Arapahoe County, Colorado
As of the census of 2000, there were 487967 people in the county, organized into 190909 households, and 125791 families residing in the county. The population density was 607.6 people per square mile (234.6/km˛), it would be the third most densely populated county in the U.S. state of Colorado. There were 196835 housing units at an average density of 245.1 per square mile (94.63/km˛). It has an average household size was 2.53 persons, and the average family size was 3.11 persons. In the Arapahoe County, 26.7% of the population was under the age of 18, 8.6% were 18 to 24, 33.1% were 25 to 44, 23% were 45 to 64, and 8.6% who were 65 or older. For every 100 females there were 97.1 males. For every 100 females age 18 and over, there were 94.2 males. The county's estimated population as of July 2008 was 554282, The racial makeup of the county was 82.16% White, 9.83% Black or African American, 0.85% American Indian, 4.51% Asian, 0.17% Native Hawaiian, and 2.48% from two or more races.
The median income for a household in the county was $53570, making its Colorado's ninth highest county by median household income. The median income for a family in the county was $63875, making it the eighth highest county by median family income in Colorado. The per capita income for the county was $28147, it is the ninth wealthiest county in terms of per capita income.
In 2000, 134175 pupils and students, of which 50% are male and 50% are female, 27.5% of the total population, are in the education system. Of which, percentage of enrollment student are in, 6.89% nursery or pri school, 5.15% kindergarten, 45.21% elementary school, 22.23% high school and 20.52% College graduate school.
| Rank | City | County | Total Area mi2 | Land Area mi2 | Water Area mi2 | Population | Density mi2 | Per capita Income | House hold Income |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Bennett Town | Adams County, Arapahoe County | 3.1 | 3.1 | 0 | 2021 | 652.3 | 17905 | 46600 |
| 2 | Strasburg Cdp | Adams County, Arapahoe County | 7.74 | 7.74 | 0 | 1402 | 181.1 | 19546 | 53558 |
| 3 | Aurora City | Arapahoe County, Adams County, Douglas County | 142.74 | 142.5 | 0.24 | 276393 | 1939.6 | 21095 | 46507 |
| 4 | Bow Mar Town | Arapahoe County, Jefferson County | 0.83 | 0.72 | 0.11 | 847 | 1181.4 | 53558 | 112300 |
| 5 | Byers Cdp | Arapahoe County | 4.28 | 4.28 | 0 | 1233 | 288.3 | 17924 | 43750 |
| 6 | Castlewood Cdp | Arapahoe County | 6.15 | 6.15 | 0 | 25567 | 4158 | 37891 | 80983 |
| 7 | Cherry Hills Village City | Arapahoe County | 6.26 | 6.22 | 0.04 | 5958 | 958.6 | 99996 | 190805 |
| 8 | Columbine Cdp | Arapahoe County, Jefferson County | 6.77 | 6.64 | 0.13 | 24095 | 3629.6 | 28471 | 71319 |
| 9 | Columbine Valley Town | Arapahoe County | 1.02 | 1.02 | 0 | 1132 | 1105.3 | 71758 | 118196 |
| 10 | Deer Trail Town | Arapahoe County | 1 | 1 | 0 | 598 | 596.5 | 16000 | 30481 |
| 11 | Englewood City | Arapahoe County | 6.61 | 6.55 | 0.05 | 31727 | 4842 | 20904 | 38943 |
| 12 | Foxfield Town | Arapahoe County | 1.29 | 1.29 | 0 | 746 | 577.7 | 40970 | 109507 |
| 13 | Glendale City | Arapahoe County | 0.55 | 0.55 | 0 | 4547 | 8241.3 | 20838 | 29043 |
| 14 | Greenwood Village City | Arapahoe County | 8.11 | 8.11 | 0 | 11035 | 1361 | 69189 | 116147 |
| 15 | Littleton City | Arapahoe County, Jefferson County, Douglas County | 13.92 | 13.52 | 0.41 | 40340 | 2984.8 | 28681 | 50583 |
| 16 | Sheridan City | Arapahoe County | 2.24 | 2.2 | 0.04 | 5600 | 2543.4 | 16635 | 34984 |
| 17 | Southglenn Cdp | Arapahoe County | 9.74 | 9.74 | 0 | 43520 | 4467.4 | 32699 | 69833 |
| Year | Population |
|---|---|
| April 2000 census | 487967 |
| April 2000 Estimate | 488893 |
| July 2000 Estimate | 491662 |
| July 2001 Estimate | 502853 |
| July 2002 Estimate | 509769 |
| July 2003 Estimate | 514808 |
| July 2004 Estimate | 520427 |
| July 2005 Estimate | 526249 |
| July 2006 Estimate | 532403 |
| July 2007 Estimate | 543307 |
| July 2008 Estimate | 554282 |
| School | Male | Female | Total |
|---|---|---|---|
| Nursery school | 4650 | 4592 | 9242 |
| Kindergarten | 3753 | 3161 | 6914 |
| Elementary school | 30909 | 29754 | 60663 |
| High school | 15243 | 14584 | 29827 |
| College or graduate school | 12533 | 14996 | 27529 |
| Place | Median household income | Median family income | Per capita income |
|---|---|---|---|
| Arapahoe County, Colorado | $53570 | $63875 | $28147 |
| Colorado, United States | $47203 | $55883 | $24049 |
| United States | $41994 | $50046 | $21587 |