St. Clair County | |
---|---|
Coordinates: 42°56′N82°40′W / 42.93°N 82.67°W | |
Country | United States |
State | Michigan |
Founded | March 28, 1820 (created) 1821 (organized) [1] [2] |
Named for | St. Clare of Assisi |
Seat | Port Huron |
Largest city | Port Huron |
Area | |
• Total | 837 sq mi (2,170 km2) |
• Land | 721 sq mi (1,870 km2) |
• Water | 115 sq mi (300 km2) 14% |
Population (2020) | |
• Total | 160,383 |
• Density | 190/sq mi (70/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Area code | 810 |
Congressional district | 9th |
Website | www |
St. Clair County is a county located in the U.S. state of Michigan and bordering the west bank of the St. Clair River. As of the 2020 census, the population was 160,383. [3] It is the 13th-most populous county in the state. The county seat is Port Huron, located at the north end of the St. Clair River at Lake Huron. [1] [4] The county was created September 10, 1820, and its government was organized in 1821. [1] It is located northeast of Detroit. It is considered by the State of Michigan to be a part of The Thumb, a peninsula that is surrounded by Lake Huron in the east-central area of the state. [5] This area is sometimes dubbed the Blue Water Area. [6]
French explorer René-Robert Cavelier, Sieur de La Salle led an expedition to this area on August 12, 1679. They named the lake as Lac Sainte-Claire, because it was the feast day of Saint Clare of Assisi, whom they venerated. [1] [7] English mapmakers adopted the French name, identifying the lake feature as Saint Clare on maps dated as early as 1710. By the Mitchell Map of 1755, the spelling was given as St. Clair, which later became the current version in 1924. [8] Located along the western shores of Lake St. Clair and the St. Clair River, the county was named for them by European-American settlers.
The name is sometimes mistakenly attributed to honoring Arthur St. Clair, an American Revolutionary War general and governor of the Northwest Territory, but it was established long before he was considered a notable figure. [9] The earlier spelling of the lake's name may have been conflated with English practice and the name of the general, as several political jurisdictions near the lake and the river, such as St. Clair County, St. Clair Township, and the cities of St. Clair and St. Clair Shores, share this spelling (see List of Michigan county name etymologies).
The name has sometimes been mistakenly attributed to honoring Patrick Sinclair, a British officer who purchased land on the St. Clair River at the mouth of the Pine River. In 1764, he built Fort Sinclair there, which was in use for nearly 20 years before being abandoned. [10] As noted, the name was established before he was active in the area.
According to the U.S. Census Bureau, the county has a total area of 837 square miles (2,170 km2), of which 721 square miles (1,870 km2) is land and 115 square miles (300 km2) (14%) is water. [11] St. Clair County is one of five counties that form the peninsula, known as the Thumb, that projects into Lake Huron. St. Clair County is closely connected in terms of economy with its neighbors, Metro Detroit and Sanilac County in Michigan, and Lambton County across the river in Ontario, Canada. Saint Clair County is the principal county in The Blue Water Area, a sub-region of the Thumb.
Census | Pop. | Note | %± |
---|---|---|---|
1830 | 1,114 | — | |
1840 | 4,606 | 313.5% | |
1850 | 10,420 | 126.2% | |
1860 | 26,604 | 155.3% | |
1870 | 36,661 | 37.8% | |
1880 | 46,197 | 26.0% | |
1890 | 52,105 | 12.8% | |
1900 | 55,228 | 6.0% | |
1910 | 52,341 | −5.2% | |
1920 | 58,009 | 10.8% | |
1930 | 67,563 | 16.5% | |
1940 | 76,222 | 12.8% | |
1950 | 91,599 | 20.2% | |
1960 | 107,201 | 17.0% | |
1970 | 120,175 | 12.1% | |
1980 | 138,802 | 15.5% | |
1990 | 145,607 | 4.9% | |
2000 | 164,235 | 12.8% | |
2010 | 163,040 | −0.7% | |
2020 | 160,383 | −1.6% | |
2023 (est.) | 159,874 | [12] | −0.3% |
U.S. Decennial Census [13] 1790–1960 [14] 1900–1990 [15] 1990–2000 [16] 2010–2019 [3] |
The 2010 United States census [17] indicates St. Clair County had a 2010 population of 163,040. This is a decrease of -1,195 people from the 2000 United States census. Overall, the county had a -0.7% growth rate during this ten-year period. In 2010 there were 63,841 households and 44,238 families in the county. The population density was 226.1 per square mile (87.3 per square kilometer). There were 71,822 housing units at an average density of 99.6 per square mile (38.5 per square kilometer). 93.9% were White, 2.4% Black or African American, 0.5% Asian, 0.4% Native American, 0.7% of some other race and 2.0% of two or more races. 2.9% were Hispanic or Latino (of any race). 25.9% identified as of German, 10.2% Polish, 9.3% Irish, 8.5% English, 6.5% French, 6.5% American, and 5.1% Italian ancestry. [17]
There were 63,841 households, out of which 31.3% had children under the age of 18 living with them, 52.9% were opposite-sex families, 11.4% had a female householder with no husband present, 30.7% were non-families, and 25.5% were made up of individuals. The average household size was 2.52 and the average family size was 3.01.
