Area Code Lookup
What Area Code Is Marietta?
2 area codes serve Marietta
Marietta is served by area codes 580, 740. It spans Oklahoma and Ohio.
Area Codes Serving Marietta
Frequently Asked Questions
What area code is Marietta?
Marietta is served by area codes 580, 740.
Why does Marietta have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). Marietta now has 2 area codes — 580 and 740 — covering the same or overlapping areas.
How do I call Marietta from outside the US?
To call Marietta from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-580-XXX-XXXX). The +1 is the country code for all NANPA countries.