
Long before European settlement, the Rochester region was the homeland of the Seneca nation, the westernmost tribe of the Iroquois Confederacy. The Seneca had major settlements including Totiakton (now downtown Rochester) along the Genesee River. They cultivated extensive cornfields, orchards, and maintained sophisticated trade networks. The area was known as the "Genesee Country" and was considered the breadbasket of the Iroquois Confederacy until European colonization brought warfare and displacement.
During the American Revolutionary War, General George Washington ordered the Sullivan-Clinton Campaign to destroy the Iroquois nations allied with Britain. The campaign systematically burned Seneca villages and crops across the Genesee Valley, including the town of Little Beard's Town (Genesee). Seneca food supplies were destroyed, causing mass starvation. The campaign was a deliberate war of extermination against the Seneca, and Rochester's future site was cleared of its original inhabitants to make way for American settlement.
During the War of 1812, the Rochester area was on the frontier of conflict between American and British forces. The Battle of Lake Ontario involved naval engagements near the Genesee River. Rochester served as a supply depot for American troops operating along the Niagara frontier. The war disrupted early settlement, but the conflict's end in 1815 accelerated American expansion into Seneca lands. The war solidified US control over the region and opened it to rapid settlement and development.
Rochester was a key center of abolitionist activity during the Civil War. Frederick Douglass, the most prominent Black abolitionist, published his newspaper The North Star from Rochester and recruited Black soldiers for the 54th and 55th Massachusetts Infantry Regiments. Rochester sent thousands of soldiers to the Union Army. The city's manufacturing capacity, including the Rochester Union Mills, produced uniforms, weapons, and supplies for the war effort.
On July 24, 1964, Rochester erupted in one of the first major race riots of the 1960s. The uprising was sparked by police brutality against a Black man, but its roots lay in systematic racial discrimination, police harassment, and economic exclusion. The riot lasted three days, with thousands of National Guard troops deployed to patrol the city's predominantly Black 7th Ward. Hundreds were arrested, and the uprising exposed the deep racial violence embedded in Rochester's social fabric.