Area Code Atlas

NPA 561 split from 407

Area code 561 began serving southeastern Florida in 1996 after splitting from area code 407. The new code covered Palm Beach County and the Treasure Coast until further splits occurred.

NPA 561 split from 407

Area code 561 was created on May 13, 1996, as a geographic split from area code 407. The new code served Palm Beach County and several major cities, while 407 continued to serve central Florida.

Extraordinary NPA-Specific Jeopardy Conservation Procedures Announced for 561 NPA (Florida)

561 NPA Split, Creating 772 NPA (Florida)

NPA 772 split from 561

Area code 772 was created in 2002 as a geographic split from area code 561 to serve the Treasure Coast region of Florida. The split was implemented to relieve numbering pool exhaustion caused by rapid population growth and increased cell phone usage.

Ten-digit dialing required in 561 due to 988 designation

A ten-digit dialing requirement was established for area code 561 by October 24, 2021, because the 988 central office code was designated nationwide for the National Suicide Prevention Lifeline, creating a conflict for exchanges that permitted seven-digit dialing.

Overlay of 728 approved for 561

The Florida Public Service Commission approved an all-services overlay for area code 561 on January 4, 2022, authorizing the introduction of area code 728 to serve the same geographic region. This decision was made to address the projected exhaustion of available numbers in the region.

NPA 728 overlay on 561 announced

NPA 728 to Overlay NPA 561 (Florida)

NPA 728 overlays 561

Area code 728 was added as an all-services overlay to area code 561 on March 10, 2023, providing additional numbering resources for Palm Beach County. Both codes now serve the same geographic area, ensuring a continued supply of telephone numbers.