Area Code Lookup
What Area Code Is Lake Forest?
2 area codes serve Lake Forest · Illinois
Lake Forest is served by area codes 224, 847. It is located in Illinois.
Area Codes Serving Lake Forest
Frequently Asked Questions
What area code is Lake Forest?
Lake Forest is served by area codes 224, 847. It is located in Illinois.
Why does Lake Forest 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). Lake Forest now has 2 area codes — 224 and 847 — covering the same or overlapping areas.
How do I call Lake Forest from outside the US?
To call Lake Forest from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-224-XXX-XXXX). The +1 is the country code for all NANPA countries.