What is 820 area code?

The 820 area code is an overlay for the 940 area code in Texas. It was created to provide additional phone number options for customers in the region. The overlay plan was implemented in 2014 to keep up with the increasing demand for phone numbers due to population growth and the proliferation of mobile devices. Callers in the 820 area code region must now dial the full ten-digit phone number (area code + phone number) for all calls, even within the same area code. This change was made to ensure a continuing supply of telephone numbers in the area without having to split the region into different area codes.