Before 1788
Earthworks, then a contested hunting ground
The Ohio Valley was not empty land waiting for a survey. Adena and Hopewell peoples built burial mounds and geometric earthworks across the region between roughly 800 BCE and 500 CE — the Miamisburg and Fort Ancient works survive nearby, and Cincinnati's own mounds stood where downtown is now until they were leveled for streets in the early 1800s. By the eighteenth century this stretch of the river was Shawnee and Miami country, with Delaware and Wyandot presence, used for hunting and for the villages along the Great and Little Miami rivers. The Ohio River was the boundary the 1768 and 1774 treaties kept redrawing, and American settlement north of it was contested by force for a full decade after the first cabins went up.
- Adena and Hopewell earthworks
- Shawnee and Miami homeland
- Ohio River as treaty line
1788–1802
Losantiville, Fort Washington, and a war
Mathias Denman, Robert Patterson and John Filson bought the section opposite the Licking River mouth from John Cleves Symmes and landed settlers there in December 1788. Filson coined the name Losantiville — a Latin-Greek-French mash meaning 'the city opposite the mouth of the L[icking]' — and was killed by Native fighters before the year was out. What made the settlement survive was the U.S. Army: Fort Washington was built in 1789 and became the staging ground for the campaigns against the Northwest Confederacy, including St. Clair's catastrophic 1791 defeat and Anthony Wayne's victory at Fallen Timbers in 1794. Governor Arthur St. Clair renamed the town Cincinnati in 1790. The Treaty of Greenville in 1795 opened Ohio to settlement, and the soldiers' payroll turned the landing into a town.
- Settled December 1788
- Fort Washington, 1789
- Renamed Cincinnati, 1790
1802–1850
Porkopolis and the Queen City of the West
Steamboats changed everything. Cincinnati was building its own by 1811, and the river put it at the center of a national trade in salt pork, whiskey, flour and furniture. Hog drovers walked their animals down the streets to packing houses that turned out barreled pork for the South and lard oil for the lamps of the East — by the 1830s the city handled more hogs than anywhere on earth and had earned the name Porkopolis, which locals used with more pride than embarrassment. The Miami and Erie Canal opened north from downtown in 1827, and the population went from about 2,500 in 1810 to 115,000 in 1850, making Cincinnati the sixth-largest city in the country. Germans and Irish arrived in enormous numbers, and the Germans settled the basin north of the canal — the canal they nicknamed the Rhine, which is why the neighborhood is Over-the-Rhine. Being a free city on a slave-state border also made Cincinnati a center of abolitionism and of violence against it: mobs destroyed Black neighborhoods in 1829 and 1841 and wrecked James Birney's abolitionist press in 1836, while Harriet Beecher Stowe, living in Walnut Hills, gathered what became Uncle Tom's Cabin.
- Miami and Erie Canal, 1827
- Sixth-largest U.S. city by 1850
- Porkopolis
1850–1880
Beer, bridges and the first professional ballclub
German Cincinnati built the city people photograph today. By the 1870s dozens of breweries were operating in and around Over-the-Rhine, cutting lagering tunnels into the hillsides and the basin floor, and the neighborhood's Italianate tenements went up faster than almost anywhere in America — the surviving district is now one of the largest intact nineteenth-century urban areas in the country. John A. Roebling's suspension bridge to Covington opened to traffic on December 1, 1866 with the longest main span in the world, and it is the direct prototype for the Brooklyn Bridge he designed next. In 1869 the Cincinnati Red Stockings became baseball's first openly all-salaried professional team and went undefeated on a national tour, which is why Opening Day is still treated here as a civic holiday. Music Hall opened in 1878, the zoo in 1875 — the second-oldest in the United States — and Spring Grove Cemetery, laid out in 1845, became a model for the American landscape-cemetery movement.
- Roebling Bridge opened Dec 1, 1866
- Red Stockings, 1869
- Music Hall, 1878
1880–1912
Inclines, riots and a political machine
The basin was full and the hilltops were not, so between 1872 and 1890 five steam-powered inclined planes hauled streetcars, wagons and people up to Mount Auburn, Price Hill, Mount Adams, Bellevue and Fairview. Hilltop resorts sat at the top of each one and the neighborhoods that formed around them are still there. The same decades brought the city's worst civil disorder: in March 1884 a manslaughter verdict in a notorious murder case set off three days of rioting that burned the Hamilton County Courthouse and left dozens dead. Out of that disorder came George B. Cox, who ran Cincinnati as a Republican machine boss from the 1880s until reformers broke his organization in the 1910s. Cincinnati also sent William Howard Taft to the White House in 1909 — the only person to serve as both president and chief justice, born in a Mount Auburn house that is now a national historic site.
