St. Charles County, Missouri

St. Charles County is part of the St. Louis metropolitan area in eastern Missouri. The county seat is St. Charles, the first state capital of Missouri. The firm serves Missouri clients from the Mt. Vernon, Illinois office.

County Information

County seat
St. Charles

Courts serving St. Charles County

Judicial circuit
N/A
County seat
St. Charles
Courthouse
Circuit Court Clerks | State of Illinois Office of the Illinois Courts
Courthouse address
N/A
Court telephone
N/A
Chief judge
N/A

Divisions and services listed for this court: Circuit Court Clerks by Circuit.

Work and industry in St. Charles County

  • Ameristar Casinos — 1,620 employees
  • St. Charles County — 1,500 employees
  • SSM St. Joseph Health Center — 1,352 employees
  • Boeing — 1,170 employees
  • City of St. Charles School District — 852 employees
  • Client Services Inc. — 698 employees
  • Lindenwood University — 618 employees
  • AT&T Missouri — 600 employees
  • Central States Coca-Cola — 500 employees
  • City of St. Charles — 494 employees

8,974 business establishments, led by health care and social assistance (1,250), retail trade (1,071), construction (1,022), accommodation and food services (848), professional, scientific, and technical services (843). 2022 County Business Patterns.

Getting to and around St. Charles County

I-64 · I-70 · US-40 · US-61 · US-67 · MO-79 · MO-94 · MO-364 · MO-370

St. Charles County Courthouse · Lindenwood University · SSM St. Joseph Health Center

About St. Charles County

  • Katy Trail State Park
  • Historic Main Street
  • Christmas Traditions Festival
  • Festival of the Little Hills
  • Missouri River Irish Festival

Community information compiled from api.census.gov, en.wikipedia.org, illinoiscourts.gov and reviewed 2026-09-10.

Legal Services in St. Charles County

Black, Ballard, McDonald, P.C. represents St. Charles County clients in the following practice areas:

St. Charles County sits in Illinois's N/A, and county matters are filed at the Circuit Court Clerks | State of Illinois Office of the Illinois Courts.

Contact the Firm

The office is located in Mt. Vernon, Illinois. Contact an attorney to discuss your St. Charles County matter.