Population 775,208 · Census ACS 2020–24
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Population and households in Cobb County
Household size in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.66 | 2.74 | 2.70 | 2.68 |
| 2010–14 | 2.69 | 2.83 | 2.77 | 2.73 |
| 2015–19 | 2.70 | 2.81 | 2.75 | 2.71 |
| 2020–24 | 2.69 | 2.79 | 2.73 | 2.65 |
| Change | +0.03 | +0.05 | +0.03 | −0.03 |
Households in Cobb County average 2.69 people, about the same as the country as a whole (2.65). The typical household here is smaller than in the Atlanta area overall, where it has 2.79 people. Household size has crept up from 2.66 in 2006–10, even as the national average fell.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.1 | 35.5 | 36.0 | 37.7 |
| 2010–14 | 37.3 | 36.5 | 36.9 | 38.6 |
| 2015–19 | 38.1 | 37.5 | 38.1 | 39.6 |
| 2020–24 | 38.9 | 38.2 | 38.6 | 40.1 |
| Change | +2.8 | +2.7 | +2.6 | +2.3 |
Half of the people in Cobb County are younger than 38.9 and half are older, close to the national median of 40.1. Since 2006–10, the median age has climbed from 36.1, in line with the national trend. Residents skew youngest in the center and oldest in the northeast.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.8% | 13.3% | 13.8% | 12.3% |
| 2010–14 | 12.5% | 13.6% | 13.8% | 12.3% |
| 2015–19 | 11.3% | 12.5% | 13.0% | 11.6% |
| 2020–24 | 10.7% | 12.7% | 13.4% | 11.6% |
| Change | −1.1 pts | −0.6 pts | −0.4 pts | −0.6 pts |
Single-parent households are about as common in Cobb County as they are nationally: 10.7%, against 11.6%. Single parents are less common here than in the Atlanta area overall (12.7%). Since 2006–10, the single-parent share has edged down 1.1 points, in line with the national trend.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Cobb County
Renters in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 30.4% | 32.1% | 32.8% | 33.3% |
| 2010–14 | 35.0% | 35.5% | 35.8% | 35.6% |
| 2015–19 | 35.5% | 36.7% | 36.7% | 36.0% |
| 2020–24 | 33.0% | 33.9% | 34.3% | 34.8% |
| Change | +2.5 pts | +1.8 pts | +1.5 pts | +1.5 pts |
About a third of households in Cobb County rent their homes (33.0%), close to the national share of 34.8%. About three in ten owners (30.0%) have paid off their mortgages, below the national share of 39.8%. The renter share is up 2.5 points from 2006–10, as it has nationally.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.7% | 11.9% | 13.1% | 11.4% |
| 2010–14 | 8.9% | 11.4% | 13.2% | 11.4% |
| 2015–19 | 7.1% | 8.6% | 11.6% | 11.1% |
| 2020–24 | 6.7% | 8.0% | 10.3% | 9.6% |
| Change | −3.1 pts | −3.8 pts | −2.8 pts | −1.8 pts |
Fewer homes sit empty in Cobb County than nationally: 6.7%, against 9.6% for the U.S. Vacancy is down 3.1 points from 2006–10, as it has nationally. Only ten of Georgia's 159 counties have a lower vacancy rate.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 1986 | 1988 | 1985 | 1974 |
| 2010–14 | 1987 | 1989 | 1987 | 1975 |
| 2015–19 | 1987 | 1990 | 1987 | 1977 |
| 2020–24 | 1989 | 1993 | 1991 | 1980 |
| Change | +3 | +5 | +6 | +6 |
Much of the housing in Cobb County is relatively new: half of its homes were built after 1989, compared with 1980 for the U.S. as a whole. The Atlanta area as a whole looks much the same. The newest homes are mostly in the northwest, the oldest in the center.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,159 | $1,050 | $910 | $965 |
| 2010–14 | $1,202 | $1,116 | $977 | $1,040 |
| 2015–19 | $1,427 | $1,293 | $1,112 | $1,213 |
| 2020–24 | $1,934 | $1,799 | $1,520 | $1,571 |
| Change | +$775 | +$749 | +$609 | +$606 |
