Dayton is the 6th largest city in the U.S. state of Ohio and the county seat of Montgomery County, the fifth most populous county in the state. The population was 141,527 at the 2010 census. The Dayton Metropolitan Statistical Area had a population of 841,502 in the 2010 census. As of the 2010 census, Dayton is the fourth largest metropolitan area in Ohio and the 61st largest metropolitan area in the United States.
The Dayton-Springfield-Greenville Combined Statistical Area had a population of 1,072,891 in 2010 and is the 43rd largest combined statistical area in the United States. Dayton is situated within the Miami Valley region of Ohio, just north of the Cincinnati metropolitan area. Dayton is within 500mi (805km) of 60% of the population and manufacturing capacity of the U.S. and so is defined as one of only two major logistics centroids in the United States.
It plays host to significant industrial, aerospace, and technological/engineering research activity and is known for the many technical innovations and inventions developed there. Much of this innovation is due in part to Wright-Patterson Air Force Base and its place within the community. With the decline of heavy manufacturing, Dayton's businesses have diversified into a service economy, including the insurance and legal sectors and most importantly the healthcare and government sectors.
Tourists visiting Montgomery County accounted for $1.7 billion in business activity in 2007. Tourism also accounts for 1 out of every 14 private sector jobs in the county. Tourism in the Dayton region is led by The National Museum of the United States Air Force at nearby Wright-Patterson Air Force Base. It is the largest and oldest military aviation museum in the world. The museum draws over 1.3 million visitors per year and is one of the single most visited tourist attractions in Ohio. The museum houses the National Aviation Hall of Fame.
Other museums also play significant roles in the tourism and economy of the Dayton area. The Dayton Art Institute, a museum of fine arts, owns collections containing more than 20,000 objects spanning 5,000 years of art and archaeological history. The Dayton Art Institute was rated one of the top 10 best art museums in the United States for children. Dayton is also home to a children's museum. The Boonshoft Museum of Discovery is a local children's museum of science with numerous exhibits, one of which includes an indoor zoo with nearly 100 different animals.
Some historical museums also have notability in the region. The Dayton Aviation Heritage National Historical Park, operated by the National Park Service, commemorates the lives and achievements of Dayton natives Orville and Wilbur Wright and Paul Laurence Dunbar. The Wright brothers' famous Wright Flyer III aircraft is housed in a museum at Carillon Historical Park. Dayton is also home to America's Packard Museum with contains many restored historical Packard vehicles. Another notable park, SunWatch Indian Village/Archaeological Park is located on the south end of Dayton. SunWatch is a partially reconstructed 12th-century prehistoric American Indian village; the village is organized around a central plaza dominated by wood posts forming an astronomical calendar. It includes a museum where visitors can learn about the Indian history of the Miami Valley.