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HTC Corporate Office

213 South Main Street
P.O. Box 149
Waterloo, Illinois 62298

(618) 939-6112
(888) 482-8353

Hours of Operation
M-F 8:00A - 4:30P

For the hearing impaired, call:
(618) 939-5900 (TYY Only)

156 Waterloo Commons Drive
Waterloo, Illinois 62298

(618) 939-5600

Hours of Operation
M-F 8:00A - 7:00P
Sat 8:00A - 5:00P

170 Columbia Centre
Columbia, Illinois 62236

(618) 281-2378

Hours of Operation
M-F 8:00A - 7:00P
Sat 8:00A - 5:00P

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