Princeton, NJ ZIP codes
Princeton, New Jersey has 5 ZIP codes, including 2 PO Box ZIPs. They are in Mercer County.
- Population in these ZIPs
- 57,313
- Avg. median income
- $173,600population-weighted
- Typical home value
- $960,000population-weighted
- Metro area
- Trenton-Princeton, NJ
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Princeton, NJ ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 08540 | Mercer County | 50,388 | $176,983 | $963,100 |
| 08541 PO Box | Mercer County | — | — | — |
| 08542 | Mercer County | 2,533 | $105,524 | $898,200 |
| 08543 PO Box | Mercer County | — | — | — |
| 08544 | Mercer County | 4,392 | — | — |
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
- Kingston 4 mi
- Plainsboro 4 mi
- Rocky Hill 5 mi
- Lawrence Township 5 mi
- Princeton Junction 5 mi
- Skillman 5 mi
- Pennington 7 mi
- Trenton 7 mi
- Hopewell 7 mi
- Monmouth Junction 7 mi
- Belle Mead 8 mi
- Cranbury 8 mi
Frequently asked questions
What is the ZIP code for Princeton, NJ?
Princeton, NJ has 5 ZIP codes: 08540, 08541, 08542, 08543 and 08544.
What county is Princeton, New Jersey in?
Princeton ZIP codes are in Mercer County.
Which Princeton ZIP codes are PO Boxes?
08541 and 08543 are PO Box or single-organization ZIP codes; they have no residential delivery area.