Contact Us

Pay Taxes

Municipal Ordinances

Meeting Agendas

Borough of Mountainside

Things to do

Recycling

City Government

Parks and Recreation

Children's Programs

Construction

Community Pool Information

Mountainside America's 250th Events

News

MOUNTAINSIDE TOWN HALL MEETING
By Borough of Mountainside - Jul 01, 2026
PURCHASE AMERICA'S 250TH MOUNTAINSIDE T-SHIRTS
Jun 22, 2026
Deerfield and Borough Hall Tennis Courts Resurfacing
May 22, 2026
Mountainside America 250 Events (May and June)
May 05, 2026
2026 American Water Main Replacement Projects
By Borough of Mountainside - Apr 20, 2026

Register for the Mountainside Community Pool!

Become a Member of the Mountainside Community Pool NOW!!!

Registration is now open.

Visit Civic Rec to register.

How do I?

Here are Borough of Mountainside's services

Apply

Submit

Request

Pay

Events

Connect with Us on Facebook

Mountainside Borough

Subscribe to our News

Stay up to date on the borough's activities, events, programs and operations by subscribing to our news.