- Five inclines, 1872–1890
- Courthouse riots, 1884
- Taft elected, 1908
1913–1945
A charter, a subway that never ran, and the water
Reformers replaced the machine with a new charter in 1924 that installed a city manager and proportional representation, and for decades Cincinnati was cited nationally as the best-governed large city in America. The same era produced its most famous failure: the Miami and Erie Canal bed was drained and dug out for a rapid-transit subway, funded by a 1916 bond issue, and construction stopped in 1927 with two miles of finished tunnel and stations that never carried a passenger. Central Parkway was built over the top. Art deco arrived at scale — the Carew Tower in 1930 and Union Terminal in 1933, whose 180-foot half-dome rotunda is still the largest of its kind in the Western Hemisphere. Then in January 1937 the Ohio River crested just under 80 feet, put a fifth of the city underwater, knocked out the water works and the power plant, and forced the flood walls, pumping stations and riverfront clearances that shaped the modern waterfront.
- City manager charter, 1924
- Subway abandoned, 1927
- Union Terminal, 1933
- The 1937 flood
1946–1979
Urban renewal, expressways, and the Big Red Machine
Postwar Cincinnati did what postwar American cities did, at full scale. The 1948 master plan targeted the West End, and between 1958 and the mid-1960s the Kenyon-Barr clearance demolished roughly 2,800 buildings and displaced more than 25,000 people — the overwhelming majority Black — to create the Queensgate industrial district and the right-of-way for Interstate 75. Fountain Square was rebuilt in 1971, Riverfront Stadium opened in 1970 on the old public landing, and the skywalk system tried to lift downtown off the street. What people remember from the decade is the baseball: the Big Red Machine won back-to-back World Series in 1975 and 1976 with Bench, Morgan, Rose and Perez. The decade closed badly — eleven people were crushed to death outside Riverfront Coliseum before a Who concert on December 3, 1979, which ended festival seating in American arenas.
- Kenyon-Barr clearance, 1958–1960s
- Riverfront Stadium, 1970
- World Series 1975 and 1976
1980–2001
Hollowing out, and a reckoning
Manufacturing left, the population fell from a 1950 peak of about 504,000 toward 330,000, and Over-the-Rhine — the district now marketed to tourists — became one of the poorest neighborhoods in the United States, with block after block of vacant Italianate buildings. Downtown's answer was suburban-style: a convention center, a skywalk, and stadium politics that produced a 1996 county sales tax for two new venues. The defining event of the period came in April 2001, when a Cincinnati police officer shot and killed Timothy Thomas, an unarmed nineteen-year-old, the fifteenth Black man killed by police in the city since 1995. Four days of unrest followed, along with an economic boycott by national artists and a federal review. The 2002 Collaborative Agreement that came out of it reorganized policing here and is still cited nationally as a model consent process.
- Population peak 1950, then decline
- Riverfront tax vote, 1996
- 2001 unrest and the Collaborative Agreement
2002–today
The basin comes back
Great American Ball Park opened in 2003 and Paul Brown — now Paycor — Stadium in 2000, and the land between them became The Banks, with Smale Riverfront Park finishing the connection to the Roebling Bridge. Over-the-Rhine's turnaround, driven largely by the nonprofit developer 3CDC from 2004 onward, rebuilt Washington Park, Music Hall and hundreds of buildings — and produced the displacement argument that still runs through every neighborhood meeting in the city. The streetcar opened in September 2016 on a 3.6-mile loop between the riverfront and Findlay Market, and became fare-free in 2020. FC Cincinnati went from a 2016 expansion side to MLS to a purpose-built stadium in the West End in 2021 and an MLS Supporters' Shield in 2023. The census counted 309,317 people in 2020 — the first increase since 1950.
- The Banks and Smale Park
- Streetcar opened Sept 2016
- TQL Stadium, 2021
- First population gain since 1950