Cambridge, MA ZIP codes
Cambridge, Massachusetts has 6 ZIP codes, including 1 PO Box ZIP. They are in Middlesex County.
- Population in these ZIPs
- 119,000
- Avg. median income
- $129,500population-weighted
- Typical home value
- $1,052,100population-weighted
- Metro area
- Boston-Cambridge-Newton, MA-NH
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Cambridge, MA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 02138 | Middlesex County | 38,509 | $119,967 | $1,133,700 |
| 02139 | Middlesex County | 40,033 | $134,586 | $990,900 |
| 02140 | Middlesex County | 21,204 | $135,286 | $1,066,200 |
| 02141 | Middlesex County | 14,517 | $126,522 | $899,600 |
| 02142 | Middlesex County | 4,737 | $147,723 | $1,311,400 |
| 02238 PO Box | Middlesex County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Cambridge
- Somerville 1 mi
- Allston 2 mi
- Charlestown 2 mi
- Roxbury Crossing 3 mi
- Brighton 3 mi
- Brookline 3 mi
- Medford 3 mi
- Everett 3 mi
- Roxbury 4 mi
- Boston 4 mi
- Watertown 4 mi
- Belmont 4 mi
Frequently asked questions
What is the ZIP code for Cambridge, MA?
Cambridge, MA has 6 ZIP codes: 02138, 02139, 02140, 02141, 02142 and 02238.
What county is Cambridge, Massachusetts in?
Cambridge ZIP codes are in Middlesex County.
Which Cambridge ZIP codes are PO Boxes?
02238 is a PO Box or single-organization ZIP code; it has no residential delivery area.