School District · New Jersey
Mountainside Borough School District
📍 Mountainside, NJ · Union County · NCES LEAID 3411040
District Contact & InformationSource: NCES CCD 2024–25
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District Mailing Address
1497 Woodacres Drive, Mountainside, NJ 07092
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NCES District ID (LEAID)
3411040
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District Type
Public School District
Zip Codes Served by Mountainside Borough School District1 zip code
Frequently Asked Questions
What zip codes are in Mountainside Borough School District?▼
Mountainside Borough School District serves 1 zip code: 07092. Zip codes and district boundaries do not line up exactly, so confirm your exact address with the district office before you rely on an assignment.
How is Mountainside Borough School District rated?▼
Mountainside Borough School District has an overall rating of 10 out of 10 (Excellent), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 96th percentile among New Jersey school districts. Ratings are percentile-ranked within New Jersey only and are not comparable across states.
How many students attend Mountainside Borough School District?▼
The NCES Common Core of Data directory reports enrollment of 747 students across 2 schools for Mountainside Borough School District.
What grades does Mountainside Borough School District serve?▼
Mountainside Borough School District is listed in the NCES directory as serving grades Pre-K – 8th.
How do I contact Mountainside Borough School District?▼
You can reach Mountainside Borough School District by phone at (908)232-3232 or by mail at 1497 Woodacres Drive, Mountainside, NJ 07092. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Mountainside Borough School District
Mountainside Borough School District is a public school district serving 1 zip code in New Jersey, primarily in Union County. It carries an overall rating of 10/10 (Excellent), the 96th percentile among New Jersey districts. That rating reflects the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts with a 2017–18 fallback for the rest) and is ranked only against other New Jersey districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can
be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your
assignment with the district office at (908)232-3232 before making a housing decision.