Hillsdale, New Jersey

ZIP codes in Hillsdale

Area codes for Hillsdale

• Area code 201

  In service since 1947. Shares its area with 551. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 551

  In service since December 29, 2001. Shares its area with 201. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Hillsdale is in the Eastern Time zone.

Towns near Hillsdale

• Woodcliff Lake2.4 km (1.5 mi)
• Township Of Washington2.7 km (1.7 mi)
• Park Ridge3.1 km (1.9 mi)
• Westwood3.2 km (2.0 mi)
• Emerson3.7 km (2.3 mi)
• Montvale4.7 km (2.9 mi)
• Ho Ho Kus5.1 km (3.2 mi)
• Old Tappan5.2 km (3.2 mi)