Oklahoma County · Oklahoma
Oklahoma City, OK area codes and time zone
Quick answer
Oklahoma City is served by area code 405, keeps CST time (GMT-6), and sits in county FIPS 40109.
- Area code
- 405Within 25 miles of the city centre
- Time zone
- CSTAmerica/Chicago
- UTC offset
- GMT-6CDT in summer (UTCGMT-5)
- County FIPS
- 40109Oklahoma County
Dialling from and to Oklahoma City
What this means when you pick up the phone.
Local calls inside 405 may still work on seven digits, but ten-digit dialling is the safe default everywhere in the country now. From abroad, dial +1 then the ten digits.
How Oklahoma City came to have one area code
Why one city can carry several codes.
Area codes are assigned to geography, then exhausted as demand grows. Oklahoma City — population about 703k — is covered by code 405, drawn from within 25 miles of the city centre. A single code still has enough numbers for the area, so no overlay has been needed yet. When growth exhausts it, regulators will layer on a new code and local calls will move to ten digits.
More Oklahoma City data
Other Oklahoma City datasets on this site.
- Oklahoma City population and income
- Oklahoma City sales tax rate
- Oklahoma City property tax
- Oklahoma City cost of living
- Oklahoma City home values and rent
- Oklahoma City crime rates
- Oklahoma City public schools
- Oklahoma City weather normals
- Oklahoma City commute times
Statewide: Oklahoma cities · Oklahoma ZIP codes · Oklahoma sales tax · Oklahoma counties