Saint Clair County, Michigan
Saint Clair County: county in Alabama, United States
About
Saint Clair County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 163,040 and a population density of 96 people per km². After 10 years in 2020 county had an estimated population of 159,293 inhabitants. Its county seat is Ashville, Pell City. The county was created 207 years ago in 1818.
County Snapshot
Saint Clair County at a glance
Saint Clair County currently has 14 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
14
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Michigan counties
83
Open related pagesLargest city
Port HuronPopulation 28,631
Top linked places
Quick Facts about Saint Clair County
| Population | 159,293 (2020) |
| Country | United States of America |
| State | Michigan (United States) |
| Different from | St. Clair County, St. Clair County, St. Clair County |
| Twitter username | stclairema |
| Plate code | 59 |
| Area | 1693 km2 |
| Water as percent of area | 3.3% |
| Land as percent of area | 96.7% |
| Latitude & Longitude | 42.9311,-82.6644 |
| Named for | Arthur St. Clair |
| Altitude | 1,053 feet / 321 meters |
| Capital | Ashville, Pell City |
| Establishment | November 20, 1818 |
| Time Zone | America/Detroit |
| Local time | 13:35:50 (18th April 2026) |
| Density | 94 Pop. per km² as of 2020 |
| Population growth | -2.35% (2010-2020) |
| Weather | 66℉ Showers And Thunderstorms 7-days weather |
Geography
Saint Clair County is located at 42°55'52"N 82°39'52"W (42.9311200, -82.6643700). It has 6 neighbors: Blount County, Calhoun County, Etowah County, Jefferson County, Shelby County and Talladega County.
Saint Clair County map
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The largest city of Saint Clair County is Port Huron with a population of 28,631. Other cities include, Marysville population 9,649, Saint Clair population 7,079, Marine City population 4,058 and Algonac population 4,034. See all Saint Clair County cities & populated places.
Saint Clair County Populated Places
Cities, towns, neighborhoods & other populated places in Saint Clair County.
| City Name | Population | Title |
|---|---|---|
| Port Huron | 28,631 | City in Michigan, United States |
| Marysville | 9,649 | City in Saint Clair County, Michigan, United States of America |
| Kimball | 9,285 | Township in St. |
| Saint Clair | 7,079 | County in Michigan, United States |
| Casco | 4,062 | Township in St. |
| Marine City | 4,058 | City in Michigan, USA |
| Columbus | 4,038 | Township in St. |
| Algonac | 4,034 | City in Michigan |
| Pearl Beach | 2,829 | Census-designated place in St. |
| Brockway | 1,992 | Township in St. |
| Yale | 1,905 | Private research university in New Haven, Connecticut, United States |
| Capac | 1,846 | City in St. |
| Blaine | 561 | Township in St. |
| Emmett | 259 | Human settlement in St. |
Weather
Showers and thunderstorms. Mostly cloudy, with a high near 66.
7-Day ForecastDemographics
According to census records, the population of Saint Clair County decreased by 2.35% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 163,040 | - | census |
| 2011 | 161,581 | -0.9% | estimation process |
| 2012 | 160,625 | -0.6% | estimation process |
| 2013 | 160,288 | -0.21% | estimation process |
| 2014 | 160,065 | -0.14% | estimation process |
| 2015 | 159,700 | -0.23% | estimation process |
| 2016 | 159,369 | -0.21% | estimation process |
| 2017 | 159,005 | -0.23% | estimation process |
| 2018 | 159,031 | 0.02% | estimation process |
| 2019 | 159,128 | 0.06% | estimation process |
| 2020 | 159,293 | 0.1% | estimation process |
People born in Saint Clair County (4)
People born in Saint Clair County, including congressman John Abercrombie, Confederate Army soldier and centenarian Pleasant Crump, football player C. C. Warren, .
More notable people
- Chamintney Stovall Thomas (American educator, musician, author, religious leader) she was born in 01/01/1899
Other places with the same name (3)
- Saint Clair County, Illinois The County of St. with a population of 258,046 people.
- Saint Clair County, Alabama county in Alabama, United States with a population of 90,739 people.
- Saint Clair County, Missouri county in Missouri, United States with a population of 9,689 people.
Michigan Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Wayne County | 1,740,623 | County in Michigan, United States |
| Oakland County | 1,253,459 | County in Michigan, United States |
| Macomb County | 870,791 | County in Michigan, United States |
| Detroit | 665,369 | The twenty-fourth most populous city in the United States and the center of the Detroit metropolitan area. |
| Kent County | 658,708 | County in Michigan, United States |
| Genesee County | 404,794 | County in Michigan, United States |
| Washtenaw County | 366,473 | County in Michigan, United States |
| Ottawa County | 294,635 | County in Michigan, United States |
| Ingham County | 290,609 | County in Michigan, United States |
| Kalamazoo County | 265,988 | County in Michigan, United States |
| Grand Rapids | 200,031 | The second most populous city in Michigan. |
| Livingston County | 192,335 | County in Michigan, United States |
| Saginaw County | 189,868 | County in Michigan, United States |
| Muskegon County | 173,883 | County in Michigan, United States |
| Jackson County | 156,920 | County in Michigan, United States |
| Berrien County | 153,025 | County in Michigan, United States |