08540 Frequently Asked Questions

A: ZIP Code 08540 is Located in Princeton New Jersey. Portions of 08540 are also in Ten Mile Run, East Rocky Hill, Kingston, Griggstown, Franklin Township (Somerset County), West Windsor Township, Lawrence Township (Mercer County), South Brunswick Township, Hopewell Township (Mercer County).

A: ZIP Code 08540 is Located Primarily in Mercer County New Jersey with Portions in Somerset County and Middlesex County.

A: The Current Sales Tax in ZIP Code 08540 is 6.6%

A: The Area Codes for 08540 are 609, 640 /, 732, 848 and 908

A: 08540 is within by the New Jersey 12th Congressional District and the New Jersey 3rd Congressional District.

A: 08540 is within New Jersey State Assembly District 14, New Jersey State Assembly District 15, New Jersey State Assembly District 16 and New Jersey State Assembly District 17.

A: 08540 is within New Jersey State Senate District 14, New Jersey State Senate District 15, New Jersey State Senate District 16 and New Jersey State Senate District 17.

A: The 2022 population of ZIP Code 08540 is 48513. The population growth rate in 08540 is -0.92%.

A: The majority race/ethnicity of people residing in 08540 is White (57.96%). The majority race/ethnicity of students attending public schools in 08540 is White(47.33%).

A: The median household income in 08540 is $163,074 (2021) and the average adjusted income is $240,610 (2020).