As of 2026, Cobb County, Georgia has seven incorporated cities: Mableton, Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, and Austell. Mableton became the county’s seventh — and largest — city after residents voted to incorporate in November 2022, officially forming in 2023 with roughly 78,000 residents, which makes older articles that list only six cities outdated. East Cobb and Vinings, despite their name recognition, are not incorporated cities.
Many older articles still say Cobb County has six cities. That was true before 2023, but it isn’t anymore — and if you’re comparing cities in Cobb County for a move, the difference matters. This guide covers all seven cities with current population, housing, and lifestyle data, plus the well-known unincorporated communities (East Cobb, Vinings, Fair Oaks, and the Cumberland/Battery district) that confuse almost everyone relocating here.
Brown Thrasher Movers helps families move throughout metro Atlanta, including East Cobb and the greater Cobb County area.
Quick Comparison: All 7 Cities in Cobb County, GA
| City | Population (approx.) | Best Known For | Typical Home Value | Distance to Downtown Atlanta |
|---|---|---|---|---|
| Mableton | ~78,000 | Newest & largest city (inc. 2023), Six Flags, Silver Comet Trail | ~$330K–$360K | ~15 miles |
| Marietta | ~63,000 | County seat, Marietta Square, Kennesaw Mountain | ~$420K–$450K | ~20 miles |
| Smyrna | ~57,000 | Closest to Atlanta, near Truist Park & The Battery | ~$440K–$470K | ~16 miles |
| Kennesaw | ~34,500 | Kennesaw State University, Swift Cantrell Park | ~$390K–$420K | ~25 miles |
| Acworth | ~23,000 | “The Lake City” — Lake Acworth & Lake Allatoona | ~$390K–$420K | ~30 miles |
| Powder Springs | ~17,500 | Small-town feel, Silver Comet Trail access | ~$360K–$390K | ~22 miles |
| Austell | ~8,400 | Smallest city, borders Six Flags Over Georgia | ~$290K–$320K | ~18 miles |
Data note: Populations are recent Census Bureau estimates rounded for readability. Home values are approximate mid-2026 ranges; Zillow listed the countywide average home value around $430K as of mid-2026, and FMLS reported a median single-family sold price of about $460K–$485K in spring 2026. Verify current prices for any specific city or neighborhood before making decisions.
About Cobb County, Georgia
Cobb County sits immediately northwest of Atlanta and is Georgia’s third most populous county, home to roughly 780,000 residents across about 340 square miles. It’s part of the core Atlanta metro area, connected to the city by I-75, I-285, and US-41 (Cobb Parkway).
A few things make Cobb County unusual among Atlanta’s suburban counties, and the contrast is clearest when you compare it with every city and community in Forsyth County:
Much of its population lives in unincorporated areas rather than inside city limits. Famous “places” like East Cobb, Vinings, and the Cumberland district — home of Truist Park and The Battery Atlanta, where the Atlanta Braves play — are not cities at all. They’re governed directly by Cobb County, which is why the list of actual cities below is shorter than most newcomers expect.
Cobb is also one of the most educated and economically strong counties in Georgia, anchored by the Cumberland business district, Kennesaw State University, Dobbins Air Reserve Base, and the Wellstar health system.
Map of Cities in Cobb County, GA
This map of Cobb County, GA shows all seven incorporated cities along with the major highways (I-75 and I-285) that shape commutes throughout the county. Marietta sits at the county’s center, Smyrna and Mableton anchor the south end closest to Atlanta, while Kennesaw and Acworth stretch to the northwest along I-75.
Cobb County Cities at a Glance
Need the thirty-second version? Here’s which city fits which priority:
- Shortest Atlanta commute → Smyrna
- Largest city → Mableton
- Historic downtown & county seat → Marietta
- Lake living → Acworth
- College town → Kennesaw
- Best value on a detached home → Austell and Mableton
- Quiet small-town feel → Powder Springs
- Top-ranked schools → East Cobb (unincorporated — see below) and parts of Marietta/Kennesaw
Although Cobb County has only seven incorporated cities, each has a distinct character — from historic downtowns and lake communities to fast-growing suburbs at Atlanta’s edge. Here’s how they compare, largest to smallest.
