Introduction
The 862 area code is a full overlay on 973, covering northeastern New Jersey — Essex County (Newark), Morris County, Passaic County, Sussex County, and portions of surrounding counties. Newark is New Jersey's largest city and home to Newark Liberty International Airport, a major East Coast hub for United Airlines. The Morristown corridor in Morris County is one of New Jersey's most important corporate centers, housing pharmaceutical and financial services companies. 862 was added in 2001 as northeastern NJ number demand grew, and it remains one of the most economically dense area codes on the East Coast.
Companies in pharmaceutical research, financial services, logistics, and healthcare in northeastern New Jersey benefit from an 862 number that signals presence in the Newark metro and Morris County corporate corridor. Newark Airport's logistics and cargo operations, the Morristown corporate campus cluster, and the dense suburban business community across Essex and Morris counties all respond better to calls from local New Jersey numbers than from out-of-state prefixes.
- Full overlay on 973, assigned April 2, 2001, with mandatory 10-digit dialing effective December 1, 2001
- 973 itself split from the original 201 code (New Jersey's 1947 area code) on June 1, 1997
- Covers Newark, Morristown, Paterson, and the Essex/Morris/Passaic/Sussex/Warren county corridor on Eastern Time
Where the 862 Area Code Reaches
The 862 area code is an overlay on 973 and covers the same footprint — the northwestern portion of New Jersey, running from Newark and the dense Essex County urban core west through the corporate suburbs of Morris County to the rural communities of Sussex and Warren counties.
- Essex County — Newark (New Jersey's largest city), East Orange, Montclair, West Orange, Livingston, Bloomfield, and Millburn
- Passaic County — Paterson, Clifton, Passaic, and Wayne, including major retail, manufacturing, and commercial corridors
- Morris County — Morristown, Parsippany, Dover, Rockaway, and Denville, anchored by corporate campuses and tech parks
- Sussex County — Newton, Sparta, and the rural northwest communities
- Warren County — Phillipsburg, Washington Borough, and the Delaware River corridor
Two codes — 973 and 862 — ring every phone in this region. There is no geographic distinction between them. A 973 number and an 862 number reach the exact same cities, and local callers cannot tell which one they are dialing by the prefix alone. More detail sits on our letsdial page.
Newark, Morris County, and the Pharma Corridor
Newark is the economic center of the 862 footprint — New Jersey's largest city, a major East Coast port, and home to Newark Liberty International Airport, one of the three primary airports serving the New York metro area. The city's economy spans financial services, logistics, healthcare, legal services, and a growing innovation sector anchored by Rutgers-Newark and the New Jersey Institute of Technology.
The Port and Airport Economy
Newark Liberty and the Port of Newark-Elizabeth form one of the most active freight and passenger gateways on the Eastern Seaboard. Distribution, logistics, air cargo, and the professional services that support them employ tens of thousands in the Essex County corridor — generating year-round demand for local business communication from carriers, customs brokers, warehousing firms, and freight forwarders.
Morris County's Corporate Campuses
Morris County to the west of Newark is one of the most corporate-dense counties in New Jersey. Parsippany and Morristown anchor a corridor that has hosted headquarters for AT&T, Pfizer, Novartis, and dozens of other major companies. The county's highway access — Routes 10, 46, 80, and I-287 — made it a preferred location for suburban corporate campuses through the 1970s and 1980s, and a significant concentration of that infrastructure remains active today.
Pharmaceutical and Life Sciences
Northern New Jersey has long been one of the most concentrated pharmaceutical regions in the United States, and Morris County holds a meaningful portion of that cluster. Drug development, clinical operations, regulatory affairs, and associated professional services operate under 862 and 973 numbers — making life sciences one of the most consistent sources of professional call volume in the entire 862 footprint. Bristol Myers Squibb, Sanofi, and Bayer have all maintained significant U.S. operations within the wider northern New Jersey pharma corridor, and the region's density of contract research organizations and specialty logistics firms — many built specifically to move temperature-sensitive drug shipments quickly — gives the 862/973 footprint a genuinely distinct economic character from the finance-heavy identity of nearby Manhattan. More detail sits on our AI receptionist page.
Passaic County: Paterson, Clifton, and Wayne
Paterson is the second-largest city in the 862 footprint and one of the most historically significant industrial cities in the United States — designed by Alexander Hamilton in 1792 as America's first planned industrial city. Today it operates as a densely populated urban center with a large immigrant community, an active small business ecosystem, and strong retail and food service sectors that generate significant inbound call volume.