In the county, the population was spread out, with 23.7% under the age of 18, 8.0% from 18 to 24, 23.8% from 25 to 44, 30.1% from 45 to 64, and 14.5% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 98.1 males. For every 100 females age 18 and over, there were 95.7 males.
The 2010 American Community Survey 1-year estimate [17] indicates the median income for a household in the county was $44,369 and the median income for a family was $53,207. Males had a median income of $30,056 versus $16,771 for females. The per capita income for the county was $22,390. About 10.4% of families and 15.4% of the population were below the poverty line, including 22.7% of those under the age of 18 and 6.8% of those age 65 or over.
The county government operates the jail, maintains rural roads, operates the major local courts, keeps files of deeds and mortgages, maintains vital records, administers public health regulations, and participates with the state in the provision of welfare and other social services. The county board of commissioners controls the budget but has only limited authority to make laws or ordinances. In Michigan, most local government functions — police and fire, building and zoning, tax assessment, street maintenance, etc. — are the responsibility of individual cities and townships.
(information as of February 2023 [update] )
Year | Republican | Democratic | Third party(ies) | |||
---|---|---|---|---|---|---|
No. | % | No. | % | No. | % | |
2024 | 64,277 | 66.50% | 30,844 | 31.91% | 1,542 | 1.60% |
2020 | 59,185 | 64.19% | 31,363 | 34.02% | 1,654 | 1.79% |
2016 | 49,051 | 62.88% | 24,553 | 31.48% | 4,399 | 5.64% |
2012 | 39,271 | 52.94% | 33,983 | 45.81% | 927 | 1.25% |
2008 | 38,536 | 47.63% | 40,677 | 50.28% | 1,687 | 2.09% |
2004 | 42,740 | 53.60% | 36,174 | 45.36% | 829 | 1.04% |
2000 | 33,571 | 49.00% | 33,002 | 48.17% | 1,943 | 2.84% |
1996 | 22,495 | 37.42% | 28,881 | 48.04% | 8,742 | 14.54% |
1992 | 24,508 | 36.67% | 23,385 | 34.99% | 18,939 | 28.34% |
1988 | 32,336 | 60.26% | 20,909 | 38.97% | 413 | 0.77% |
1984 | 36,114 | 67.63% | 16,998 | 31.83% | 287 | 0.54% |
1980 | 31,021 | 55.61% | 20,410 | 36.59% | 4,348 | 7.80% |
1976 | 26,311 | 52.74% | 22,734 | 45.57% | 844 | 1.69% |
1972 | 28,471 | 63.05% | 15,712 | 34.79% | 976 | 2.16% |
1968 | 21,084 | 49.41% | 16,251 | 38.09% | 5,334 | 12.50% |
1964 | 17,011 | 40.76% | 24,662 | 59.09% | 62 | 0.15% |
1960 | 27,366 | 59.79% | 18,332 | 40.05% | 76 | 0.17% |
1956 | 29,116 | 69.46% | 12,753 | 30.42% | 51 | 0.12% |
1952 | 27,894 | 69.29% | 12,268 | 30.47% | 94 | 0.23% |
1948 | 17,883 | 61.79% | 10,647 | 36.79% | 412 | 1.42% |
1944 | 19,175 | 61.61% | 11,813 | 37.96% | 135 | 0.43% |
1940 | 18,635 | 60.16% | 12,259 | 39.58% | 82 | 0.26% |
1936 | 12,760 | 45.93% | 12,663 | 45.58% | 2,359 | 8.49% |
1932 | 14,883 | 53.08% | 12,776 | 45.56% | 382 | 1.36% |
1928 | 18,177 | 71.57% | 7,151 | 28.15% | 71 | 0.28% |
1924 | 17,435 | 76.54% | 3,600 | 15.80% | 1,745 | 7.66% |
1920 | 14,938 | 75.14% | 4,566 | 22.97% | 375 | 1.89% |
1916 | 6,538 | 57.39% | 4,617 | 40.53% | 237 | 2.08% |
1912 | 2,958 | 27.48% | 3,008 | 27.95% | 4,798 | 44.57% |
1908 | 7,287 | 62.23% | 3,756 | 32.08% | 666 | 5.69% |
1904 | 8,305 | 69.01% | 3,248 | 26.99% | 482 | 4.00% |
1900 | 7,432 | 61.41% | 4,403 | 36.38% | 268 | 2.21% |
