First Baptist Church-Hillside Verify info with this place Hours or services may differ because of COVID-19 First Baptist Church is a Baptist church in Hillside New Jersey. This American Baptist church serves Union County NJ 166 Hillside Ave Hillside , New Jersey 07205 United States Get Directions (973) 926-1244 Category: Churches Tags: Baptist Previous Next Tags: BaptistCategory: Churches 166 Hillside Ave Hillside , New Jersey 07205 United StatesPhone: (973) 926-1244