2020 census As of the
2020 census, Lenexa had a population of 57,434, 23,934 households, and 15,432 families. The population density was 1,685.7 per square mile (650.8/km). The 25,308 housing units had an average density of 742.8 per square mile (286.8/km), and 5.4% of units were vacant. The homeowner vacancy rate was 1.1% and the rental vacancy rate was 8.0%. Of the 23,934 households, 27.7% had children under 18. 51.8% were married-couple households, 17.6% had a male householder with no spouse or partner present, and 24.3% had a female householder with no spouse or partner present. About 28.1% of households consisted of individuals, and 9.2% had someone living alone who was 65 or older. The average household size was 2.4 and the average family size was 2.9.
2010 census As of the 2010
census 48,190 people, 19,288 households, and 13,065 families were living in the city. The population density was . The 20,832 housing units had an average density of . The
racial makeup of the city was 84.4% White, 5.8% African American, 0.4% Native American, 3.8% Asian, 0.1% Pacific Islander, 3.0% from other races, and 2.5% from
two or more races. Hispanics or Latinos of any race were 7.3% of the population. Of the 19,288 households, 33.7% had children under 18 living with them, 55.3% were married couples living together, 9.0% had a female householder with no husband present, 3.4% had a male householder with no wife present, and 32.3% were not families. About 25.2% of all households were made up of individuals, and 7.3% had someone living alone who was 65 or older. The average household size was 2.48 and the average family size was 3.00. The median age in the city was 36.6 years; 24.7% of residents were under 18; 8.3% were between 18 and 24; 28.2% were from 25 to 44; 28.5% were from 45 to 64; and 10.3% were 65 years of age or older. The gender makeup of the city was 48.7% male and 51.3% female.
Education The 2016–2020 5-year
American Community Survey estimates show that the percent of those with a bachelor's degree or higher was 39.7% of the population.
Income and poverty The 2016–2020 5-year American Community Survey estimates show that the median household income was $90,487 (with a margin of error of +/- $3,777) and the median family income was $110,925 (+/- $4,040). Males had a median income of $59,365 (+/- $4,837) versus $42,653 (+/- $1,613) for females. The median income for those above 16 years old was $49,977 (+/- $2,070). Approximately, 2.8% of families and 5.0% of the population were below the
poverty line, including 5.7% of those under 18 and 3.1% of those 65 or over.
Ancestry The ancestry of Lenexa in 2020 was 25.5%
German, 13.3%
Irish, 13.2%
English, 3.9%
Italian, 2.3%
French, 2.1%
Scottish, 2.0%
Polish, 2.0%
Norwegian, and 1.9%
sub-Saharan African. ==Economy==