The following neighborhood associations (NA) in Salem, OR are allowed to exist and are linked off of the Salem, OR page. 

 Lansing (http://en.wikipedia.org/wiki/Lansing,_Salem,_Oregon) 
 Northgate (http://en.wikipedia.org/wiki/Northgate,_Salem,_Oregon) 
 North Lancaster (http://en.wikipedia.org/wiki/North_Lancaster,_Salem,_Oregon) 
 South Central (http://en.wikipedia.org/wiki/South_Central,_Salem,_Oregon) 

 The South Gateway NA represents over 13,000 residents and has been around for over 35 years. Those facts alone seem to make it "worthy of notice" on Wikipedia. 

 What must I provide to prove that it meets the notability requirement?