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# North American Numbering Plan Area Code 973

The 973 area code serves the northern and central portions of New Jersey, encompassing major cities including Newark, Jersey City, and Paterson. Established in 1997 as a split from the original 201 area code, the 973 area code was created to accommodate the growing demand for telephone numbers in the densely populated region. This area code covers approximately 2,400 square miles and serves millions of residents and businesses across Essex, Morris, Union, and portions of surrounding counties, making it one of the most frequently used area codes in the state.

The 973 area code operates within the North American Numbering Plan (NANP), a coordinated system that allocates telephone numbers across the United States, Canada, and other North American territories. The NANP uses a three-digit area code followed by a seven-digit local phone number to create a standardized numbering framework that enables efficient telecommunications routing and management. The Federal Communications Commission (FCC) and regional telephone regulatory bodies oversee the assignment of area codes based on population density, geographic boundaries, and projected telecommunications needs, ensuring that each region receives appropriate numbering resources to support its growing population and business infrastructure.