Town Hall Address 210 Chestnut St. Roselle, NJ 07203 United States- Union County Website http://www.boroughofroselle.com County Clerk 908-259-3012 210 Chestnut St. Roselle, NJ 07203 United States County Admin 908-259-3028 Roselle, NJ 07203 United States Assessor 908-259-3020 Thursday: 2:00 P.M. - 6:00 P.M. 210 Chestnut St. Roselle, NJ 07203 United States Tax Collector 908-245-9000 210 Chestnut St. Roselle, NJ 07203 United States Attorney 908-259-3002 210 Chestnut St. Roselle, NJ 07203 United States Mayor 908-259-3015 210 Chestnut St. Roselle, NJ 07203 United States Municipal Court 908-259-3042 210 Chestnut St. Roselle, NJ 07203 United States County Union