Derby City, Kansas
According to 2000 Census Bureau, there were 17807 people, 6196 households, and 4967 families living in the city. The population density was 2391.6 people per square mile (923.4/kmē), making it the 28th most densely populated city in Kansas. There were 6407 housing units at an average density of 860 per square mile (332.05/kmē). The average household size was 2.85 people, and the average family size was 3.24 people. In the city Age distribution was 32.2% under the age of 18, 6.8% from 18 to 24, 29.4% from 25 to 44, 21.7% from 45 to 64, and 10% who were 65 or older. For every 100 males there were 108.1 females. For every 100 males age 18 and over, there were 111.6 females. The median age of the city's population was 34.8 years, The median age of males was 33.7 years, for females the median age was 35.8 years. The racial or ethnic makeup of the city was 94.02% White, 1.33% Black or African American, 0.78% American Indian, 1.01% Asian, 0.14% Native Hawaiian, 1.79% from two or more races and 0.94% Other races.
The median income for a household in the city was $58508, it is Kansas's 21st wealthiest city by median household income. The median income for a family in the city was $66476, it is the 21st highest city by median family income in the U.S. state of Kansas. The per capita income for the city was $22779, it would be the 35th highest city by per capita income in the U.S. state of Kansas. The median income of city was $30200, The median income for males was $41626 versus $20557 for females.
In 2000, 5893 pupils and students, of which 49.36% are male and 50.64% are female, 33.09% of the total population, are in the education system. Of which, percentage of enrollment student are in, 5.52% nursery or pri school, 5.6% kindergarten, 45.82% elementary school, 22.35% high school and 20.72% College graduate school.
| Year | Population |
|---|---|
| April 2000 census | 17807 |
| April 2000 Estimate | 18268 |
| July 2000 Estimate | 18331 |
| July 2001 Estimate | 18583 |
| July 2002 Estimate | 18926 |
| July 2003 Estimate | 19209 |
| July 2004 Estimate | 20346 |
| July 2005 Estimate | 20577 |
| July 2006 Estimate | 21071 |
| July 2007 Estimate | 22015 |
| July 2008 Estimate | 22517 |
| School | Male | Female | Total |
|---|---|---|---|
| Nursery school | 122 | 203 | 325 |
| Kindergarten | 144 | 186 | 330 |
| Elementary school | 1346 | 1354 | 2700 |
| High school | 667 | 650 | 1317 |
| College or graduate school | 630 | 591 | 1221 |
| Place | Median household income | Median family income | Per capita income |
|---|---|---|---|
| Derby city, Kansas | $58508 | $66476 | $22779 |
| Sedgwick County, Kansas | $42485 | $51645 | $20907 |
| Kansas, United States | $40624 | $49624 | $20506 |
| United States | $41994 | $50046 | $21587 |