1. Mableton — Cobb County’s Newest and Largest City
Population: ~78,000 | Incorporated: 2023 | Best for: value near Atlanta, trail access, buyers who want in early on a growing city | Mableton, GA map
Here’s the fact most outdated guides get wrong: Mableton is now a city, and it’s the biggest one in Cobb County. Residents voted to incorporate in November 2022, and the City of Mableton formed in 2023, electing Michael Owens as its first mayor in more than a century (Mableton had briefly been a town from 1912 to 1916). Overnight, it went from metro Atlanta’s largest unincorporated community to Cobb County’s largest city and one of the dozen largest cities in Georgia.
Mableton sits in south Cobb along the Chattahoochee River, about 15 miles from downtown Atlanta — closer than Marietta or Kennesaw. The city includes the Six Flags district and offers some of the best home values in the county, with easy access to I-285 and I-20. The Silver Comet Trail, a 61-mile paved rail-trail running from Smyrna to the Alabama line, passes directly through the city, and the Mable House Barnes Amphitheatre anchors its arts scene.
One thing for new residents to know: schools remain part of the Cobb County School District, and police, fire, and EMS are still provided by Cobb County — the young city handles zoning, permits, code enforcement, parks, and sanitation. City boundaries have also seen adjustments since incorporation as some neighborhoods pursued de-annexation, so verify whether a specific address falls inside city limits.
Move-day note: Mableton has a wide mix of housing — established ranch homes, newer townhome communities, and apartments near the river. Townhome and new-construction communities often have HOA rules about truck parking and move hours, so confirm those before booking a date.
2. Marietta — The County Seat
Population: ~63,000 | Incorporated: 1834 | Best for: historic charm, walkable square, first-time buyers, renters | Marietta, GA map
Marietta is Cobb County’s seat of government and its most recognizable city. If you’re looking for Marietta, Georgia on a map, it sits at the center of Cobb County, about 20 miles northwest of downtown Atlanta along I-75.
Marietta Square is the closest thing Cobb has to a classic downtown: a historic courthouse square ringed by restaurants, the Strand Theatre, museums, and a year-round farmers market.
The city has its own school system — Marietta City Schools — separate from the county district, which matters for families comparing addresses.
Kennesaw Mountain National Battlefield Park sits on the city’s northwest edge, giving residents 22 miles of hiking trails and Civil War history in their backyard. Housing ranges from historic bungalows near the Square to established subdivisions and a large rental market, making Marietta one of the more varied and accessible markets in the county.
Move-day note: the historic neighborhoods near Marietta Square come with mature trees, narrow streets, and older driveways — the kind of details that determine whether a full-size moving truck can get close to your door or whether your crew is doing a long carry. Worth flagging when you get a moving quote.
3. Smyrna — Closest to Atlanta
Population: ~57,000 | Incorporated: 1872 | Best for: Atlanta commuters, young professionals, Braves fans | Smyrna, GA map
Smyrna, nicknamed the “Jonquil City,” is the Cobb County city closest to Atlanta — it touches I-285, putting downtown about 16 miles away and the Cumberland business district right next door. Truist Park and The Battery Atlanta sit just outside its city limits, so Braves games, concerts, and the Battery’s restaurants are effectively a local amenity.
The city rebuilt its downtown around the Market Village, a walkable center with restaurants, a community center, and green space, and it has been one of Cobb’s fastest-growing cities for two decades.
Housing skews newer than Marietta’s, with a large share of townhomes and infill construction — and prices to match, typically the highest among the seven cities.
Move-day note: Smyrna’s townhome communities are the classic three-story-with-stairs move. Crews budget extra time for stair carries, and many communities require movers to reserve specific hours. An apartment and condo moving crew that handles this daily makes a real difference here.
