What is the area code for North Caldwell, NJ?

North Caldwell uses 2 area codes: 973 and 862. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.

What time zone is North Caldwell in?

North Caldwell is in the Eastern time zone.

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North Caldwell, New Jersey (population 6,815) uses area codes 973 and 862.

Area code973

Area code862

Time zoneEastern

Local time now…

North Caldwell has no telephone exchange of its own in NANPA records; it is served by the Caldwell exchange about 3.2 km away.

North Caldwell and nearby cities in area code 973

55 prefixes are assigned to the Caldwell exchange: 45% mobile, 22% VoIP and cable, 33% landline.

Area code	Prefixes serving North Caldwell	Main carriers in this code
973	42	Verizon, Lumen (Level 3), Verizon Business (MCImetro)
862	13	T-Mobile, Onvoy (Sinch), AT&T Mobility

Numbers starting with these first six digits were originally assigned to the Caldwell exchange.

What is the area code for North Caldwell, NJ?: North Caldwell uses 2 area codes: 973 and 862. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is North Caldwell in?: North Caldwell is in the Eastern time zone.