In our seven county region, Wayne County continues to be the most populated county, yet since 2010 it has also lost the most residents, according to new population data released by the U.S. Census Bureau. In 2018 Wayne County had a population of about 1.75 million people, the Census estimated. However, as the second map shows, this was a loss of about 67,000 people since 2010. This change in population resulted in a 3.6 percent decline in Wayne County’s population. St. Clair and Monroe counties also experienced population losses since 2010. According to the data, St. Clair County experienced a 2.3 percent population loss since 2010 and Monroe County experienced a 1 percent population loss. In 2018 St. Clair County had a population of about 159,000 and Monroe County had a population of about 150,000.
While more rural counties like St. Clair and Monroe counties experienced a population loss, Livingston and Washtenaw counties experienced the most growth regionally. In 2018 Washtenaw County had a population of about 371,000, which was an 8 percent growth since 2010. This 8 percent growth meant an additional 26,000 people moved to the county since 2010. In Livingston County the population grew by about 6 percent since 2010. In 2018 the Livingston County population was about 191,000, this is reflective of about a 10,000 person growth since 2010.
Macomb and Oakland counties also experienced population growth since 2010, by 4.7 and 4 percent, respectively. Oakland County is the only other county in the region with a population above 1 million (its population is about 1.3 million). Macomb County has a population of about 875,000.
At the state level, Michigan’s population has continued to grow for seven years now, with its most recent population count being just under 10 million people. One reason it is estimated the state is experiencing growth is because more people are moving to Michigan, and fewer people are leaving.