 The per capita income for the borough was $19,540.About 4.2% of families and 5.3% of the population were below the poverty line, including 2.8% of those under age 18 and 9.4% of those age 65 or over.Jennerstown was first settled in the late 18th century as a stage coach stop on the Forbes Road, one of the first roads constructed by English-speaking settlers over the Allegheny Mountains.