County ProfileGA
Cobb County
Population: 766,149 · 28 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
766,149
People
Median age
37.5
Housing
Total households
295,714
Income
Median household income
$102,738
Housing
Total housing units
314,104
Employment
Employment rate
67.1%
Education
Bachelor’s degree or higher
50.8%
Healthcare
Insured population
88%
County details
Local time 06:36:03(ET)| Name | Cobb |
|---|---|
| Total ZIP codes | 28total |
| ZIP codes (by type) | 18 Standard8 PO Box2 Unique |
| Area code | 470, 678, 770, 943 |
| Timezone | Eastern Time (ET) |
| Coordinates | 33.9399263, -84.5741102 |
| Land area | 339.7 sq miles(879.8 km²) |
Map of Cobb county, Georgia with ZIP codes
Cities and Communities in Cobb County
Compare the largest cities in Cobb County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Cobb County
Review the most populated postal areas across Cobb County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 30127 | Powder Springs | $110,904 | 68,574 |
| 30062 | Marietta | $132,631 | 66,889 |
| 30066 | Marietta | $116,074 | 62,417 |
| 30101 | Acworth | $110,774 | 61,989 |
| 30144 | Kennesaw | $88,560 | 53,984 |
| 30080 | Smyrna | $91,957 | 52,125 |
| 30064 | Marietta | $122,195 | 50,568 |
| 30067 | Marietta | $83,568 | 47,653 |
| 30152 | Kennesaw | $126,578 | 44,340 |
| 30102 | Acworth | $97,676 | 43,463 |
| 30126 | Mableton | $101,891 | 40,305 |
| 30060 | Marietta | $67,510 | 39,890 |
| 30068 | Marietta | $150,101 | 34,870 |
| 30008 | Marietta | $74,877 | 32,435 |
| 30082 | Smyrna | $120,372 | 28,323 |
| 30168 | Austell | $64,059 | 26,544 |
| 30106 | Austell | $68,881 | 24,020 |
| 30111 | Clarkdale | — | 8 |
| 30006 | Marietta | — | — |
| 30007 | Marietta | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS