─────── § 04. NPA RECORD · 507 · FOLIO 0309 OF 0801 ──────────────
507
United States NPA Record
Area code for the southern fifth of Minnesota, created in 1954 from parts of 218 and 612.
Area code for the southern fifth of Minnesota, created in 1954 from parts of 218 and 612. It covers cities including Rochester, Mankato, and Worthington.
IN SERVICEFirst record · 1954
§ 04.05Event Summary
split · 2activated · 1boundary change · 1jeopardy · 1mandatory dialing · 1relief planned · 1
§ 04.06
Documentary Record · 9 events
CHRONOLOGICAL ORDER
1954-01-01
boundary change
Minnesota area code boundaries redrawn
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1954-01-01
split
Creation of area code 507 from parts of 612 and 218
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1996-03-17
split
Exchanges moved from 612/320 to 507
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2022-08-01
jeopardy
Exhaust forecast for NPA 507
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2023-03-30
relief planned
Area code 924 approved as overlay for 507
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2023-06-12
NPA 924 overlay on 507 announced
NPA 924 to Overlay NPA 507 (Minnesota)
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2024-07-01
mandatory dialing
Ten-digit dialing required for 507/924 overlay complex
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2024-08-30
Area code 924 activated as overlay for 507
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2024-08-30
activated
NPA 924 activated as overlay to 507
Area code 924 became assignable and active as an overlay to area code 507 on August 30, 2024, marking the first overlay in Minnesota.
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