The Lansing Correctional Facility (formerly the Kansas State Penitentiary), which includes the state's main maximum-security prison, is located in Lansing. Perry Edward Smith and Richard Eugene Hickock, the subjects of In Cold Blood, were hanged at the prison on April 14, 1965.
Most recently, Lansing was ranked 88 in the top 100 of Money Magazine's 2007 list of best places to live.
Lansing's population was estimated to be 10,705 in the year 2006, an increase of 1036, or +10.7%, over the previous six years.
As of the U.S. Census in 2000, there were 9,199 people, 2,435 households, and 1,913 families residing in the city. The population density was 1,080.1 people per square mile (416.9/km²). There were 2,548 housing units at an average density of 299.2/sq mi (115.5/km²). The racial makeup of the city was 80.95% White, 12.46% Black or African American, 1.22% Native American, 1.33% Asian, 0.15% Pacific Islander, 1.34% from other races, and 2.55% from two or more races. Hispanic or Latino of any race were 3.85% of the population.
There were 2,435 households out of which 42.2% had children under the age of 18 living with them, 65.0% were married couples living together, 9.4% had a female householder with no husband present, and 21.4% were non-families. 18.4% of all households were made up of individuals and 7.1% had someone living alone who was 65 years of age or older. The average household size was 2.79 and the average family size was 3.17.
In the city the population was spread out with 22.0% under the age of 18, 8.8% from 18 to 24, 38.5% from 25 to 44, 23.1% from 45 to 64, and 7.5% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 164.8 males. For every 100 females age 18 and over, there were 184.9 males.
The median income for a household in the city was $60,994, and the median income for a family was $65,639. Males had a median income of $36,326 versus $28,315 for females. The per capita income for the city was $21,655. About 1.9% of families and 2.4% of the population were below the poverty line, including 1.5% of those under age 18 and 3.5% of those age 65 or over.