1896 | 7,160 | 56.86% | 5,130 | 40.74% | 303 | 2.41% |
1892 | 5,371 | 48.82% | 5,248 | 47.70% | 382 | 3.47% |
1888 | 5,419 | 49.04% | 5,286 | 47.83% | 346 | 3.13% |
1884 | 4,017 | 44.21% | 4,668 | 51.38% | 401 | 4.41% |
St. Clair County is home to five county parks: Columbus County Park, Fort Gratiot County Park, Fort Gratiot Light station, Goodells County Park, and Woodsong County Park. St. Clair County also operates the Wadhams to Avoca Trail and works with local units of government to develop the Bridge to Bay Trail. [30]
Clinton County is a county in the U.S. state of Michigan. As of the 2020 Census, the population was 79,128. The county seat is St. Johns. The county was created in 1831 and organized in 1839. It is named after early American politician DeWitt Clinton. Clinton County is included in the Lansing-East Lansing, MI Metropolitan Statistical Area.
Wayne County is the most populous county in the U.S. state of Michigan. As of 2020, the United States census placed its population at 1,793,561, making it the 19th-most populous county in the United States. The county seat is Detroit. The county was founded in 1796 and organized in 1815. Wayne County is included in the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. It is one of several U.S. counties named after Revolutionary War-era general Anthony Wayne.
Shiawassee County is a county located in the U.S. state of Michigan. As of the 2020 United States Census, the population was 68,094. The county seat is Corunna, and the largest city in the county is Owosso. In 2010, the center of population of Michigan was located in Shiawassee County, in Bennington Township.
Sanilac County is a county located in the Thumb region of the U.S. state of Michigan. As of the 2020 Census, the population was 40,611. The county seat is Sandusky. The county was created on September 10, 1822, and was fully organized on December 31, 1849. Sanilac County is considered to be part of the Thumb of Michigan, a subregion of the Flint/Tri-Cities. Sanilac County enjoys seasonal tourism in towns such as Lexington, Port Sanilac, and Carsonville. Sanilac County is economically attached to St. Clair County and Huron County and is largely composed of nearly flat areas of rich soil.
Saginaw County, officially the County of Saginaw, is a county located in the U.S. state of Michigan. As of the 2020 Census, the population was 190,124. The county seat is Saginaw. The county was created by September 10, 1822, and was fully organized on February 9, 1835. The etymology of the county's name is uncertain. It may be derived from Sace-nong or Sak-e-nong, as the Sauk tribe is believed by some to have once lived there. A more likely possibility is that it comes from Ojibwe words meaning "place of the outlet" –sag and ong. See List of Michigan county name etymologies.
Macomb County is a county on the eastern shore of the U.S. state of Michigan. It is part of the Detroit metropolitan area, bordering Detroit to the north and containing many of its northern suburbs. Its seat of government is Mt. Clemens, and its largest community is Warren. As of the 2020 census, the county had a population of 881,217, making it the third-most populous county in the state, behind neighboring Wayne and Oakland.
