Cambridge Highlands also known as "Area 12", is a neighborhood of Cambridge, Massachusetts bounded by the railroad tracks on the north and east, the Belmont town line on the west, and Fresh Pond on the south. In 2005 it had a population of 673 residents living in 281 households, and the average household income was $56,500. Blair Pond, on the western edge of Cambridge Highlands, is part of Alewife Brook Reservation, which continues north of the Fitchburg Line.