Winfield, Kansas

===2000 census===
As of the [[census]] of 2000,<ref name="GR2">{{cite web|url=https://www.census.gov|publisher=[[United States Census Bureau]]|access-date=2008-01-31|title=U.S. Census website}}</ref> there were 12,206 people, 4,627 households, and 2,952 families residing in the city. The population density was {{convert|1,104.0|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 5,049 housing units at an average density of {{convert|456.7|/sqmi|/km2|sp=us|adj=off}}. The racial makeup of the city was 88.06% [[Race (United States census)|White]], 3.26% Black or African American, 1.08% Native American, 3.74% Asian, 0.02% Pacific Islander, 1.73% from other races, and 2.12% from two or more races. Hispanic or Latino people of any race were 4.66% of the population.

There were 4,627 households, out of which 31.9% had children under the age of 18 living with them, 49.6% were [[Marriage|married couples]] living together, 10.7% had a female householder with no husband present, and 36.2% were non-families. 32.4% of all households were made up of individuals, and 16.9% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 3.00.

In the city, the population was spread out, with 24.9% under the age of 18, 11.8% from 18 to 24, 27.4% from 25 to 44, 19.4% from 45 to 64, and 16.6% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 98.5 males. For every 100 females age 18 and over, there were 97.0 males.

The [[Median household income|median income for a household]] in the city was $34,443, and the median income for a family was $44,539. Males had a median income of $31,768 versus $21,605 for females. The [[per capita income]] for the city was $19,162. About 9.9% of families and 13.8% of the population were below the [[poverty line]], including 18.6% of those under age 18 and 11.4% of those age 65 or over.