Newest area codes
New codes are almost always overlays: a second code laid over an existing area once the first runs out of prefixes. Wherever one is introduced, ten-digit dialling becomes mandatory for local calls.
Recently activated
| Code | Serves | Overlay of | In service |
|---|---|---|---|
| 350 | Stockton, CA | 209 | 2024 |
| 738 | Los Angeles, CA | 213/323 | 2024 |
| 943 | Atlanta, GA | 404 | 2023 |
| 983 | Denver, CO | 303 | 2022 |
| 445 | Philadelphia, PA | 215 | 2021 |
| 572 | Oklahoma City, OK | 405 | 2021 |
| 771 | Washington, DC | 202 | 2021 |
| 938 | Huntsville, AL | 256 | 2021 |
| 945 | Dallas, TX | 214 | 2021 |
| 820 | Oxnard, CA | 805 | 2020 |
| 839 | Columbia, SC | 803 | 2020 |
| 840 | San Bernardino, CA | 909 | 2020 |
350Stockton, CA · overlay of 2092024
738Los Angeles, CA · overlay of 213/3232024
943Atlanta, GA · overlay of 4042023
983Denver, CO · overlay of 3032022
445Philadelphia, PA · overlay of 2152021
572Oklahoma City, OK · overlay of 4052021
771Washington, DC · overlay of 2022021
938Huntsville, AL · overlay of 2562021
945Dallas, TX · overlay of 2142021
820Oxnard, CA · overlay of 8052020
839Columbia, SC · overlay of 8032020
840San Bernardino, CA · overlay of 9092020
Upcoming
Announced by NANPA but not yet in service. These have no page until they activate.
| Code | Will serve | Overlay of | Expected |
|---|---|---|---|
| 369 | Vallejo, CA | 707 | 2026 |
| 624 | Long Island, NY | 516 | 2026 |
| 645 | Miami, FL | 305/786 | 2027 |
369Vallejo, CA · overlay of 707expected 2026
624Long Island, NY · overlay of 516expected 2026
645Miami, FL · overlay of 305/786expected 2027