This Cobb County Georgia map locates the county immediately northwest of Atlanta and labels Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, and Austell. The accompanying guide explains how central Marietta, the Allatoona corridor in the northwest, the Cumberland–Chattahoochee corridor in the southeast, and the Powder Springs–Austell corridor in the southwest fit together.
Table of Contents
Download the Cobb County map
The image on the page is intended for screen viewing; the button links to a JPG suitable for print layouts and document insertion.
- Coverage: County outline and six selected city labels
- Download format: JPG
Quick Facts
| State and FIPS code | Georgia; 13067 |
|---|---|
| County seat | Marietta |
| Established | 1832 |
| 2025 population estimate | 793,345 |
| 2020 census population | 766,149 |
| Land area | 339.78 square miles |
| Adjacent counties | Cherokee, Fulton, Douglas, Paulding, and Bartow |
| Places labeled | Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, and Austell |
| Current incorporated cities | The six above plus Mableton; seven total |
| Major corridors | I-75, I-285, I-575, and US 41 |
| Download format | JPG |
The U.S. Census Bureau estimates 793,345 residents in 2025, about 3.5 percent above the 2020 census count of 766,149. The 2020 density was 2,254.8 people per square mile across 339.78 square miles of land. Those figures describe the entire county, not any one city or the unincorporated area alone.
What the Map Shows
The place labels establish a useful directional pattern. Marietta anchors the center. Kennesaw lies to its northwest, and Acworth sits farther northwest near the Bartow and Cherokee sides of the county and the Allatoona area. Smyrna is southeast of Marietta, Powder Springs is southwest, and Austell occupies the southern edge toward Douglas and Fulton counties.
A county line is not a collection of city limits. Cobb also contains widely recognized unincorporated area names such as East Cobb, Vinings, and Cumberland, together with postal address areas that may not match legal municipal jurisdiction. Roads, parcels, school attendance zones, voting districts, flood hazards, and utility service boundaries require the current GIS layer maintained by the responsible agency.
Mableton requires a specific date caveat. Cobb County’s current official information lists seven incorporated cities, including Mableton, while the supplied image labels the six previously established cities. The absence of a Mableton label therefore does not mean that it remains unincorporated. Current city limits should be checked through municipal or county GIS.
County Layout and Location
Cobb adjoins Atlanta on the northwest. Fulton County meets much of its eastern and southeastern side; Cherokee lies north, Bartow northwest, Paulding west, and Douglas southwest. I-75 runs from the Cumberland area through Marietta and northward. I-285 forms part of the metropolitan beltway in southeastern Cobb, and I-575 branches north toward Cherokee County. US 41, locally known as Cobb Parkway, is the older surface corridor linking Smyrna, Marietta, Kennesaw, and Acworth.
The county does not function as a single ring around Marietta. County government and an older downtown concentrate in the center; Smyrna and Cumberland respond strongly to the I-75/I-285 interchange and proximity to Atlanta; Kennesaw and Acworth form a northwestern corridor; and Powder Springs and Austell organize the southwestern side. Mableton now forms an incorporated southern sector between Austell and the Fulton line.
A major drainage divide crosses Cobb. Sope Creek and other eastern tributaries flow toward the Chattahoochee River and the Apalachicola–Chattahoochee–Flint basin. In northern Cobb, Noonday Creek continues toward the Little River and Allatoona Lake, placing it in the Etowah–Coosa system. The Sweetwater Creek drainage adds a third geographic reference in the southwest. Rain falling within one county can therefore leave by markedly different basin routes.
Cochran Shoals and Sope Creek are National Park Service units along the Chattahoochee corridor on Cobb’s eastern side. In the northwest, Allatoona Lake is a federal multipurpose reservoir on the Etowah River, and U.S. Army Corps of Engineers shoreline maps include a Cobb County section. Both edges are prominent water landscapes, but they do not belong to the same river system.
Local Context
Cobb County was created in 1832 from Cherokee lands and named for lawyer and politician Thomas Willis Cobb. Settlement at Marietta began in 1833, and it became the county seat in 1834. Big Shanty, later renamed Kennesaw, developed as a rail settlement along Noonday Creek. Springville became Powder Springs, while Acworth, Smyrna, and Austell emerged as distinct nineteenth-century communities tied to transportation and local commerce.
The 1864 Battle of Kennesaw Mountain was a major action in the Atlanta Campaign. The ridges around Kennesaw Mountain and Marietta are more than a historic backdrop: they illustrate how the rolling Upper Piedmont landscape shaped movement and settlement. Railroads, later highway construction, and postwar suburbanization transformed Cobb from a predominantly rural county into a densely settled part of metropolitan Atlanta.
Growth has not produced identical districts. Cumberland has a large concentration of offices, retail, lodging, and event facilities. Marietta combines county administration, health services, and a historic center. Kennesaw’s corridor includes Kennesaw State University and extensive residential and employment development. Western and southwestern Cobb retain older town centers beside newer subdivisions. Countywide averages consequently conceal substantial differences in commuting, land use, and redevelopment pressure.
Ways to Use This Map
- Orient the cities: Use Marietta as the center point, then separate the Acworth–Kennesaw northwest corridor from the Smyrna–Austell–Powder Springs southern arc.
- Add transportation: Locate I-75, I-285, I-575, and US 41 on an official road layer and compare them with the labeled places.
- Compare watersheds: Trace the Chattahoochee, Sope Creek, Noonday Creek, and Allatoona Lake on a hydrology layer to identify the drainage divide.
- Study settlement: Pair Marietta, Kennesaw Mountain, and the early railroad communities to examine how transport influenced nineteenth-century growth.
- Confirm jurisdiction: Resolve addresses, parcels, school zones, flood status, or utility service with the latest county or municipal dataset.
When placing the image in a report, note its purpose and date context. A short annotation that Mableton is not labeled, unincorporated communities are omitted, and city limits are not depicted prevents the county outline from being mistaken for municipal jurisdiction. Navigation and emergency response demand a live address-based service rather than this static reference.
Frequently Asked Questions
How many incorporated cities are now in Cobb County?
Cobb County’s official newcomer information lists seven: Acworth, Austell, Kennesaw, Mableton, Marietta, Powder Springs, and Smyrna. The supplied image labels six and omits Mableton, so it should not be treated as a complete current municipality list.
Are the Chattahoochee River and Allatoona Lake in the same watershed?
No. Much of eastern Cobb drains toward the Chattahoochee, while the Noonday Creek area in northern Cobb drains toward Allatoona Lake and the Etowah River. They occupy different sides of a major basin divide.
Why are Cumberland, Vinings, and East Cobb not labeled?
Those names are important in everyday descriptions of Cobb, but the image limits its labels to selected incorporated cities. Unincorporated place names and postal addresses do not necessarily correspond to legal city limits, so jurisdiction should be verified in official GIS.
Sources
- U.S. Census Bureau QuickFacts, original table and 2025 update
- Cobb County Government: history and county overview and current list of seven cities
- National Park Service: Chattahoochee River National Recreation Area maps and Sope Creek background
- U.S. Army Corps of Engineers: Allatoona Lake and Cobb shoreline mapping
- New Georgia Encyclopedia county profile
- Georgia Department of Community Affairs planning records
Population and area values follow the Census Bureau’s stated reference years. The city list and chronology were rechecked against Cobb County Government, while river and reservoir details were compared with National Park Service and U.S. Army Corps of Engineers material. Administrative boundaries and estimates change, so consult the dated source dataset before making a legal determination or quoting a current statistic.
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