There are 36 zip codes in Middlesex County, New Jersey. The most populated is 8854, located in Piscataway. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | City | Population |
|---|---|---|
| 08854 | Piscataway | 60,233 |
| 08861 | Perth Amboy | 58,136 |
| 08901 | New Brunswick | 56,870 |
| 08831 | Monroe Township | 54,229 |
| 08816 | East Brunswick | 49,027 |
| 08817 | Edison | 48,140 |
| 08902 | North Brunswick | 43,037 |
| 08857 | Old Bridge | 40,430 |
| 08820 | Edison | 39,565 |
| 07747 | Matawan | 32,749 |
| 07008 | Carteret | 25,170 |
| 08859 | Parlin | 24,487 |
| 07080 | South Plainfield | 24,256 |
| 08879 | South Amboy | 22,514 |
| 07095 | Woodbridge | 20,927 |
| 08536 | Plainsboro | 20,693 |
| 08872 | Sayreville | 19,613 |
| 08837 | Edison | 19,544 |
| 07067 | Colonia | 18,581 |
| 08830 | Iselin | 18,511 |
| 08840 | Metuchen | 18,075 |
| 08852 | Monmouth Junction | 18,068 |
| 07001 | Avenel | 17,211 |
| 08882 | South River | 16,081 |
| 08904 | Highland Park | 14,996 |
| 08846 | Middlesex | 14,525 |
| 08824 | Kendall Park | 13,297 |
| 08863 | Fords | 12,663 |
| 08512 | Cranbury | 12,519 |
| 08850 | Milltown | 8,410 |
| 08810 | Dayton | 8,361 |
| 08884 | Spotswood | 8,152 |
| 07064 | Port Reading | 4,031 |
| 08832 | Keasbey | 2,745 |
| 07077 | Sewaren | 2,695 |
| 08828 | Helmetta | 2,302 |