There is one unique ZIP code in Franklin, Ohio and it is 45005. Area code: 937/513.
1
ZIP codes
36.64
sq mi land
0.58
sq mi water
937/513
area code
Franklin, OH ZIP code map
About Franklin, OH
Franklin, Ohio is a vibrant city located in Warren County in the southwestern part of the state, carrying a rich industrial and community heritage that spans nearly two centuries. Served by a single ZIP code — 45005 — Franklin offers residents and visitors a tightly knit small-city experience with convenient access to the greater Dayton and Cincinnati metropolitan areas. The city sits along the Great Miami River, giving it a scenic natural backdrop that complements its active downtown and established neighborhoods.
Location & geography
Franklin lies in Warren County in southwestern Ohio, positioned roughly midway between Dayton to the north and Cincinnati to the south along the Interstate 75 corridor. Neighboring cities include Middletown approximately 7 miles to the southwest, Springboro about 10 miles to the north, Lebanon roughly 12 miles to the east, and Dayton approximately 25 miles to the north. The city covers a total land area of 73.27 square miles and a water area of 1.16 square miles, with the Great Miami River serving as the most prominent natural water feature shaping the local landscape and terrain.
Community & economy
Franklin has the welcoming character of a classic Midwestern river city, where long-established neighborhoods coexist with small businesses, local restaurants, and community parks along the riverfront. Historically driven by manufacturing — particularly paper and textile production — the local economy today includes a mix of light industry, retail, healthcare services, and proximity to the larger employment centers of Dayton and Cincinnati. Daily life in Franklin revolves around community events at Donovan Park, recreation along the Great Miami River, and the many local businesses that line Main Street and nearby corridors.
Transportation
Franklin is conveniently connected to the regional highway network via Ohio State Route 73, which runs directly through the city, and Interstate 75, which passes just to the west and provides swift north-south access toward Dayton and Cincinnati. U.S. Route 127 also serves the broader region, and the city's central location makes commuting to surrounding urban centers practical for residents. The nearest major commercial airport is Dayton International Airport, located approximately 25 miles to the north, offering a full range of domestic flight connections.
History
Franklin was founded in the early 19th century and incorporated as a city in 1868, growing steadily along the banks of the Great Miami River thanks to its advantageous position for commerce and transportation. The city became well known for its paper manufacturing industry, with mills along the river helping to establish Franklin as an important industrial center in southwestern Ohio for well over a century. Over the decades, Franklin evolved from a primarily industrial town into a more diverse community while still honoring its manufacturing roots and historical architecture found throughout its downtown district.
Did you know?
Franklin, Ohio is one of the few smaller Ohio cities that has sustained a continuous identity as a named municipality distinct from its larger neighbors, even as regional growth from Dayton and Cincinnati expanded around it. The Great Miami River, which once powered the city's historic mills, today serves as a recreational asset for kayaking, fishing, and trail use along the Miami Valley Trail system.
