15 area codes assigned to Ohio · Eastern Time
5 of Ohio'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.
The remaining 5 codes cover their own area: 216, 283, 436, 440, 513.
Ohio went from 4 area codes in 1947 to 15 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.
Ohio spans 9 LATAs — the regions a call is routed within before it becomes long-haul.
216
Ohio
Eastern Time
4,124 blocks · 4 rate centres
220
Ohio
Eastern Time
Overlay · with 740
1,202 blocks · 77 rate centres
234
Ohio
Eastern Time
Overlay · with 330
3,738 blocks · 110 rate centres
283
Ohio
Eastern Time
423 blocks · 22 rate centres
326
Ohio
Eastern Time
Overlay · with 937
668 blocks · 56 rate centres
330
Ohio
Eastern Time
Overlay · with 234
5,211 blocks · 117 rate centres
380
Ohio
Eastern Time
Overlay · with 614
1,437 blocks · 16 rate centres
419
Ohio
Eastern Time
Overlay · with 567
5,011 blocks · 205 rate centres
436
Ohio
Eastern Time
0 blocks · 0 rate centres
440
Ohio
Eastern Time
5,965 blocks · 62 rate centres
513
Ohio
Eastern Time
5,301 blocks · 25 rate centres
567
Ohio
Eastern Time
Overlay · with 419
3,613 blocks · 156 rate centres
614
Ohio
Eastern Time
Overlay · with 380
5,580 blocks · 16 rate centres
740
Ohio
Eastern Time
Overlay · with 220
6,626 blocks · 187 rate centres
937
Ohio
Eastern Time
Overlay · with 326
5,715 blocks · 123 rate centres
Ohio has more than one area code in most regions. Enter a city to see which codes serve it, or check a specific number instead.
Ohio has had 10 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.
Ohio is served by 15 area codes in the North American Numbering Plan (NANP): 216, 220, 234, 283, 326, 330, 380, 419, 436, 440, 513, 567, 614, 740, 937. All Ohio 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.