List of towns and cities in St. Clair County, Illinois

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Cities and Towns in the United States > State Illinois > St. Clair County
Birth certificate - U.S. Vital Records
Located in the southwestern part of Illinois, St. Clair County is known for its rich history, scenic beauty, and diverse cultural offerings. Home to vibrant cities such as Belleville and East St. Louis, the county boasts a variety of attractions including the Cahokia Mounds State Historic Site, which preserves the remains of a pre-Columbian Native American city. Nature enthusiasts can explore the lush landscapes at Horseshoe Lake State Park and the historic Eckert's Belleville Farm. Furthermore, St. Clair County hosts a range of festivals and events throughout the year, celebrating its unique heritage and community spirit.

St. Clair County (IL) Statistics

Number of cities/towns/villages 35
Population 260,000
Area 674 sq mi
Density 386 /sq mi
Altitude 538 ft
Median Household Income $54,000
Poverty rate 14%
Unemployment rate 5%
Educational Attainment (Bachelor's Degree or higher) 28%
Crime rate 3,600 per 100,000

St. Clair County administration contact details

St. Clair county administration contact details
Address10 Public Square, Belleville, IL 62220
County seatBelleville
Phone number(618) 277-6600
Official websiteSt. Clair County Official Website
County ClerkTom Holbrook
County AuditorPatricia Noll
County Fiscal OfficerDebbie Reiser
County Permits Office or Building Department contact detailsPermits Office: (618) 825-2500
County CommissionerTerry Beach
Search a city in the County of St. Clair

Get the contact information for all cities and towns in this county. Find general information, official websites, email, phone numbers, addresses, and much more.

Find below the complete list of cities and towns in St. Clair County:

  • BELLEVILLE

    Belleville is a City in St. Clair county with -50 000 inhabitants.

  • EAST ST. LOUIS

    East St. Louis is a City in St. Clair county with -40 000 inhabitants.

  • O'FALLON

    O'Fallon is a City in St. Clair county with -30 000 inhabitants.

  • CAHOKIA

    Cahokia is a Village in St. Clair county with -20 000 inhabitants.

  • FAIRVIEW HEIGHTS

    Fairview Heights is a City in St. Clair county with -20 000 inhabitants.

  • SWANSEA

    Swansea is a Village in St. Clair county with -15 000 inhabitants.

  • SHILOH

    Shiloh is a Village in St. Clair county with -10 000 inhabitants.

  • CENTREVILLE

    Centreville is a City in St. Clair county with -10 000 inhabitants.

  • MASCOUTAH

    Mascoutah is a City in St. Clair county with -10 000 inhabitants.

  • WASHINGTON PARK

    Washington Park is a Village in St. Clair county with -10 000 inhabitants.

  • CASEYVILLE

    Caseyville is a Village in St. Clair county with -5 000 inhabitants.

  • DUPO

    Dupo is a Village in St. Clair county with -4 000 inhabitants.

  • FREEBURG

    Freeburg is a Village in St. Clair county with -4 000 inhabitants.

  • LEBANON

    Lebanon is a City in St. Clair county with -4 000 inhabitants.

  • MILLSTADT

    Millstadt is a Village in St. Clair county with -3 000 inhabitants.

  • ALORTON

    Alorton is a Village in St. Clair county with -3 000 inhabitants.

  • FAIRMONT CITY

    Fairmont City is a Village in St. Clair county with -2 500 inhabitants.

  • SMITHTON

    Smithton is a Village in St. Clair county with -2 500 inhabitants.

  • MARISSA

    Marissa is a Village in St. Clair county with -2 500 inhabitants.

  • NEW ATHENS

    New Athens is a Village in St. Clair county with -2 000 inhabitants.

  • ST. LIBORY

    St. Libory is a Village in St. Clair county with -1 000 inhabitants.

  • LENZBURG

    Lenzburg is a Village in St. Clair county with -1 000 inhabitants.

  • SUMMERFIELD

    Summerfield is a Village in St. Clair county with -500 inhabitants.

  • FAYETTEVILLE

    Fayetteville is a Village in St. Clair county with -500 inhabitants.

  • EAST CARONDELET

    East Carondelet is a Village in St. Clair county with -500 inhabitants.

  • SAUGET

    Sauget is a Village in St. Clair county with -500 inhabitants.

Birth certificate - U.S. Vital Records
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