Tennessee's population growth is a fascinating story of suburban expansion, job creation, and the appeal of smaller cities with room to absorb new residents. The state's fastest-growing places are not just adding residents; they are reshaping where daily life in the state is taking root. Middle Tennessee, particularly the Nashville region, is at the heart of this growth, but it is pushing outward into surrounding counties and even farther into places like Putnam County. This growth is being shaped by a variety of factors, including housing demand, traffic pressure, school enrollment, road projects, new subdivisions, and commercial development.
One of the most striking examples of this growth is Lebanon, which has shifted from a small county seat to one of Middle Tennessee's major growth centers. The city grew from 38,431 residents in the 2020 Census to an estimated 51,501 in 2024, a 33.8% increase in just four years. This growth is fueled by easy access to I-40, available land, and a job corridor that includes logistics, manufacturing, and distribution. Local reporting has described Lebanon as a city of about 51,000 dealing with rapid growth and the challenge of holding onto its small-town identity.
Murfreesboro remains one of Tennessee's most important growth centers. The city grew from 152,769 residents in the 2020 Census to 168,387 in the 2024 estimate, and newer county-level numbers show Rutherford County added another 6,266 residents from July 2024 to July 2025. This growth is driven by far more than commuters heading into Nashville. Middle Tennessee State University has enrollment of more than 20,000, and the city's economic development office frames MTSU as a major workforce asset. Rutherford County's growth is also bolstered by the broader Smyrna-La Vergne-Murfreesboro employment corridor, which includes manufacturing, logistics, healthcare, and higher education.
Clarksville stands apart from many of Tennessee's fast-growing cities because it has its own economic engine. The city grew from 166,722 residents in the 2020 Census to 185,690 in 2024, an 11.4% increase. Montgomery County added 3,654 residents from July 2024 to July 2025, ranking sixth in Tennessee for total population growth. Fort Campbell still shapes Clarksville's economy, but recent manufacturing growth has added another major force behind the city's expansion. A 2025 industrial park announcement described 2.1 million square feet of planned industrial space near the $3.2 billion LG Chem plant, with Clarksville home to industrial tenants such as LG Electronics, Hankook Tire, Google, Bridgestone and Amazon.
Spring Hill's population grew from 50,687 in the 2020 estimate base to 59,398 in 2024, according to the Census subcounty estimates. This growth is mostly tied to Williamson and Maury counties. Nashville's southward expansion is visible here, where farmland is giving way to new subdivisions, commuter traffic, and major job sites. Ultium Cells says its Spring Hill facility began production in February 2024 and continues to ramp up along Highway 31 between Spring Hill and Columbia. In 2026, the company also announced a $70 million investment in retooling for LFP battery production. This gives Spring Hill both commuter appeal and an industrial spine.
Mount Juliet grew from 39,289 residents in the 2020 Census to 44,066 in the 2024 estimate, a 12.1% increase. Wilson County's 2025 numbers reinforced that pattern, with the county adding 4,693 residents from July 2024 to July 2025. This was the third-largest numeric gain in Tennessee and the fourth-fastest percentage gain statewide. Mount Juliet's growth is easy to trace through its direct access to I-40, commuter rail service through the WeGo Star, and major retail at Providence Marketplace. It also has large-scale employment nearby, including Amazon's Mount Juliet fulfillment center, which the company described as an 855,000-square-foot robotics facility when it announced the project.
Columbia grew from 41,690 residents in the 2020 Census to 48,812 in 2024, with Census QuickFacts showing a 17.3% increase from the 2020 estimate base. Maury County's growth reinforces the city-level trend since the county added 3,675 residents from July 2024 to July 2025 and was one of the few top-growth counties to accelerate over the previous year. Columbia is growing along the same southward corridor as Spring Hill, but it offers more than just being farther down the road from Nashville. The local draw is a mix of lower housing costs compared with Williamson County, downtown reinvestment, and proximity to the Spring Hill industrial corridor. Columbia State Community College, the Maury Regional medical presence, and the historic downtown square give the city more local structure than a pure commuter town.
Franklin grew from 83,548 residents in the 2020 estimate base to 89,142 in 2024, a 6.7% increase. This growth rate is slower than Lebanon's or Columbia's, but Franklin is already large, built out in many places, and expensive. Williamson County added 3,575 residents from July 2024 to July 2025, ranking it seventh in the state for numeric gain. Franklin's growth is driven by a different set of factors, including high-performing schools, corporate offices, healthcare access, and the established Cool Springs job center. In Franklin, growth is less about wide-open expansion and more about steady pressure around places that are already built up, especially near Cool Springs, downtown, and the city's higher-demand neighborhoods. CoolSprings Galleria, Harlinsdale Farm, and the downtown Main Street district are major anchors that help explain Franklin's continued demand.
Cookeville grew from 34,842 residents in the 2020 Census to 37,102 in 2024, a 6.5% increase. It's located in Putnam County, which added 1,601 residents from July 2024 to July 2025, marking its largest annual increase since 2006. The Tennessee State Data Center specifically pointed to Putnam as the notable county just outside the 2025 top ten. The Cookeville micropolitan area ranked fourth nationally for numeric growth among U.S. micropolitan areas. This growth reflects a different kind of move. People are choosing a smaller regional center with I-40 access, lower costs than the biggest metros, and a strong institutional base. Tennessee Tech University gives Cookeville a steady educational and employment anchor. Cookeville Regional Medical Center supports the area's healthcare role. Cookeville functions as a regional center in its own right with institutions and services that support growth beyond simple commuter demand.
