Hillside, NJ Post Offices

Hillside, New Jersey has a population of 21,841. According to the 2021 census, the city's 2 post offices serve 7,257 households with a median income of 7,257. The city is located in Union County and has a land area of 7,165,812 and a water area of 38,905.

Post Office
Address
Phone
Hours
Hillside, NJ Post Office 397 Hillside Ave, Hillside, New Jersey, NJ, 07205-9992
973-926-2645
Today 10:00:00 - 17:00:00
Hillside, NJ Post Office 1146 Liberty Ave, Hillside, New Jersey, NJ, 07205-9991
908-527-0648
Today 10:00:00 - 16:15:00

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