2 area codes assigned to District of Columbia · Eastern Time
1 of District of Columbia's area codes share territory with another. Codes in the same row serve the same places, so either can reach a number there — and ten-digit dialling is required throughout.
District of Columbia went from one area code in 1947 to 2 today. A split carves territory off its parent; an overlay sits on top of it, which is why newer codes need ten-digit dialling.
Dates from the NANPA area code report, 09/19/2026.
District of Columbia spans 1 LATA — the regions a call is routed within before it becomes long-haul.
202
District of Columbia
Eastern Time
Overlay · with 771
5,206 blocks · 1 rate centre
771
District of Columbia
Eastern Time
Overlay · with 202
770 blocks · 1 rate centre
District of Columbia has more than one area code in most regions. Enter a city to see which codes serve it, or check a specific number instead.
District of Columbia has had 2 area codes activated as an overlay since 2021, sharing territory with an existing code rather than carving out new geography. Local calls in an overlaid region must be dialed with all ten digits. Earlier overlays are not listed here.
See every North American overlayDistrict of Columbia is served by 2 area codes in the North American Numbering Plan (NANP): 202, 771. All District of Columbia numbers are in the Eastern Time zone. Click any area code above to see the cities and rate centers it covers, formatted tel: link examples, and to search for available phone numbers.