There are currently 10 area codes in Ohio. When Ohio needs more area codes they will introduce an eleventh area code for the Columbus/Central Ohio area and a twelfth area code for the Cincinnati region.
Defiance, Ohio, is in area codes 419 and 567 (overlay).
Ohio, along with the rest of the contiguous United States and most of Canada, began using area codes in 1947.Ohio originally had four area codes:216 for Cleveland and northeastern Ohio (now 216, 234, 330, and 440)419 for Toledo and northwestern Ohio (now 419 and 567)513 for Cincinnati and southwestern Ohio (now 513 and 937)614 for Columbus and southeastern Ohio (now 614 and 740)
The zip codes for Parma Heights Ohio are usually using the range OH44130. This seems to cover that area and nowhere else, so should be what is needed.
The area codes for Ohio are 216, 234, 283, 330, 380, 419, 440, 513, 567, 614, 740, and 937.Ohio has multiple area codes:216: Cleveland330 & 234: Akron, Canton, Youngstown419 & 567: Toledo440: Ahstabula, Lorain513: Cincinnati614: Columbus740 & 220: Marion, Zanesville (220 overlay in 2015)937: DaytonThe telephone country code for the USA (plus Canada and 18 Caribbean-ish islands) is +1.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but Japan uses 010, Australia uses 0011, and many other countries use different prefixes.).
Area code 937 is in southwestern Ohio, including Dayton but not including Cincinnati. There are no publicly available statistics on the population of a specific telephone area code. Ohio has 11.5 million people and 10 area codes, so on average a little over a million people per area code.
six area codes: 928 602 623 480 520
There are 64 ZIP codes for Franklin county in Ohio.
26
about 23
There are about 300 area codes in the United States, about 30 in Canada, and about 20 in other miscellaneous islands in or near the Caribbean that share country code +1 with the US and Canada. There are about 400 area codes in Mexico. There are about 600 area codes in the UK. There are about 5,200 area codes in Germany.
There are many area code listings on the internet.
Each municipality (city) in Ohio either has it's own traffic penalty codes or uses the Ohio Revised Codes.