The districts are named by their number only. However, during the redistricting process they were "unofficially" referred to by the following territorial names:
 
District 1 - S. Bellingham                       District 4 - Farmlands
District 2 - N. Bellingham                       District 5 - Coastal
District 3 - Foothills                               Council At-Large A and Council At-Large B

See old district map (2011).