Area Code Lookup
What Area Code Is Sterling?
3 area codes serve Sterling
Sterling is served by area codes 815, 907, 970. It spans Illinois and Alaska and Colorado.
Area Codes Serving Sterling
Frequently Asked Questions
What area code is Sterling?
Sterling is served by area codes 815, 907, 970.
Why does Sterling 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). Sterling now has 3 area codes — 815 and 907 and 970 — covering the same or overlapping areas.
How do I call Sterling from outside the US?
To call Sterling from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-815-XXX-XXXX). The +1 is the country code for all NANPA countries.