Kennesaw is a city in Cobb County, Georgia, United States, located in the greater Atlanta metropolitan area known as "Metro-Atlanta". Known from its original settlement in the 1830s until 1887 as Big Shanty, it became Kennesaw under its 1887 charter. According to the 2010 census, Kennesaw had a population of 29,783, but in 2019 it had a population of 34,077 showing a 14.4% increase in population over the past decade. Kennesaw has an important place in railroad history. During the Civil War, Kennesaw was the staging ground for the Great Locomotive Chase on April 12, 1862. The city is perhaps best known nationally today for its mandatory gun-possession ordinance requiring all households in Kennesaw to have a gun, with certain exceptions.
The name "Kennesaw" is derived from the Cherokee word gah-nee-sah, meaning cemetery or burial ground.
As the Western and Atlantic Railroad were being built in the late 1830s, shanty towns arose to house the workers. These were near a big spring. A grade up from the Etowah River became known as "the big grade to the shanties", then "Big Shanty Grade", and finally "Big Shanty".
Camp MacDonald, a training camp, was located there from 1861 to 1863.
During the Civil War, Big Shanty was the site of major fighting in the Battle of Kennesaw Mountain, part of the larger Atlanta Campaign. Kennesaw Mountain National Battlefield Park, located southeast of the city limits, now contains many of these historic areas. Much of the surrounding land has been developed, and many of the buried artifacts have been searched for and taken by people with metal detectors.