Area Code Lookup
What Area Code Is Ladue?
2 area codes serve Ladue · Missouri
Ladue is served by area codes 314, 557. It is located in Missouri.
Area Codes Serving Ladue
Frequently Asked Questions
What area code is Ladue?
Ladue is served by area codes 314, 557. It is located in Missouri.
Why does Ladue 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). Ladue now has 2 area codes — 314 and 557 — covering the same or overlapping areas.
How do I call Ladue from outside the US?
To call Ladue from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-314-XXX-XXXX). The +1 is the country code for all NANPA countries.