Hamilton County · Ohio
Cincinnati, OH area codes and time zone
Quick answer
Cincinnati is served by area codes 513, 859, keeps EST time (GMT-5), and sits in county FIPS 39061.
- Area codes
- 513 · 859Within 25 miles of the city centre
- Time zone
- ESTAmerica/New_York
- UTC offset
- GMT-5EDT in summer (UTCGMT-4)
- County FIPS
- 39061Hamilton County
Dialling from and to Cincinnati
What this means when you pick up the phone.
Because more than one code covers this area, ten-digit dialling applies for local calls: area code plus number, every time. From abroad, dial +1 then the ten digits.
How Cincinnati came to have several area codes
Why one city can carry several codes.
Area codes are assigned to geography, then exhausted as demand grows. Cincinnati — population about 311k — is covered by codes 513, 859, drawn from within 25 miles of the city centre. Because these 2 codes serve the same footprint, they are overlays: the number pool ran low and a new code was layered on top rather than splitting the city apart. All ten digits are required for every local call.
More Cincinnati data
Other Cincinnati datasets on this site.
- Cincinnati population and income
- Cincinnati sales tax rate
- Cincinnati property tax
- Cincinnati cost of living
- Cincinnati home values and rent
- Cincinnati crime rates
- Cincinnati public schools
- Cincinnati weather normals
- Cincinnati commute times
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