On 314 Day, locals celebrate everything that makes the St. Louis region unique. Why 314? It's the area code that symbolizes ...

Making the correlation between the city’s 314 area code and the date March 14, Evans partnered with Tatum to produce annual 314 Day celebrations and start the 314 Day Foundation. The holiday has ...

In addition to 314 representing the common St. Louis area code, the numbers also represent the first three numbers in the value of “Pi,” further leading to some deals on pizzas around the area.