Michigan

St. Clair

160,383
2020 population
1830
first census record
20
census records

About St. Clair

St. Clair, Michigan, first appears in the United States federal census in 1830, when it recorded a population of 1,114. At the most recent census, in 2020, its population stood at 160,383.

Its recorded population peaked at 164,235 in 2000, and has since declined by roughly 2 percent.

On the ground today, one documented military engagement has been recorded within the county, among them Pontiac's Peace Council 1766, and 26 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020160,383
2010163,040
2000164,235
1990145,607
1980138,802
1970120,175
1960107,201
195091,599
194076,222
193067,563
192058,009
191052,341
190055,228
189052,105
188046,197
187036,661
186026,604
185010,420
18404,606
18301,114
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in St. Clair

Military engagements that took place in St. Clair, Michigan.

Pontiac's Peace Council 1766
1766

Historic places in St. Clair

National Register of Historic Places listings in St. Clair, Michigan.

Seventh Street-Black River Bridge
Port Huron
Military Road Historic District
Port Huron
St. Clair Flats South Channel Range Lights
Algonac
St. Clair Inn
St. Clair
Howard Block
Port Huron
Marine City Water Works
Marine City
Federal Building
Port Huron
Harrington Hotel
Port Huron
HURON (lightship)
Port Huron
McColl, James, House
Yale
Colony Tower Complex
Pearl Beach
Colony Tower Complex (Boundary Increase)
Pearl Beach
Smith, LeRoy, House
Algonac
St. Clair River Tunnel
Port Huron
Fort Gratiot Lighthouse
Port Huron
Masters Road-Belle River Bridge
Riley Township
Davidson, Wilbur F., House
Port Huron
Grand Trunk Western Railroad Depot
Port Huron
Marine City City Hall
Marine City
Jeddo Road-South Branch Mill Creek Drain Bridge
Brookway Township
Indian Trail Road-Belle River Bridge
China Township
Wadhams Road-Pine River Bridge
Saint Clair Township
Vernier Street-Swan Creek Bridge
Ira Township
Ward-Holland House
Marine City
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Explore census history and historic records for more Michigan counties.

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Everything a full report reveals about St. Clair County, Michigan

This page charts the census history of St. Clair County, Michigan. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about St. Clair

When does St. Clair first appear in the US census?
St. Clair, Michigan first appears in the federal census in 1830, with a recorded population of 1,114.
What is the population of St. Clair?
At the most recent federal census (2020), St. Clair had a recorded population of 160,383.
When did St. Clair's population peak?
St. Clair's recorded population peaked at 164,235 in 2000.
Were any battles fought in St. Clair?
1 documented military engagement took place in St. Clair, including Pontiac's Peace Council 1766.
How many historic places are in St. Clair?
26 sites are listed on the National Register of Historic Places in St. Clair, Michigan.
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