St. Clair County, MI

About St. Clair County

The cited Michigan reference identifies Port Huron as the county seat. The roster and seat reference were checked in August 2026. County-level pages provide geographic organization; they do not replace the city, township, village, school district, court, or other agency responsible for an address-specific question.

The member list intentionally contains legal municipalities rather than every postal community or Census statistical place. That prevents an unincorporated community from being presented as if it had its own permit office or government.

Cities, Townships, and Villages

Open any municipality below to review its legal identity, official Census area and boundaries, permit-authority source, dated directory counts, schools coverage, and neighboring communities.

• Port Huron
• Marysville
• Algonac
• Marine City
• Yale
• Capac
• Emmett
• Fort Gratiot
• Kimball
• China Township
• Clay Township
• Cottrellville
• Ira Township
• Casco Township
• Port Huron Township
• Burtchville Township
• Clyde Township
• Columbus Township
• East China Township
• Emmett Township
• Grant Township Stclair
• Greenwood Township
• Kenockee Township
• Lynn Township
• Mussey Township
• Riley Township
• Wales Township
• Brockway Township
• Berlin Township

Homes and Property Search

The dated snapshot does not provide a verified active-MLS count across the matched St. Clair County municipalities. The value is shown as unavailable rather than as a numeric total. Use the live homes-for-sale search for current status and property-level facts.

A county total can change as listings enter, leave, or change status. Verify the legal municipality and current listing details instead of using the saved total as an availability promise.

Professionals and Local Services

The same dated snapshot records 6 municipality-matched home-service profiles and legal-service coverage without a verified municipality-matched count in St. Clair County. Available figures are lower bounds under the recorded postal-locality matching rule; unverified values are not presented as numeric totals.

Browse Find a Pro, then confirm service area, credentials, insurance, written scope, and availability with the selected business. A missing match is not proof that no provider serves the county.

Schools and Career Resources

The dated snapshot does not provide a verified school-location count inside the official Census geometries for the county’s rostered municipalities. The value is shown as unavailable rather than as a numeric total. Use the school directory for available records and confirm address-level assignment with the responsible district.

The career directory provides 150 occupation guides for Detroit-area workers and employers. County location is only one part of a job or training decision; review the current program, employer, credential, schedule, and compensation terms.

Adjacent Counties

Official 2025 Census boundaries connect St. Clair County to these other counties in the Rebuild Detroit scope:

• Lapeer County
• Macomb County

Other recorded boundary neighbors outside this six-county anchor scope are Sanilac. A shared county boundary does not make local rules or services interchangeable.

Permits and Local Authority

Do not assume St. Clair County issues every permit. Resolve the property to its legal municipality, then open that municipality’s verified authority source and confirm the exact work. The enforcing agency may be municipal, county, state, or delegated depending on the address and activity.

Keep the property address, scope, current source page, form, fee, and inspection sequence together. If an official page delegates responsibility, follow that current instruction rather than a generic county summary.

Using County Information Carefully

County, municipality, mailing city, school district, court district, and service area are different geographic relationships. Use the county hub to find the correct local page, but keep the address and responsible organization attached to any form, fee, deadline, or eligibility statement. This prevents information for one government or district from being applied to another.

For time-sensitive research, open the live directory or official source and note the date. Saved counts and source notes explain what was known during the August 2026 build; they do not freeze a market, office procedure, or program in place.

When comparing communities, use the same measure and date on both sides. A county-wide count, a municipality count, and an address-level record have different coverage. Follow the city link before drawing a conclusion about a particular property, school, permit office, provider, or listing.