Area Code Lookup
What Area Code Is Downers Grove?
2 area codes serve Downers Grove · Illinois
Downers Grove is served by area codes 331, 630. It is located in Illinois.
Area Codes Serving Downers Grove
Frequently Asked Questions
What area code is Downers Grove?
Downers Grove is served by area codes 331, 630. It is located in Illinois.
Why does Downers Grove 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). Downers Grove now has 2 area codes — 331 and 630 — covering the same or overlapping areas.
How do I call Downers Grove from outside the US?
To call Downers Grove from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-331-XXX-XXXX). The +1 is the country code for all NANPA countries.