Population Growth in Acton

How is Acton's population changing over time? As shown below, Acton is growing faster than any of its neighbors (source: U.S. Census):

Rapidly growing population puts increased strain on limited infrastructure such as road capacity, schools and emergency services. According to the Acton 2020 Master Plan, "...most new residential development now comes at an increasing cost: more traffic, more risk to water supplies, more infrastructure to pay for and maintain, and more costs for services."