4. Kennesaw — The College Town
Population: ~34,500 | Incorporated: 1887 | Best for: families, students and university staff, commuters using I-75 | Kennesaw, GA map
Kennesaw blends suburban family living with the energy of Kennesaw State University, one of Georgia’s largest universities. The city’s centerpiece is Swift Cantrell Park — 42 acres with a splash pad, skatepark, dog park, and one of the state’s largest all-inclusive playgrounds — plus a revitalizing downtown along Main Street.
The city is famous (and occasionally infamous) for its 1982 ordinance nominally requiring heads of household to own a firearm, a piece of trivia that shows up in every article about Kennesaw ever written. More practically: it offers solid schools, direct I-75 access at Barrett Parkway’s massive retail corridor, and home prices below the county’s premium areas.
Move-day note: late July and early August bring a surge of student and staff moves around KSU. If your move is tied to the university calendar, book several weeks ahead.
5. Acworth — The Lake City
Population: ~23,000 | Incorporated: 1860 | Best for: outdoor lovers, boaters, buyers wanting small-town charm | Acworth, GA map
Acworth is the only Cobb County city with real lake living. It sits on the shores of Lake Acworth and Lake Allatoona, with beaches, boat ramps, fishing, and Red Top Mountain State Park minutes away. Its restored historic downtown along Main Street has become a genuine dining destination, and the city consistently ranks among the most charming small cities in metro Atlanta.
The trade-off is distance: at roughly 30 miles from downtown Atlanta at the county’s northwest corner, Acworth is the longest commute on this list, though I-75 access softens the blow. For remote and hybrid workers, that trade increasingly looks like a bargain.
Move-day note: lakeside and hillside lots around Acworth often mean steep driveways and terraced yards. A quick walkthrough or video survey before move day lets your crew plan equipment and truck placement instead of improvising.
6. Powder Springs — Small-Town Cobb
Population: ~17,500 | Incorporated: 1838 | Best for: affordability, quiet family neighborhoods, Silver Comet Trail cyclists | Powder Springs, GA map
Powder Springs — originally “Gunpowder Springs,” named for the black, powder-like mineral sand of its seven springs — is one of Cobb’s oldest and most low-key cities. It offers larger lots and lower prices than most of the county, an expanding downtown, and direct access to the Silver Comet Trail, which draws cyclists from across the region.
The city has invested heavily in its town center in recent years, including the Thurman Springs Park event space, and its combination of affordability and west Cobb schools keeps it popular with young families priced out of East Cobb and Smyrna.
7. Austell — Small City, Big Coaster Views
Population: ~8,400 | Incorporated: 1885 | Best for: budget-conscious buyers, quick I-20 access | Austell, GA map
Austell is Cobb County’s smallest city by population, tucked into south Cobb next to Mableton. It’s best known as the neighbor of Six Flags Over Georgia (the park’s address is Austell, though the property line sits near the Mableton boundary — a favorite piece of local trivia). The city offers the lowest home prices in Cobb County, a historic small downtown, and the Sweetwater Valley youth sports scene.
For buyers who want a detached house inside metro Atlanta for under $350K — an increasingly rare thing — Austell and neighboring Mableton are two of the last realistic places to look.
What About East Cobb? (It’s Not a City)
This surprises almost everyone: East Cobb is not an incorporated city. It’s a large, affluent unincorporated area of Cobb County — home to more than 150,000 people, some of metro Atlanta’s most sought-after public schools (the Walton, Pope, and Lassiter high school districts), and home prices that rival or exceed anywhere else in the county.
East Cobb residents actually voted on cityhood in 2022, in the same election cycle that created Mableton — and the East Cobb referendum failed decisively, as did similar proposals for Vinings and Lost Mountain. So East Cobb remains governed directly by Cobb County, and residents typically have Marietta mailing addresses even though they don’t live inside Marietta city limits.
