Marion County · Indiana
Indianapolis, IN area codes and time zone
Quick answer
Indianapolis is served by area code 317, keeps EST time (GMT-5), and sits in county FIPS 18097.
- Area code
- 317Within 25 miles of the city centre
- Time zone
- ESTAmerica/Indiana/Indianapolis
- UTC offset
- GMT-5EDT in summer (UTCGMT-4)
- County FIPS
- 18097Marion County
Dialling from and to Indianapolis
What this means when you pick up the phone.
Local calls inside 317 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 Indianapolis came to have one area code
Why one city can carry several codes.
Area codes are assigned to geography, then exhausted as demand grows. Indianapolis — population about 879k — is covered by code 317, 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 Indianapolis data
Other Indianapolis datasets on this site.
- Indianapolis population and income
- Indianapolis sales tax rate
- Indianapolis property tax
- Indianapolis cost of living
- Indianapolis home values and rent
- Indianapolis crime rates
- Indianapolis public schools
- Indianapolis weather normals
- Indianapolis commute times
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