Wayne and the Suburban Commercial Corridor
Wayne, north of Paterson, represents the suburban face of Passaic County — a major commercial strip along Route 46 with big-box retail, corporate offices, and healthcare facilities. Clifton and Passaic bridge the urban core and the suburbs, with light industrial, distribution, and a dense residential population that reaches into the 862 code's highest-volume consumer markets. Paterson's Great Falls — the second-largest waterfall by volume east of the Mississippi and the original power source for Alexander Hamilton's planned industrial city — is now a National Historical Park, a modest but steady draw for heritage tourism that supports a small cluster of local hospitality and retail businesses distinct from the county's bigger commercial corridors.
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Phone Number Format, Time Zone, and the 973/862 History
All 862 and 973 numbers follow the NANP 10-digit format: 862-XXX-XXXX or 973-XXX-XXXX. Because the two codes overlay the same territory, every local call requires all 10 digits — a bare 7-digit number will not complete. For US long-distance calls, dial 1 + the area code + the 7-digit number; for international calls, dial +1 followed by the 10-digit number.
The entire 862 area code observes Eastern Time — UTC-5 in winter (EST) and UTC-4 during Daylight Saving (EDT). That puts northern New Jersey on the same clock as New York City, Philadelphia, and Boston. Businesses calling into the 862 region from the West Coast face a three-hour gap and should plan outbound campaigns to close before 5 p.m. ET — well before the Newark and Morristown business day ends for most offices.
Northern New Jersey operated under 201 — the original New Jersey code dating to the 1947 launch of the North American Numbering Plan — until the mid-1990s, when demand for new lines outpaced the available number supply.
973 Split from 201 in 1997
On June 1, 1997, 973 split from 201 to serve northern New Jersey's interior — Essex, Passaic, Morris, Sussex, and Warren counties — while 201 retained the Hudson and Bergen County corridor along the Hudson River. Four years later, demand in the 973 region filled its number pool again.
862 Added as an Overlay in 2001
Regulators assigned 862 as an overlay across the identical 973 footprint on April 2, 2001, with mandatory 10-digit dialing taking effect that December 1 once the new code went into active service. A bare seven-digit number has not completed a call within the region since.
How to Get an 862 Number and Build Call Trust
862 and 973 cover the same region and carry equal local recognition. If 862 inventory runs tight in a specific exchange, a 973 number reaches the same customers without any disadvantage. Three paths exist for a northern New Jersey business line; only a cloud phone platform delivers live inventory and same-day activation.
- Cloud phone platform — search available 862 numbers in real time, claim one, and assign it to a seat or team. letsdial activates an 862 line in under three minutes on a free trial, no credit card required.
- Port your existing number — already have a northern New Jersey number with another carrier? Port it in without downtime. letsdial ports numbers in and out at no charge, and the line stays active through the full transfer.
- Wireless SIM or landline carrier — valid for a physical handset, but significantly slower to activate and harder to scale without purchasing hardware per seat.
Signing Outbound Calls from Day One
A fresh 862 number with no call history is vulnerable to spam flags during the first weeks of heavy outbound dialing. Apply STIR/SHAKEN A-level attestation through your carrier so every call arrives verified with your business name on the screen. Northern New Jersey's professional markets — pharmaceuticals, logistics, financial services, and legal — place a premium on verified caller identity, so attestation is not optional for businesses dialing at volume. A cloud provider with an AI receptionist built in also means after-hours calls from pharma or logistics contacts get answered and routed instead of going to a generic voicemail box. That record is published in full as public record for area code 862.
Conclusion
The 862 area code overlays northeastern New Jersey's 973 footprint, covering Newark, Morristown, Paterson, and the corporate corridors of Essex and Morris counties. This guide has covered the pharmaceutical industry concentration, Newark Airport's logistics role, the corporate campus landscape, and the code's 2001 overlay origin. A northeastern NJ number establishes presence in one of the Northeast's most commercially active suburban corridors.
letsdial provisions 862 numbers in minutes on a free trial with automatic STIR/SHAKEN attestation. Activate a northeastern New Jersey number today and reach the pharmaceutical companies, financial services firms, and logistics operations that define the Newark and Morristown business community.
Frequently Asked Questions
Written by Aryan Khan · June 20, 2026
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