St. Clair County, Michigan

administration
Federal Building and St. Clair County Courthouse
US state :	Michigan
Administrative headquarters :	Port Huron
Address of the administrative headquarters:	County Courthouse 201 McMorran Boulevard Port Huron, MI 48060-4006
Foundation :	1820
Made up from:	Macomb County
Area code :	001 810
Demographics
Residents :	163,040 (2010)
Population density :	86.9 inhabitants / km ²
geography
Total area :	2167 km²
Water surface :	291 km²
map

Website : stclaircounty.org

St. Clair County is a county in the US state of Michigan . The county seat is Port Huron .

geography

The county is located in the east of the Lower Peninsula of Michigan, borders Canada , separated by the St. Clair River and has an area of 2167 square kilometers, of which 291 square kilometers are water. It borders on the following counties:

	Sanilac County
Lapeer County		Lambton County ( Ontario , Canada)
	Macomb County

history

St. Clair County was formed in 1822 from parts of Macomb County. It was named after Arthur St. Clair , the first governor of the Northwest Territory .

Two locations in St. Clair County have National Historic Landmark status , the Huron Lightship and the St. Clair Tunnel . 27 buildings and sites in the county are registered in the National Register of Historic Places (as of January 28, 2018).

Demographic data

growth of population
Census	Residents	± in%
1830	1114	-
1840	4606	313.5%
1850	10,420	126.2%
1860	26,604	155.3%
1870	36,661	37.8%
1880	46.197	26%
1890	52.105	12.8%
1900	55,228	6%
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%
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%
Before 1900 1900–1990 2000 + 2010 Age pyramid of St. Clair County (as of 2000)

According to the 2000 census , St. Clair County had 164,235 people in 62,072 households and 44,629 families. The population density was 88 inhabitants per square kilometer. The racial the population was composed of 94.96 percent white, 2.10 percent African American, 0.50 percent Native American, 0.40 percent Asian, 0.02 percent from the Pacific island area and 0.64 percent from other ethnic groups Groups; 1.38 percent were descended from two or more races. Hispanic or Latino of any of the above mentioned groups were 2.19 percent of the population.

Of the 62,072 households, 34.6 percent had children under the age of 18 living with them. 57.4 percent were married couples living together, 10.4 percent were single mothers, and 28.1 percent were non-families. 23.4 percent were single households and 9.6 percent had people aged 65 or over. The average household size was 2.62 and the average family size was 3.09.

26.8 percent of the population were under 18 years old. 7.9 percent between 18 and 24 years, 30.0 percent between 25 and 44 years, 23.1 percent between 45 and 64 years and 12.2 percent were 65 years or older. The median age was 36 years. Statistically, for every 100 females there were 97.1 males. For every 100 women aged 18 and over there were 94.5 men.

The median income for a household in the county is $ 46,313 , and the median income for a family is $ 54,450. Males had a median income of $ 42,572 versus $ 25,880 for females. The per capita income was $ 21,582. 5.8 percent of families and 7.8 percent of the population are below the poverty line.