Cobb County, Georgia
As of the census of 2000, there were 607751 residents, 227487 households, and 156579 families in the county. The population density was 1786.7 people per square mile (689.85/kmē), it is the second most densely populated county in the U.S. state of Georgia. There were 237522 housing units at an average density of 698.3 per square mile (269.62/kmē). The average household size was 2.64 persons, and the average family size was 3.14 persons. In the Cobb County, 26.1% of the population was under the age of 18, 9% were 18 to 24, 36.5% were 25 to 44, 21.5% were 45 to 64, and 6.9% who were 65 or older. For every 100 females there were 98.5 males. For every 100 females age 18 and over, there were 95.9 males. Its population was estimated at 698158 in July 2008, The racial or ethnic makeup of the county was 491391 White, 162420 Black or African American, 3085 American Indian, 28737 Asian, 879 Native Hawaiian, and 11646 from two or more races.
The median income for a household in the county was $58289, making it the fifth wealthiest county by median household income among the Georgia. The median income for a family in the county was $67649, it is the third wealthiest county in terms of median family income. The per capita income for the county was $27863, it is the fourth wealthiest county in terms of per capita income.
In 2000, 165032 pupils and students, of which 50.61% are male and 49.39% are female, 27.15% of the total population, are in the education system. Of which, percentage of enrollment student are in, 8.73% nursery or pri school, 5.73% kindergarten, 43.4% elementary school, 20.49% high school and 21.64% 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 | Acworth City | Cobb County | 7.6 | 7.08 | 0.53 | 13422 | 1896.9 | 21956 | 50918 |
| 2 | Austell City | Cobb County | 5.7 | 5.69 | 0.01 | 5359 | 942.1 | 15924 | 38933 |
| 3 | Fair Oaks Cdp | Cobb County | 1.96 | 1.95 | 0.01 | 8443 | 4325.4 | 13245 | 31766 |
| 4 | Kennesaw City | Cobb County | 8.51 | 8.44 | 0.07 | 21675 | 2568.3 | 24757 | 60404 |
| 5 | Mableton Cdp | Cobb County | 20.76 | 20.59 | 0.17 | 29733 | 1444.4 | 20814 | 49426 |
| 6 | Marietta City | Cobb County | 21.95 | 21.89 | 0.06 | 58748 | 2684.1 | 23409 | 40645 |
| 7 | Powder Springs City | Cobb County | 6.35 | 6.34 | 0.01 | 12481 | 1969.2 | 19776 | 56486 |
| 8 | Smyrna City | Cobb County | 13.92 | 13.9 | 0.02 | 40999 | 2949.9 | 27637 | 47572 |
| 9 | Vinings Cdp | Cobb County | 3.29 | 3.18 | 0.11 | 9677 | 3039.2 | 45068 | 58876 |
| 10 | Atlanta City | Fulton County, DeKalb County, Clayton County, Cobb County | 132.42 | 131.75 | 0.68 | 416474 | 3161.2 | 25772 | 34770 |
| Year | Population |
|---|---|
| April 2000 census | 607751 |
| April 2000 Estimate | 607747 |
| July 2000 Estimate | 612642 |
| July 2001 Estimate | 626870 |
| July 2002 Estimate | 637617 |
| July 2003 Estimate | 643633 |
| July 2004 Estimate | 652157 |
| July 2005 Estimate | 661197 |
| July 2006 Estimate | 678245 |
| July 2007 Estimate | 688896 |
| July 2008 Estimate | 698158 |
| School | Male | Female | Total |
|---|---|---|---|
| Nursery school | 7051 | 7363 | 14414 |
| Kindergarten | 4812 | 4646 | 9458 |
| Elementary school | 36803 | 34826 | 71629 |
| High school | 17632 | 16186 | 33818 |
| College or graduate school | 17218 | 18495 | 35713 |
| Place | Median household income | Median family income | Per capita income |
|---|---|---|---|
| Cobb County, Georgia | $58289 | $67649 | $27863 |
| Georgia, United States | $42433 | $49280 | $21154 |
| United States | $41994 | $50046 | $21587 |