Saginaw is a city in the U.S. state of Michigan and the seat of Saginaw County. The city of Saginaw and Saginaw County are both located in the area known as Mid-Michigan or Central Michigan. The city of Saginaw is located adjacent to Saginaw Charter Township and is considered part of the Tri-City area, along with neighboring Bay City and Midland. The Saginaw County MSA had a population of 196,542 in 2013. The city is also the largest municipality within the Saginaw, Midland, and Bay City Metropolitan Area.The city of Saginaw was a thriving lumber town in the 19th century and an important industrial city and manufacturing center throughout much of the 20th century. However, by the late 20th century, Saginaw's industry and its once-strong manufacturing presence declined, leading to increasing unemployment, crime, and a decrease in population.