ZIP Code 02139

ZIP code 02139, covering part of Cambridge, ranks among the more affluent areas in Massachusetts, with a median household income of $134,586 and per-capita income of $74,801. Home values are steep: the median property is worth $1,087,500, and the county-level effective property tax rate of 1.03% means owners pay a substantial sum each year. Sales tax in the area stands at 6.25%. High earnings here accompany high housing costs and a meaningful property tax obligation, so the overall tax picture reflects a well-off community rather than a middle- or working-class one.