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St. Clair County

County Website

Welcome to St. Clair County

St. Clair County is located in the north central portion of the state and is home to more than 86,000 residents. The county boasts history, heritage, small town allure and big city amenities all rolled into one. Recreational activities abound, housing is affordable, and education is top-notch.

Core Services

Business Licenses

Business licenses are often administered by the county's Office of the Probate Judge or the Department of Revenue. Access the county business license application or contact information for obtaining a license here.

Tax Information

Businesses pay various taxes through county tax boards, tax assessors, and revenue departments. All entities that conduct business in the county should contact this office to determine their potential tax liabilities.

Economic Development

Access county and area business development resources including, incentives, incubator opportunities, and local demographics compiled by county agencies, the area chamber of commerce, or the area economic development authority.

Contact Us

Find the main numbers for the St. Clair County Courthouses and departmental emails.

Access St. Clair County Resources

Local resource contact information for St. Clair County's website, Small Business Development Center(s), Taxpayer Service Center(s), Business License office(s), and Chamber(s) of Commerce in your area here.

County Resources