| City: | Clarkdale, Georgia |
| County: | Cobb County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:13:52 PM |
| Population: | 8 [See All] |
| Area Codes: | 678 / 770 / 943 |
| Classification: | PO Box |
| Coordinates: | 33.8274, -84.6568 |
| Land Area: | 0.407 sq mi |
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Clarkdale occupies a tiny 0.08 square mile footprint in Cobb County, Georgia, west of Atlanta. Only 8 people live within the official ZIP code boundary, yet the Clarkdale post office maintains 202 PO Boxes. That's 67 boxes for every household. This ratio tells the real story: Clarkdale's post office serves the surrounding Atlanta suburbs, not just its 3 households.
The post office sits along Austell Powder Springs Road, the main corridor through this area. Nearby subdivisions like Mosley Chase, Sweetwater Plantation, Cureton, and Hillsdale all use the Clarkdale ZIP for PO Box service. It's a PO Box Only Zone, meaning there's no carrier delivery alternative within this ZIP's boundaries. Residents who want a 30111 address must use a PO Box.
This isn't rural isolation. Clarkdale sits squarely in metro Atlanta, surrounded by the city of Austell. The mixed delivery pattern (2 city routes, 1 rural route) serves addresses that technically fall within other ZIP codes but pick up mail here. Street names like Newark Ave and Bloomfield Ave suggest the neighborhood's early 20th century origins.
The median age of 28 and all owner-occupied housing point to a stable, small residential pocket that has kept its identity even as Atlanta sprawled around it. The post office functions as a community anchor, serving far more people than officially live within its boundaries.
Austell Powder Springs Road serves as the main thoroughfare, while residential avenues like Newark and Bloomfield suggest early 20th century subdivision development.
ZIP Code 30111 has 8 residents and 3 households (average 2.67 persons per household). The median age is 28.0 years, significantly younger than the state (37.5) and significantly younger than the nation (38.8). The gender split is 25.0% male and 75.0% female, which is much lower than the national male share (49.1%), making this a female-majority area. Largest groups are Black or African American (25.0%, much higher than the national average of 12.4%) and Hispanic or Latino (25.0%); Hispanic or Latino residents make up 25.0%, which is much higher than the state average (10.5%), and Black or African American share is much higher than the national average (12.4%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 8Source: Census DHC |
| 2024 ACS Population Estimate: | 0Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 19.7 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 3Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 2.67Source: Census DHC |
| Average Family Size: | 2.00Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Decennial Census | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 8 | -- | -- | -- | -- |
Median Age: 28
Male Median Age: 34
Female Median Age: 28
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Female | 1 | 1 | 0 | 0 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 1 | 1 | 0 | 1 | 0 | 3 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| White: | 1 | 20.00% |
| Black: | 2 | 40.00% |
| Hispanic:* | 2 | 40.00% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 5 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 2 | 25.00% | 34.0 years |
| Females: | 6 | 75.00% | 28.0 years |
| Total: | 8 | 100% | 28.0 years |
| Native, born in the United States: | 0 | 0% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0% |
| Foreign born, naturalized U.S. citizen: | 0 | 0% |
| Foreign born, not a U.S. citizen: | 0 | 0% |
| Total Population: | 0 | 100% |
| Total Native Population: | 0 | 0% |
| Total Foreign-born Population: | 0 | 0% |
ZIP Code 30111 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 5 people with an annual payroll of $83,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 536Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $20,000Source: CBP |
| Annual Payroll: | $83,000Source: CBP |
| # of Employees: | 5Source: CBP |
ZIP Code 30111 is located in Cobb County, Georgia, within the Atlanta-Sandy Springs-Roswell, GA Metropolitan Statistical Area (CBSA 12060) and Georgia's 14th Congressional District. This Metro area has a population of 5,268,860 people, about 0.00% of whom live in ZIP Code 30111, and is subdivided into the Marietta, GA division. It covers 0.407 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Atlanta-Sandy Springs-Roswell, GASource: Census |
| CBSA Number: | 12060Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Marietta, GA (CBSA Div 31924)Source: Census |
| CBSA Population: | 5,268,860Source: Census |
| MSA: | Atlanta, GA MSASource: Census |
| Land Area: | 0.407 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 14Source: USPS |
| Congressional Land Area: | 3623.16 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 30111 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.