City Government-Executive Offices
City Of O'fallon
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallon.org
Executive Offices
O'Fallon City Hall
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallon.org
City Govt-Regulation/Adm-Comms/Utilities
O'Fallon City Public Works
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallonliving.com
City Urban Planning and Development
O'Fallon City Zoning Admin
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallon.org
Government Offices City Village and Township
O'Fallon Engineering
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallon.org
Fire Department, Not Including Volunteer
Ofallon-Shiloh Valley-Caseyville Township Fire Protetion District
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallon.org
Clubs
Parks Ofallon And Recreation Foundation
255 South Lincoln Avenue O Fallon, IL 62269
(618) 624-4500 ofallon.org