Mayor & Council

Mountainside is governed by a Mayor and Council form of government, as authorized through the Option Municipal Charter Law (Faulkner Act). Enacted by the State Legislature in 1950, this form of local New Jersey government provides for the election of a Mayor for a term of four years and a Borough Council of varied complement. In our case, the Borough Council consists of six members, elected for staggered three year terms. Both the Mayor and Borough Council are elected at-large, that is, to represent the entire community. Elections for all officials in Mountainside are conducted during the November General Election. The Borough Council holds its meetings on the 1st and 3rd Tuesdays of each month at 7:30 pm in Borough Hall. 

Mayor Paul N. Mirabelli

Phone: 908-461-9070
  • Term ends 12/31/2027
  • 13 years as Councilman
  • 3 years as Council President
  • 15 Years as Mayor
  • Mountainside resident since 1990
  • Portfolio: Police Committee 

Rene Dierkes

Phone: 908-403-6685

Email: Click Here to Email

  • Councilman, term expires 12/31/2028
  • 12 years as Councilman
  • Mountainside resident since 1999
  • Portfolio: Fire, Administrative & Executive, Recreation, Board of Tax Assessors

Donna Pacifico

Phone: 908-341-6739
Email: Click Here to Email

  • Councilwoman, term expires 12/31/2028
  • 4 years as Councilwoman
  • 2 years as Council President
  • Mountainside resident since 1991
  • Portfolio: Recreation, Board of Health, Police, Solid Waste/Recycling, Administration & Executive, Historical Restoration Committee 

Steven Matejek

Phone: 908-341-6958
Email: Click Here to Email

  • Councilman, term expires 12/31/2026
  • 5 years as Councilman
  • Mountainside resident since 1976
  • Portfolio:  Police, Recreation, Public Works/Facilities, Recreation, Board of Education 

Donald Rinaldo, Jr.

Email: Click Here to Email

  • Councilman, term expires 12/31/2027
  • 1 year as Councilman
  • Mountainside resident since 1969
  • Portfolio: Public Works, Fire, Solid Waste/Recycling, Library, Board of Tax Appeals 

Valerie Wass

Email: Click Here to Email

  • Councilwoman, term expires 12/31/2026
  • 1 year as Councilwoman
  • Portfolio: Public Works/Facilities, Rescue Squad, Planning Board, Media & Information, Children's Specialized Hospital, Senior Citizen Services  

Alex Van Deusen

Email: Click Here to Email

  • Councilman, term expires 12/31/2027
  • 1 year as Councilman
  • Portfolio: Administrative and Executive, Fire, Solid Waste & Recycling, Media & Information, Shade Tree  

John N. Post, Esq.

  • Borough Attorney
  • 53 years as Borough Attorney
  • Firm: Post, Polak, Goodsell, & Strauchler, P.A.
  • Mountainside resident since 1972

Contact Us

Official Website of Mountainside, New Jersey

1385 US Highway 22 East

Mountainside, NJ 07092

908 232 2400

Meeting Schedule

All meetings take place at the Mountainside Borough Hall, (1385 Route 22 East) unless otherwise noted.

Borough Council:
Work: 1st Tues. at 7:30 pm
Regular: 3rd Tues. at 7:30 pm

Board of Adjustment
4th Tues. at 7:30 pm

Municipal Court Court
held each Thurs. at 9:00 am & the last Wed. evening at 5:00 pm

Planning Board
4th Tues. at 7:30 pm

Board of Health
2nd Mon. at 7:00 pm

Library Board of Trustees
3rd Mon. at 7:30 pm (Meetings held at the Mountainside Public Library)