In the 1920 United States census, Michigan was recorded as having a population of 3,668,412, ranking as the seventh most populous state in the country. By 1930, Michigan's population had increased by 32.0% to 4,842,325.
Cities
The following is a list of cities in Michigan with a population of at least 15,000 based on 1920 U.S. Census data. Historic census data from 1910 and 1930 is included to reflect trends in population increases or decreases.
The 1920s saw an explosion of growth in the population of small cities near Detroit, with some communities growing more than three fold. Dearborn was the most extreme case, growing 20-fold from 2,470 to 50,358 persons.
The following is a list of counties in Michigan with populations of at least 40,000 based on 1920 U.S. Census data. Historic census data from 1910 and 1930 are included to reflect trends in population increases or decreases.
1925 Michigan Wolverines football team – Under head coach Fielding H. Yost, the Wolverines compiled a 7–1 record, outscored opponents by a combined score of 227 to 3, won the Big Ten Conference championship, and was ranked second in country in the Dickinson System rankings. Quarterback Benny Friedman and left end Bennie Oosterbaan, sometimes referred to as "The Benny-to-Bennie Show," were both consensus All-Americans and became known as one of the greatest passing combinations in college football history.
February 18 - Marion LeRoy Burton, President of the University of Michigan from 1920 to 1925, in Ann Arbor at age 50
March 30 - William J. McConnell, Michigan native who became U.S. Senator from Idaho (1890-1891) and Governor of Idaho (1893-1897), at age 85 in Moscow, Idaho
September 11 - Patrick H. Kelly, Lieutenant Governor (1907-1911) and U.S. Congressman (1913-1925), at age 57 in Washington, D.C.