None of that makes East Cobb any less real as a community — it has a stronger identity than many actual cities. If you’re relocating to the Walton or Pope school districts, our East Cobb moving services page covers what to expect from a move in this area, from established subdivisions with mature trees to HOA logistics.
Other Well-Known Places in Cobb County That Aren’t Cities
Vinings — an upscale historic community just inside I-285 across the river from Buckhead. Its cityhood referendum also failed in 2022, so it remains unincorporated. Expect the highest home prices in the county.
Fair Oaks — a small, densely populated census-designated place wedged between Marietta and Smyrna. Residents carry Marietta or Smyrna addresses.
Cumberland / The Battery — Cobb’s edge-city business district near the I-75/I-285 interchange, home to Truist Park, the Cobb Energy Performing Arts Centre, and Cumberland Mall. It’s a major apartment and office hub, entirely unincorporated.
Note: since Mableton’s 2023 incorporation absorbed much of south Cobb, Mableton itself no longer belongs on the “not a city” list — the biggest single change to Cobb County’s map in a century.
Cobb County City Incorporations: A Quick Timeline
- 1834 — Marietta incorporated (two years after Cobb County’s creation)
- 1838 — Powder Springs
- 1860 — Acworth
- 1872 — Smyrna
- 1885 — Austell
- 1887 — Kennesaw
- 1912–1916 — Mableton’s first, short-lived incorporation (undone after a flood bankrupted the young town)
- November 2022 — Mableton residents vote to incorporate; East Cobb, Vinings, and Lost Mountain referendums fail
- 2023 — City of Mableton officially forms and elects its first mayor in over 100 years, becoming Cobb County’s seventh and largest city
FAQ: Cities in Cobb County, GA
How many cities are in Cobb County, GA?
Cobb County has seven incorporated cities as of 2026: Mableton, Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, and Austell. Older sources list six cities, but Mableton incorporated in 2023.
What cities are in Cobb County?
The seven cities in Cobb County, Georgia are Mableton, Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, and Austell. Mableton, incorporated in 2023, is the newest and largest of the seven.
What is the largest city in Cobb County?
Mableton is the largest city in Cobb County, with roughly 78,000 residents. Marietta (~63,000) is second and remains the county seat.
What is the newest city in Cobb County?
Mableton, which residents voted to create in November 2022. The city officially formed in 2023 — the first new city in Cobb County in more than a century.
Is East Cobb a city?
No. East Cobb is an unincorporated area of Cobb County. A 2022 referendum to make East Cobb a city failed, so it remains governed directly by Cobb County, and most residents have Marietta mailing addresses.
Is Vinings a city?
No. Vinings is an unincorporated community in Cobb County. Its 2022 cityhood referendum also failed.
What is the county seat of Cobb County?
Marietta is the county seat of Cobb County and has been since the county’s early years in the 1830s.
What towns are in Cobb County, GA?
Georgia doesn’t legally distinguish between “towns” and “cities,” so Cobb County’s towns are its seven cities: Mableton, Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, and Austell. Well-known communities like East Cobb, Vinings, Fair Oaks, and Cumberland are unincorporated areas, not towns.
How many people live in Cobb County?
Roughly 780,000 people, making Cobb the third most populous county in Georgia after Fulton and Gwinnett, according to recent U.S. Census Bureau estimates.
Planning a Move to Cobb County?
Whichever Cobb County city (or famous non-city) you’re headed to, the logistics differ more than people expect — gated East Cobb subdivisions, three-story Smyrna townhomes, lakeside Acworth driveways, and brand-new Mableton communities each come with their own move-day realities.
Brown Thrasher Movers serves families across metro Atlanta and North Georgia:
- East Cobb moving services
- Local residential moving
- Apartment, condo & townhome moving
- Long-distance & interstate moving
- All areas we serve
Sources checked for accuracy: City of Mableton, Cobb County Government, U.S. Census Bureau, Georgia Municipal Association, Zillow Cobb County home values, Marietta City Schools, and Cobb County School District. Population figures are recent Census estimates; home values are mid-2026 approximations and change with the market.
