Communities with the lowest median income

Aram Boghosian for The Boston Globe
15. Fitchburg
2009 median income: $55,814
1999 median income: $55,845
1989 median income: $57,708
1979 median income: $53,055
30-year change: 5.2 percent
Fun Fact: Who knew that Fitchburg had a large wizarding population? The book "Quidditch Through the Ages" from the Harry Potter universe lists a team called the Fitchburg Finches as one of two representing the United States.
Pictured: Fitchburg commuter rail station