About St. Clair County
St. Clair County is a city located in United States, in the Michigan region. According to the latest available data (2026), the population of St. Clair County is approximately 160,383 residents, making it the #504 most populous city in United States.
Globally, St. Clair County ranks #10,601 among the world's most populated cities.
St. Clair County City Statistics
| City | St. Clair County |
| Country |  United States |
| Population | 160,383 |
| Global Rank | #10,601 |
| Rank in United States | #504 of 867 cities |
| City Category | city |
| Region | Michigan |
| Latitude | 42.93 |
| Longitude | -82.67 |
| Data Year | 2026 |
Where is St. Clair County Located?
St. Clair County is located in United States, in the Michigan region, at coordinates 42.93° latitude and -82.67° longitude. Located in the mid-latitudes, St. Clair County experiences distinct four-season weather patterns.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of St. Clair County?
The population of St. Clair County is approximately 160,383 residents according to the latest available data (2026).
Where is St. Clair County located?
St. Clair County is located in United States at approximately 42.93° latitude and -82.67° longitude.
Is St. Clair County one of the largest cities in United States?
With a population of 160,383, St. Clair County is one of the notable urban areas in United States. It ranks #504 out of 867 cities in the country.
