Area Code 201 – New Jersey

Overview of Area Code 201

Area code 201 is a geographic North American Numbering Plan Area (NPA) code serving the northeastern portion of New Jersey, United States. It is one of the original 86 area codes established in 1947 and originally covered the entire state of New Jersey. Today, 201 is assigned exclusively to the northeastern corner of the state, including the counties of Bergen and Hudson, and parts of Passaic and Essex. This region is part of the New York metropolitan area and includes major cities such as Jersey City, Hoboken, Newark (partial), and Hackensack.

Geographic Coverage and Major Cities

The 201 area code covers a densely populated area adjacent to New York City. Key municipalities served include Jersey City, the second most populous city in New Jersey; Hoboken, known for its waterfront and transit connections; and the suburban communities of Bergen County such as Hackensack, Teaneck, and Fort Lee. The region is a major economic hub with significant commercial, financial, and transportation infrastructure.

Dialing Formats and Procedures

For local calls within the 201 area code, callers must use the 10-digit dialing format: 201-XXX-XXXX. This is mandatory because the region is served by multiple area codes (201 and 551) as an overlay. For calls from outside the 201 area code but within the United States, the international format is +1 201 XXX XXXX. When calling from abroad, dial the international access prefix (e.g., 011 from most countries), followed by the country code 1, then the area code and number. For example, to call a number in Jersey City from the UK, you would dial: 00 1 201 555 0123.

Overlay and Numbering Resources

In 2001, area code 551 was introduced as an overlay for the same geographic region to meet the growing demand for telephone numbers. This means that new numbers in the area may be assigned either 201 or 551. Consequently, 10-digit dialing is required for all local calls, even between numbers with the same area code. This overlay system ensures that the region has sufficient numbering resources while preserving the existing 201 numbers.

Caller Instructions

For local callers within the 201/551 region: always dial 10 digits (area code + 7-digit number). For callers from other parts of the United States: dial 1 + 201 + 7-digit number. For international callers: dial your country's exit code, then 1, then 201, then the 7-digit number. Note that calls to 201 numbers are treated as domestic calls within the U.S. and are subject to standard long-distance rates if calling from outside the local calling area.