Sainte-Hélène-de-Chester () is a municipality located in the Centre-du-Québec region of Quebec, Canada.
It was formerly a township municipality named Chester-Est, but it changed its name and its status on May 3, 2008.http://www.stat.gouv.qc.ca/publications/referenc/pdf2008/modif_mai08.pdf
The old Sainte-Hélène-de-Chester and Trottier Mill were two former small towns within this municipality.
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