Monroe County, Michigan

Monroe County is a county in the U.S. state of Michigan. As of the 2020 Census, the population was 154,809. The largest city and county seat is Monroe. The county was established as the second county (after Wayne County) in the Michigan Territory in 1817 and was named for then-President James Monroe. Monroe County is coterminous with the Monroe metropolitan statistical area.

Before the county's formation, the primary settlement was Frenchtown, which was settled in as early as 1784 along the banks of the River Raisin. The small plot of land was given to the early French settlers by the Potawatomi Native Americans, and the area was claimed for New France. The settlement of Frenchtown, Michigan and the slight northerly settlement of Sandy Creek drew in a total of about 100 inhabitants. During the War of 1812, the area was the site of the Battle of Frenchtown, which was the worst American defeat in the war and remains the deadliest conflict ever on Michigan soil. The site of the battle is now part of the River Raisin National Battlefield Park.

Monroe County was formed from the southern portion of Wayne County in 1817. At the time, the Michigan Territory, which had not yet received statehood, consisted of only Wayne County since Detroit was the only area which had a non-indigenous population over 1,000 people. When the area became more populated, the southern portion of Wayne County was broken off to form Monroe County; the settlement of Frenchtown was platted with the name "Monroe".

The settlement also incorporated as a village in 1817 and became the county seat of Monroe County. The county and its county seat were named in honor of then-President James Monroe in anticipation of his upcoming visit to the city. Shortly after its formation, Monroe County's population was recorded at only 336 in the 1820 census. When the county was originally formed, it stretched for 60 miles (97 km) inland (twice its current size), but the western half was split off to form Lenawee County in 1826.

Monroe County's most famous resident, George Armstrong Custer (1839–1876), moved to Monroe as a child and lived with his half-sister and brother-in-law. Although not born in Monroe, he attended school in Monroe and later moved away to attend the United States Military Academy. He returned to Monroe in 1864 during the Civil War to marry Elizabeth Bacon (1842–1933), whom he met while previously living in Monroe. Much of Custer's family resided in Monroe, included Elizabeth Bacon, Henry Armstrong Reed (1858–1876), and Boston Custer (1848–1876). After their deaths in the Battle of the Little Bighorn, Henry and Boston were interred and memorialized in Monroe's historic Woodland Cemetery, as are many members of Bacon's family. Although George Custer died in the same battle, he was interred at West Point Cemetery and Elizabeth Bacon was buried next to him when she died many decades later. In 1910, then-President William Howard Taft and the widowed Elizabeth Bacon unveiled an equestrian statue of Custer which now sits at the corner of Elm Street and Monroe Street in the heart of downtown Monroe.

When the city of Toledo was incorporated in 1833, it was part of Monroe County instead of the state of Ohio.^{[citation needed]} The small strip of land surrounding the mouth of the Maumee River was under the jurisdiction of the Michigan Territory, because the borders originally drawn up for the Northwest Ordinance of 1787 set a territorial boundary as the southernmost edge of Lake Michigan. When Ohio became the first in the Northwest Territory to gain statehood in 1803, the state's northern border claimed this important area, even though the boundaries of the Michigan Territory when it was formally organized in 1805 also included this area. From 1833 to 1836, Toledo belonged to Monroe County, which led to the very heated Toledo War border dispute between the Michigan Territory and the state of Ohio for the area known as the Toledo Strip. In late 1836, President Andrew Jackson, who earlier had appointed his brilliant young aide Stevens T. Mason as the Michigan Territory's "boy governor", intervened to settle the dispute. The federal government gave the Toledo Strip to Ohio in exchange for Michigan getting the Upper Peninsula, then considered a wasteland, when it became a state on January 26, 1837. While Toledo was part of Monroe County, it surpassed Monroe in terms of size and population. In 1915, Michigan Governor Woodbridge N. Ferris and Ohio Governor Frank B. Willis called a ceremonial truce to the border conflict when new state line markers were erected.

The new state line at the end of the Toledo War was established at approximately the 41°44' north latitude line just north of the mouth of the Maumee River. This gave the river and the city of Toledo to the state of Ohio, but it also created an unintended consequence for a specific area of Michigan. The state line also cut through the smaller Ottawa River and inadvertently cut off a small section of Monroe County, creating an exclave known as the "Lost Peninsula" (41°44′08.3″N 83°27′35.6″W / 41.735639°N 83.459889°W / 41.735639; -83.459889). The few Michigan residents that live on the small peninsula must travel south into Lucas County, Ohio on a 10-minute drive before going north to get back to the rest of Michigan. The Lost Peninsula is administered by Erie Township and most of the peninsula contains a marina.

Monroe County's boundary remained unchanged from 1837 to 1973, when a final unresolved dispute from the Toledo War was resolved, 136 years after the conflict. Ownership over the very small, uninhabited Turtle Island in a remote portion of Lake Erie was disputed for decades after the island's lighthouse was shut down. The island was long controlled by Michigan but still disputed by Ohio. On February 22, 1973, an agreement was met, and state lines were redrawn for the last time to cut exactly through the tiny island, which divided the island between Monroe County and Lucas County. Erie Township has jurisdiction over the Michigan half of Turtle Island, and the city of Toledo controls the other half. What to do with the island remains a contentious issue since neither side can come to any agreement. Today, the island has several abandoned structures, and the recent building of new structures was halted by a court order.