Marietta had 63,574 residents on July 1, 2025, the Census Bureau estimates, up 12.4% since 2010. Age, income, households and housing figures.
Last checked Oct. 5, 2026. Every figure on this page comes from the U.S. Census Bureau and is linked to the table it came from. Questions about Census data: the Census Bureau’s customer line, 1-800-923-8282. This page is updated when the bureau publishes new figures.
Marietta had an estimated 63,574 residents on July 1, 2025, according to the Census Bureau’s Vintage 2025 city and town population estimates. That is 2,602 more people (4.3%) than the 2020 census count of 60,972 and 6,995 more (12.4%) than the 2010 census count of 56,579. The Census Bureau’s QuickFacts page for Marietta summarizes the same releases. Marietta is the county seat of Cobb County.
What this means for you
- Marietta is growing steadily: the estimate has risen every year since 2021.
- Marietta is younger than Cobb County as a whole and rents more: about 53% of households rent, against 33% countywide.
- The median household income is about $30,000 below the county’s.
Marietta’s population since 2010
The 2010s added 4,393 residents, a rise of 7.8%. The bureau’s yearly estimates for the city, each as of July 1, show growth picking up after 2021:
| Year | Estimated residents |
|---|---|
| 2020 | 61,046 |
| 2021 | 61,458 |
| 2022 | 62,884 |
| 2023 | 63,217 |
| 2024 | 63,359 |
| 2025 | 63,574 |
Source: Census Bureau, Vintage 2025 subcounty population estimates for Georgia.
Who lives in Marietta
From the Census Bureau’s 2020-2024 American Community Survey five-year estimates, compared with Cobb County:
| Measure | Marietta | Cobb County |
|---|---|---|
| Median age | 34.8 | 37.5 |
| Under 18 | 21.4% | 22.6% |
| 65 and older | 13.9% | 13.7% |
| Households | 24,707 | 295,714 |
| People per household | 2.40 | 2.59 |
| Median household income | $72,725 | $102,738 |
| Below the poverty line | 12.8% | 8.7% |
| Adults 25+ with a bachelor’s degree or higher | 47.4% | 50.8% |
| Born outside the United States | 18.1% | 16.5% |
American Community Survey figures are estimates from a sample, averaged over 2020 to 2024, and carry a margin of error. They describe the period, not a single year.
Housing
| Measure | Marietta | Cobb County |
|---|---|---|
| Housing units | 26,783 | 314,104 |
| Households that own their home | 47.2% | 67.0% |
| Median value of owner-occupied homes | $448,500 | $407,200 |
| Median gross rent | $1,586 a month | $1,730 a month |
The home value figure is what owners told the survey their home was worth, averaged over 2020 to 2024. For current market values, see our home prices guide.
Marietta and its neighbors
| Place | 2010 census | 2020 census | 2025 estimate | Change since 2020 |
|---|---|---|---|---|
| Marietta | 56,579 | 60,972 | 63,574 | +4.3% |
| Smyrna, about seven miles southeast | 51,271 | 55,663 | 57,513 | +3.3% |
| Kennesaw, about seven miles northwest | 29,783 | 33,036 | 37,970 | +14.9% |
| Cobb County | 688,078 | 766,149 | 793,345 | +3.5% |
Among Cobb County’s cities, only Mableton, estimated at 78,820, had more residents than Marietta in 2025. Kennesaw grew fastest of the three cities since 2020. Median household income is higher in both neighbors: $100,061 in Smyrna and $83,356 in Kennesaw, against $72,725 in Marietta, in the 2020-2024 survey.
Sources: 2010 census, 2020 census, Vintage 2025 estimates and the 2020-2024 American Community Survey.
Method
Population totals are the 2010 and 2020 census counts and the Census Bureau’s July 1 estimates, Vintage 2025. Age, income, households, education, birthplace and housing are 2020-2024 American Community Survey five-year estimates for the city of Marietta (Census place 1349756), which covers only the area inside the city limits. Percentages for owners and poverty are calculated from the survey’s counts. We do not adjust or project any figure.
Related guides: home prices, schools and moving to Marietta.
Frequently asked questions
What is the population of Marietta, Georgia?
The Census Bureau estimates Marietta had 63,574 residents on July 1, 2025. The 2020 census counted 60,972.
How fast is Marietta growing?
Marietta grew 7.8% between the 2010 and 2020 censuses, from 56,579 to 60,972, and the bureau estimates another 4.3% growth from 2020 to 2025.
What is the median household income in Marietta?
The median household income in Marietta was $72,725 in the Census Bureau’s 2020-2024 American Community Survey, compared with $102,738 for Cobb County.
How many households are in Marietta?
Marietta has about 24,707 households, with an average of 2.40 people each, according to the 2020-2024 American Community Survey. About 47% of them own their home.
What is the population of Cobb County, Georgia?
The Census Bureau estimates Cobb County had 793,345 residents on July 1, 2025, up 3.5% from the 2020 census count of 766,149.
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