03858 Frequently Asked Questions

A: ZIP Code 03858 is Located in Newton New Hampshire. Portions of 03858 are also in East Kingston, Plaistow, South Hampton, Newton Junction.

A: ZIP Code 03858 is Located Entirely in Rockingham County New Hampshire.

A: The Area Code for 03858 is 603.

A: ZIP Code 03858 is in the New Hampshire 1st Congressional District.

A: 03858 is within New Hampshire House of Representatives District Rockingham 14 and New Hampshire House of Representatives District Rockingham 20.

A: 03858 is within New Hampshire State Senate District 22 and New Hampshire State Senate District 23.

A: The 2022 population of ZIP Code 03858 is 4808. The population growth rate in 03858 is -0.48%. The population density of 03858 is 484.

A: The majority race/ethnicity of people residing in 03858 is White (99.50%). The majority race/ethnicity of students attending public schools in 03858 is White(89.55%).

A: The median household income in 03858 is $135,863 (2021) and the average adjusted income is $306,440 (2021).