Rochester Hills, located in Oakland County, Michigan, boasts a population of 76,300 as of the 2020 census, making it the 14th largest city in the state. It has consistently ranked as the safest city in Michigan for seven consecutive years.
In 1948, Avon Township adopted a charter under the Home Rule Act and established a post office named Brooklands.
In 1966, village residents voted to incorporate as the City of Rochester.
Village residents voted to transition into the City of Rochester in 1966, becoming effective in February 1967. This exempted Rochester residents from paying township property taxes.
Avon Township submitted a petition to become a city in 1967.
In 1967, the City of Rochester was incorporated, separating it from Avon Township.
Avon Township residents voted to pursue city status in January 1968.
Avon Township residents voted down the first proposed city charter in March 1969.
Residents of Avon Township rejected the second proposed city charter in May 1970.
The third proposed city charter for Avon Township was rejected by residents in September 1971.
Petitions to combine Avon Township and Rochester were filed in 1972.
The petition to consolidate Avon Township and Rochester failed to pass in April 1974.
The Michigan Boundary Commission approved Rochester's petition to annex 2.2 square miles of Avon Township in May 1974.
Avon Township officially became Avon Charter Township in August 1978.
The legal disputes over the 1974 annexation concluded in November 1981, with Avon Township mandated to relinquish the annexed property.
Voters in Avon Township approved a city charter in May 1984 and chose "Rochester Hills" as the new city's name.
Avon Township officially transitioned into the City of Rochester Hills on November 20, 1984, with Earl E. Borden as its first mayor.
In 1984, the remaining area of Avon Township was incorporated and renamed the City of Rochester Hills.
The Asian population in Rochester Hills began to increase significantly between 2000 and 2010.
By 2010, the Asian population in Rochester Hills had risen to almost 10% of the total population, marking a 61% increase from 2000.
The 2010 census reported 70,995 residents in Rochester Hills, with a population density of 2,163.2 people per square mile. The racial composition was 89.1% White, 2.5% African American, 0.2% Native American, 4.5% Asian, 0.7% from other races, and 1.9% from two or more races. Hispanics or Latinos of any race represented 1.1%.
According to the 2020 census, Rochester Hills had a population density of 2,359.9 inhabitants per square mile. The racial composition was 79.6% White, 12.8% Asian, 3.7% African American, 2.9% from two or more races, and 0.1% Native American. Hispanic or Latino residents made up 5.6% of the population, while 19.8% were foreign-born.
In the 2020 presidential election, Joseph Biden received 23,173 votes (50.67%) in Rochester Hills, while Donald Trump garnered 21,680 votes (47.4%).
The 2020 census recorded Rochester Hills' population at 76,300, making it Michigan's 14th largest city.
The Asian population in Rochester Hills continued to grow, reaching 12.8% by 2020.
Beginning in 2023, Rochester Hills will transition to Michigan's 10th congressional district, which is centered around Macomb County.