Thomas County, located in southwest Georgia and bordering Florida, was formed December 23, 1825 by legislation introduced by Thomas Jefferson Johnson, owner-builder of Pebble Hill Plantation. Thomasville was named the seat of Thomas Country on December 22, 1826. They were both named for Major General Jett Thomas, a patriot of the War of 1812 and builder of the Old State Capitol at Milledgeville and Franklin College in Athens, which became the University of Georgia. Thomasville was incorporated by an act of the Georgia Assembly on December 26, 1831.

Electricity arrived in Thomasville, marking a major step forward in the city's growth and modernization. A group of private investors installed the community's first generator at the Thomasville Variety Works on Stevens Street. Though it powered only 50 lights, this early system helped illuminate the future of Downtown Thomasville.

Building on the arrival of electricity in 1889, the City of Thomasville officially purchased the private generator from the Thomasville Electric Light and Gas Company for $32,000. By combining the existing water system with the new electric plant, the city formed the Water and Light Department and hired Mr. D.R. Pringle as its first superintendent. At the time, power was exclusively a nighttime luxury, generated by burning coal and light oil.

Driven by a local passion for gardening, Thomasville hosted its very first annual Rose Show. Organized by local citizens and garden enthusiasts, the event quickly grew from a modest community exhibition into a premier regional attraction. This deep-rooted floral heritage laid the groundwork for Thomasville’s identity, eventually leading to its official designation as Georgia’s "Rose City."

Following a brief hiatus during World War II, Thomasville's celebration blossomed into a full multi-day Rose Festival. The event expanded beyond the traditional flower judging to include elaborate parades featuring elaborate, themed floats, marching bands, and the crowning of the Rose Queen. The festival became a cornerstone of community pride, drawing tens of thousands of visitors to the downtown district every April.

As mid-century suburban sprawl threatens historic downtowns nationwide, Thomasville fights back. The city becomes one of the very first communities selected to participate in the Georgia Main Street Program. This sparks a massive, multi-decade wave of historic preservation, storefront restoration, and economic revitalization.

Thanks to its fierce dedication to preserving its Victorian architecture and hand-laid bricks, Thomasville wins the prestigious Great American Main Street Award from the National Trust for Historic Preservation, cementing its reputation as a national blueprint for downtown revitalization.