551 Area Code Details: Location Map, Time Zone & More

551 Area Code Details

551 Area Code Details: Location Map, Time Zone & More

The 551 area code is located in the state of New Jersey and, based on data from Intelius, covers approximately 36,597 phone numbers. Jersey City is the largest city within this area code with a population of approximately 254,565.

Have you received a call from a number with a 551 area code? Find out who’s calling you by doing a reverse phone lookup. Intelius will provide you with a report that includes (when available) the phone type and provider, the owner’s name, their current and past addresses, age, family members, and more.

Where is 551 Area Code?

551 area code telephone area codes in the North American Numbering Plan in the U.S. state of New Jersey. Area code 201 was the area code assigned to the entire state of New Jersey in 1947, when the North American area code system was formulated.

After splits in 1958, 1991 and 1997, it covers the northeasternmost portion of the state, including most of Hudson and Bergen counties, bordering the Hudson River and New York City.

Major cities in the numbering plan area include Bayonne, Jersey City, Hoboken, Hackensack, Secaucus and Englewood. Area code 551 is an overlay code to the same numbering plan area that was installed in 2001.

History of Area Code 551 and 201

The 201 area code was the first numbering plan area code (NPA) assigned from the original NPAs when AT&T designed the North American Numbering Plan in 1947.

It was also the first area code with direct-distance dialing (DDD) service, when in 1951 the first direct-dial long-distance call was made from Englewood, NJ to Alameda, California.

The 201 area code originally covered the entire state of New Jersey, despite the state’s dense population. Most of New Jersey’s population is concentrated in the large metropolitan suburbs of New York City in the northeast and the suburbs of Philadelphia in the southwest.

The creation of numbering plan areas was based on the anticipated number of central offices needed in each area, and a plan area could only accommodate slightly more than 500 central offices.

In 1958, 201 was restricted to northern New Jersey, while the area of ​​the state capital, Trenton, to the south, including the southern Jersey shore and the New Jersey side of the lower Delaware Valley, received the code of area 609.

For the next 33 years, the 201 area code served Bergen, Hudson, Ocean, Essex, Union, Morris, Passaic, Hunterdon, Somerset, Middlesex, Monmouth, Sussex, and Warren counties, a region largely coextensive with the New Jersey side of New York counties. Urban area.

As the central region of New Jersey grew during the 1980s, the northeast section of the state lost a considerable portion of its population due to the decline of its major cities, including Newark, Paterson, Clifton, and Elizabeth. On June 8, 1991, the 908 area code was split from 201; primarily serves the north-central regions of the state.

In four years, 201 nearly sold out once again due to the proliferation of cell phones, pagers, and fax machines. The supply of numbers was further limited because the entire northern half of the state is a single LATA, meaning that the numbers in 908 were not available for use.

On June 1, 1997, Essex and Passaic counties, respectively, home to Newark and Paterson, the state’s third and largest cities, as well as Morris and Sussex counties, were divided with area code 973.

This left Hudson and Bergen counties, the two most densely populated counties in the state and the closest to New York City, as the only counties in the 201 plan area.

The 1997 split was intended to be a long-term solution. However, the demand for new numbers continued in Hudson and Bergen counties, and it was clear that the area would need another area code.

Verizon, the dominant phone company in New Jersey, pushed for an overlap rather than a split. Overlays were a new concept at the time and were controversial because they required the implementation of ten-digit dialing. However, Verizon wanted to save its customers the burden of changing phone numbers.

The 551 area code was created in 2001 to overlap 201, along with the 862 and 848 area codes, which overlap the 973 and 732 area codes, respectively. With the implementation of the overlay area codes on December 1, 2001, ten-digit dialing became mandatory in northern New Jersey.

Is area code 551 toll free?

Area code 551 was later assigned along with 201 in 2001 as an overlay. 201 Area Code-Location, Time Zone. Toll Free? Scam? Who’s Calling.

StateNew Jersey
Is Area Code 201 Toll Free?No
Major CitiesHudson and Bergen

What is area code 571 in USA?

Area codes 703 and 571 are the North American Numbering Plan telephone area codes for Northern Virginia, including the independent cities of Alexandria, Fairfax, Falls Church, Manassas, and Manassas Park, as well as all of Arlington and Fairfax counties and parts of Fauquier, Loudoun, Prince William, and Stafford.

If I have a 201 phone number, do I need to change to 551?

No, you do not need to change your existing 201 phone number to 551. The 551 area code overlays the 201 area code, so if you already have a 201 number, you can keep it.

What is the ZIP code for the 551 area code?

The 551 area code spans multiple ZIP codes across northern NJ. Some examples include 07522 for Hackensack, 07505 for Paterson, and 07055 for Clifton. The area code is not tied to a single ZIP code.v


Calls From 551 Area Code
551 Area Code Time Zone
551 Area Code Location
International Country Code 551
551 Area Code Mexico
511 Area Code Zip Code
917 Area Code
973 Area Code

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