Area Code Lookup
What Area Code Is Rockville?
2 area codes serve Rockville
Rockville is served by area codes 765, 804. It spans Indiana and Virginia.
Area Codes Serving Rockville
Frequently Asked Questions
What area code is Rockville?
Rockville is served by area codes 765, 804.
Why does Rockville 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). Rockville now has 2 area codes — 765 and 804 — covering the same or overlapping areas.
How do I call Rockville from outside the US?
To call Rockville from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-765-XXX-XXXX). The +1 is the country code for all NANPA countries.