households, 13.1% were households with a male householder and no spouse or partner present, and 19.8% were households with a female householder and no spouse or partner present. About 16.5% of all households were made up of individuals and 5.8% had someone living alone who was 65 years of age or older.[11]
There were 10,161 housing units, of which 2.7% were vacant. The homeowner vacancy rate was 0.7% and the rental vacancy rate was 4.4%.[11]
2000 census
As of the census[14] of 2000, there were 14,982 people, 5,181 households, and 4,149 families residing in the city. The population density was 893.2 inhabitants per square mile (344.9/km2). There were 5,391 housing units at an average density of 321.4 per square mile (124.1/km2). The racial makeup of the city was 97.20% White, 0.96% African American, 0.18% Native American, 0.40% Asian, 0.02% Pacific Islander, 0.36% from other races, and 0.87% from two or more races. Hispanic or Latino of any race were 1.15% of the population.
There were 5,181 households, out of which 44.9% had children under the age of 18 living with them, 62.9% were married couples living together, 12.1% had a female householder with no husband present, and 19.9% were non-families. 15.0% of all households were made up of individuals, and 3.4% had someone living alone who was 65 years of age or older. The average household size was 2.89 and the average family size was 3.21.
In the city, the population was spread out, with 30.4% under the age of 18, 9.2% from 18 to 24, 35.3% from 25 to 44, 18.5% from 45 to 64, and 6.5% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 101.6 males. For every 100 females age 18 and over, there were 97.3 males.
The median income for a household in the city was $51,002, and the median income for a family was $55,030. Males had a median income of $39,213 versus $26,807 for females. The per capita income for the city was $20,191. About 5.4% of families and 6.5% of the population were below the poverty line, including 9.2% of those under age 18 and 4.2% of those age 65 or over.
