For adult entertainment on Halloween - there are lots of parties going on in Newark. The most well-known event is Hell's Kitchen's party. This year it is Saturday & Sunday. Admission is $15 (bought in advance). For more info visit their site.
Other parties can be found like:
Vivoween at Vivo Lounge featuring open bars, buffet and $1500 in cash prizes. Find out more online
For the non-alcoholic variety - you can also find a Halloween Bike Scavenger Hunt starting at Hell's Kitchen on Saturday morning.
For the kids there are a few great events as well. The city is sponsoring a Parade and Party in North Ward but all are welcome - it includes candy, gifts, refreshments and entertainment.
The Newark Museum will also celebrate with Dia de los Muertos (Day of the Dead) - with great craft activities and workshops Saturday afternoon.