If you live in Atlanta, visit regularly, or are just curious about how this city came to be, you’ll quickly discover that Atlanta doesn’t have a simple “birthday.” Instead, it has a few key dates that mark its transformation from a railroad crossing in the woods to the capital of Georgia.
Here’s the clear answer, followed by the context that makes it make sense for anyone in Atlanta today.
When people ask “When was the city of Atlanta founded?”, they’re usually talking about three connected milestones:
| Milestone | Date | What Happened | Name Used |
|---|---|---|---|
| Railroad terminus chosen | 1837 | State engineers marked the end of the Western & Atlantic Railroad | No real town yet |
| “Marthasville” named | 1843 | The small settlement around the tracks was officially named Marthasville | Marthasville |
| City of Atlanta incorporated | December 29, 1847 | The Georgia legislature officially incorporated the City of Atlanta | Atlanta |
So, when you see Atlanta’s founding date, the most commonly accepted civic “birthday” is:
But to understand why that date matters—and why 1837 and 1843 still show up in local history—it helps to walk through how Atlanta actually started.
Long before anyone talked about Atlanta, Georgia, this area was home to Native American communities, including the Muscogee (Creek) and Cherokee peoples. The land that now holds:
was part of their homelands until forced removal and land lotteries in the early 1800s pushed them away.
If you live here now, you’re on land that shifted from Native territory to state-controlled land, then to private ownership, and finally into a fast-growing transportation hub.
You can see echoes of this history in and around:
The true origin of Atlanta starts with railroads, not city planners.
In 1837, state engineers picked a spot in north Georgia as the terminus (end point) of the Western & Atlantic Railroad. This railroad was designed to connect the interior of Georgia to the Chattahoochee River and larger markets.
A simple stake in the ground—reportedly called the “Zero Mile Post”—marked where the rail line would end. That point was near what is now:
At that moment in 1837:
So, some people say “Atlanta began in 1837” because that’s when the location was chosen. But it was still more of a worksite than a city.
As workers built out the railroad, a small community formed around the end of the line. It was often simply called “Terminus,” because that’s what it was: the end of the Western & Atlantic line.
By the early 1840s:
In 1843, the community was officially named “Marthasville”, reportedly in honor of Martha Lumpkin, the daughter of former Georgia Governor Wilson Lumpkin, who was involved with the railroad effort.
If you’re walking around modern Atlanta and see mentions of “Terminus” (like business names) or “Marthasville” in local history displays, this is why—those were the pre-Atlanta names for the same general place.
The name “Atlanta” began to catch on in the mid-1840s, likely tied to its role as a rail junction and a shortened version of references to the Western & Atlantic Railroad.
The key legal moment came on:
From this date forward:
This is why, when people ask “When was the city of Atlanta founded?”, historians, tour guides, and many local institutions point to 1847, and specifically December 29, 1847, as the city’s official founding.
If you visit government buildings like Atlanta City Hall (55 Trinity Ave SW, Atlanta, GA 30303), this is the date you’re most likely to see referenced as Atlanta’s origin as a city.
Here’s a quick, Atlanta-focused summary you can refer back to:
For civic and historical purposes in Atlanta, 1847 is typically recognized as the founding year, and December 29 as the official incorporation date.
If you’re in Atlanta and want to connect these dates to real places, there are several spots where the city’s founding story is still visible.
This is essentially ground zero for Atlanta’s beginnings.
Walking around Downtown, you’re very close to where Terminus became Marthasville, and Marthasville became Atlanta.
For residents or visitors, it’s one of the easiest ways to get a big-picture view of how Atlanta formed and changed.
Knowing when Atlanta was founded is more than just a trivia fact—it helps make sense of the city you live in or visit today:
If you’re attending an event, museum tour, or local history talk in the city, you’ll usually hear 1847 described as the key founding year.
If you ever need to explain this to someone—maybe a visitor, a new neighbor, or a student—here’s a crisp, Atlanta-focused way to say it:
So, when someone asks, “When was the city of Atlanta founded?” the most accurate, commonly accepted answer in Atlanta is:
