Your mailing address number is the numeric portion of the address your bill gets mailed to. Fractions (like 1/2) are not included.
Most often, this is your house number. However, if your bill is mailed to a Post Office Box, it will be your Post Office Box number.
Here are some examples:
©2012 Taunton Municipal Lighting Plant 33 Weir St. Taunton, MA 02780 PH: 508-824-5844