Keweenaw County is a county in the western Upper Peninsula of the U.S. state of Michigan. As of the 2020 census, the county's population was 2,046, making it Michigan's least populous county. It is also the state's largest county by total area, including the waters of Lake Superior, as well as the state's northernmost county. The county seat is Eagle River.
Huron County is a county in the U.S. state of Michigan. As of the 2020 Census, the population was 31,407. The county seat is Bad Axe. Huron County is at the northern tip of the Thumb, which is a sub region of Mid Michigan. It is a peninsula, bordered by Saginaw Bay to the west and Lake Huron to the north and east, and has over 90 miles (140 km) of shoreline, from White Rock on Lake Huron to Sebewaing on the Saginaw Bay. Huron County's most prominent industry is agriculture, as with most of the other Thumb counties. Huron County enjoys seasonal tourism from large cities such as Detroit, Flint, and Saginaw. Much of the tourism is in the Port Austin and Caseville area.
Gratiot County is a county in the U.S. state of Michigan. As of the 2020 Census, the population was 41,761. The county seat is Ithaca, although its most populous city is Alma.
Clinton Township is a charter township in Macomb County in the U.S. state of Michigan. A northern suburb of Detroit, Clinton Township is located about 22 miles (35 km) northeast of downtown Detroit. As of the 2020 census, the township had a population of 100,513, making it the most populous township in Michigan, and the state's 8th-most populous community overall.
Columbus Township is a civil township of St. Clair County in the U.S. state of Michigan. The population was 4,112 at the 2020 Census.
Fort Gratiot Township is a charter township of St. Clair County in the U.S. state of Michigan. The population was 11,242 at the 2020 Census. It is named for Fort Gratiot, an American fort located there off and on between 1814 and 1879.
Marysville is a city in St. Clair County of the U.S. state of Michigan. The population was 9,959 at the 2010 census. The municipality was founded in 1919, first as a village, then became a city in 1924.
Port Huron is a city in the U.S. state of Michigan and the county seat of St. Clair County. The population was 28,983 at the 2020 census. The city is bordered on the west by Port Huron Township, but the two are administered autonomously.
Memphis is a city that straddles the border between Macomb and St. Clair counties in the U.S. state of Michigan. The population was 1,084 at the 2020 census.
The Thumb is a region and a peninsula of the U.S. state of Michigan, so named because the Lower Peninsula is shaped like a mitten. The Thumb area is generally considered to be in the Central Michigan region, east of the Flint area and the Tri-Cities and north of Metro Detroit. The region is also branded as the Blue Water Area.
Charles Chouteau Gratiot was born in St. Louis, Spanish Upper Louisiana Territory, now the present-day State of Missouri. He was the son of Charles Gratiot, Sr., a fur trader in the Illinois country during the American Revolution, and Victoire Chouteau, who was from an important mercantile family. His father became a wealthy merchant, during the early years of St. Louis. After 1796, Charles was raised in the large stone house purchased by his father in St. Louis, near the Mississippi River. He made a career out of being a U.S. Army military engineer, becoming the Chief Engineer of the United States Corps of Engineers, and supervised construction of a number of important projects. He was dismissed by William Henry Harrison, which led to a protracted controversy.
Fort Gratiot was an American stockade fort in Fort Gratiot, Michigan, in Saint Clair County, Michigan. The former location of the fort was listed on the National Register of Historic Places in 1980.
Fort Gratiot Light, the first lighthouse in the state of Michigan, was constructed north of Fort Gratiot in 1825 by Lucius Lyon, who later became one of Michigan's first U.S. Senators.
US Highway 25 (US 25) was a part of the United States Numbered Highway System in the state of Michigan that ran from the Ohio state line near Toledo and ended at the tip of The Thumb in Port Austin. The general routing of this state trunkline highway took it northeasterly from the state line through Monroe and Detroit to Port Huron. Along this southern half, it followed undivided highways and ran concurrently along two freeways, Interstate 75 (I-75) and I-94. Near the foot of the Blue Water Bridge in Port Huron, US 25 turned north and northwesterly along the Lake Huron shoreline to Port Austin.