The median renter in Cobb County pays $1,934 a month for rent and utilities, well above the national median of $1,571. Rents are up $775 a month from 2006–10, a 67% jump, faster than rents rose nationally. The typical renter here spends 31.4% of household income on rent, just over the 30% mark often used to define affordable rent. Rents run highest in the northeast and lowest in the center.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Cobb County
Bachelor's degrees in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 43.5% | 34.5% | 28.1% | 28.4% |
| 2010–14 | 43.2% | 35.2% | 28.9% | 29.6% |
| 2015–19 | 47.0% | 38.2% | 31.4% | 32.1% |
| 2020–24 | 50.1% | 42.0% | 35.1% | 35.6% |
| Change | +6.6 pts | +7.5 pts | +7.0 pts | +7.2 pts |
Cobb County is highly educated: about half of adults 25 and older (50.1%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree has risen 6.6 points since 2006–10, as it has nationally. Few Georgia counties have a higher share of college graduates: only four of 159.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 90.0% | 87.2% | 84.1% | 84.9% |
| 2010–14 | 90.8% | 88.0% | 85.4% | 86.1% |
| 2015–19 | 91.9% | 89.4% | 87.2% | 87.7% |
| 2020–24 | 92.6% | 90.9% | 89.2% | 89.3% |
| Change | +2.6 pts | +3.6 pts | +5.0 pts | +4.3 pts |
High school completion in Cobb County is above the national rate: 92.6% of adults have a diploma or equivalent, against 89.3%. The share with a diploma is up 2.6 points from 2006–10, mirroring the country. Few Georgia counties have a higher share of high school graduates: only 11 of 159.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Cobb County
| Period | Cobb County | Atlanta area | Georgia | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.2% | 9.0% | 8.8% | 8.1% |
| 2010–14 | 9.1% | 10.7% | 10.7% | 9.4% |
| 2015–19 | 4.4% | 5.2% | 5.8% | 5.6% |
| 2020–24 | 4.4% | 5.2% | 5.2% | 5.4% |
| Change | −2.8 pts | −3.8 pts | −3.6 pts | −2.7 pts |
Jobs have been a little easier to find in Cobb County than nationally: unemployment was 4.4%, against 5.4%. Unemployment has fallen 2.8 points since 2006–10, mirroring the country. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Cobb County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Cobb County | 2.69 | 38.9 | 10.7% | 33.0% | 6.7% | 1989 | $1,934 | 50.1% | 92.6% | 4.4% |
| Fulton County | 2.37 | 38.1 | 11.9% | 45.7% | 9.6% | 1991 | $1,882 | 58.9% | 94.0% | 6.1% |
| Paulding County | 3.03 | 37.4 | 13.3% | 19.2% | 7.0% | 2002 | $1,805 | 30.2% | 92.6% | 4.5% |
| Gwinnett County | 3.09 | 36.6 | 13.2% | 33.7% | 5.5% | 1996 | $2,020 | 38.6% | 87.6% | 4.2% |
| Polk County | 2.79 | 38.9 | 17.6% | 34.0% | 9.4% | 1983 | $983 | 15.9% | 85.4% | 5.5% |
| Barrow County | 2.95 | 36.4 | 13.0% | 21.5% | 5.0% | 2000 | $1,488 | 21.4% | 88.9% | 3.7% |
| Oconee County | 2.91 | 41.4 | 6.6% | 18.7% | 5.4% | 1999 | $1,568 | 57.1% | 96.5% | 2.7% |
| Clarke County | 2.22 | 33.2 | 12.6% | 58.6% | 6.9% | 1987 | $1,250 | 46.2% | 89.0% | 5.3% |
| Oglethorpe County | 2.94 | 43.2 | 11.5% | 16.2% | 17.3% | 1990 | $855 | 25.1% | 88.5% | 3.3% |
| Etowah County | 2.62 | 42.4 | 12.3% | 26.1% | 16.5% | 1977 | $928 | 18.0% | 85.4% | 6.3% |
| Blount County | 2.69 | 42.1 | 11.5% | 19.0% | 11.5% | 1988 | $851 | 16.4% | 83.3% | 4.8% |
All figures 2020–24.
Counties with similar populations: Ventura County, CA · San Mateo County, CA · San Joaquin County, CA · El Paso County, TX · Essex County, MA · Montgomery County, PA · Suffolk County, MA · Fort Bend County, TX · Middlesex County, NJ · Worcester County, MA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Cobb County. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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