The 2003 Football Fans Census revealed that Colchester United fans considered Wycombe Wanderers to be their primary rival, with both Wycombe and Southend United considering the U's to be their primary rival. Colchester fans considered Ipswich Town to be their secondary rivals, with Southend only third. Cambridge United additionally considered Colchester to be their tertiary rivals. However, in the 2012–13 census, Colchester fans changed their chief rivals from Wycombe to Southend, with Wycombe falling to second and Ipswich to third. Ipswich Town fans also named Colchester United as their third rivals after Norwich City and West Ham United. The U's remained primary choice for both Southend and Wycombe fans. United were also ranked as the 12th least offensive club to the supporters of all other Football League clubs.