Robert Pena Jr. was sentenced Tuesday to six years and nine months to 14 years in prison.
Warrington police said Pena, 40, molested the three girls when they were about 10.
The assaults happened in homes in Warrington, Doylestown, Buckingham and Upper Black Eddy, according to court documents. Police said Pena knew the victims.
Pena pleaded guilty in November to two counts of aggravated indecent assault and one count of indecent assault of someone younger than 13. All charges are felonies.
The abuse happened between January 2008 and November 2019, according to police.
The victims read impact statements during Pena s sentencing Tuesday. They detailed the effect his actions had on him, which included negatively affecting their schooling and mental health, and how some developed trust issues.