City Administrator

The City Administrator is appointed by the Mayor and City Council, and provides leadership to the organization in the implementation of Council policies and goals, as well as quality services to the community.

The City Administrator provides coordination and development of City departments and helps to resolve issues by promoting communications among elected officials, citizens and staff.

The City Administrator is responsible for submission of the City budget and capital improvement plan and responsible for its administration after the Council's adoption. The City Administrator keeps the Council advised of the City’s financial condition and the future needs of the City.

Each week, City Administrator Bonnie Therrien will share her weekly report to the City Council for the community to review. A link to the report may also be found in the weekly O'Fallon Update e-newsletter.

Weekly Report from the City Administrator (PDF)


Contact the City Administrator

Bonnie Therrien, City Administrator This email address is being protected from spambots. You need JavaScript enabled to view it. 636-379-5504
Lenore Toser-Aldaz, Assistant City Administrator This email address is being protected from spambots. You need JavaScript enabled to view it. 636-379-5538
Susan Lane, Executive Assistant This email address is being protected from spambots. You need JavaScript enabled to view it. 636-379-5503