11742 Frequently Asked Questions

A: ZIP Code 11742 is Located in Holtsville New York. Portions of 11742 are also in Holbrook, Brookhaven (town), Islip (town).

A: ZIP Code 11742 is Located Entirely in Suffolk County New York.

A: The Current Sales Tax in ZIP Code 11742 is 8.6%

A: The Area Codes for 11742 are 631 and 934

A: 11742 is within by the New York 2nd Congressional District and the New York 1st Congressional District.

A: ZIP Code 11742 is in New York State Senate District 5.

A: 11742 is within New York State Assembly District 3 and New York State Assembly District 8.

A: The 2022 population of ZIP Code 11742 is 13448. The population growth rate in 11742 is -1.61%.

A: The majority race/ethnicity of people residing in 11742 is White (79.48%). The majority race/ethnicity of students attending public schools in 11742 is White(63.33%).

A: The median household income in 11742 is $115,984 (2021) and the average adjusted income is $84,890 (2020).