Princeton Junction, NJ ZIP code
The ZIP code for Princeton Junction, New Jersey is 08550. It is in Mercer County.
- Population in these ZIPs
- 21,067
- Avg. median income
- $224,200population-weighted
- Typical home value
- $1,010,500population-weighted
- Metro area
- Trenton-Princeton, NJ
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Princeton Junction, NJ ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 08550 | 21,067 | $224,213 | $1,010,500 |
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 Princeton Junction
- Windsor 3 mi
- Plainsboro 4 mi
- Hightstown 5 mi
- Princeton 5 mi
- Lawrence Township 5 mi
- Trenton 5 mi
- Cranbury 6 mi
- Kingston 7 mi
- Rocky Hill 8 mi
- Monmouth Junction 9 mi
- Allentown 9 mi
- Roosevelt 9 mi
Frequently asked questions
What is the ZIP code for Princeton Junction, NJ?
The ZIP code for Princeton Junction, NJ is 08550.
What county is Princeton Junction, New Jersey in?
Princeton Junction ZIP codes are in Mercer County.