The gang, from Bradford in West Yorkshire, were sentenced at Leeds Crown Court after pleading guilty at earlier hearings.
The EDL staged a demonstration in Cleckheaton in West Yorkshire on March 17 last year.
Afterwards members of the gang were said to have been involved in a series of incidents including racist abuse and a violent attack on an Asian man.
Judge Scott Wolstenholme said the offences involved "sustained and unprovoked racial violence by a group acting together in a crowded town centre."
Robert Collington, 27, Kevin Docherty, 39, Mark Peel, 34, David Lawler, 30, Steven Philip Woodhead, 33 were jailed.
Ben Phelps, 19, was sentenced to 10 months in a young offenders' institution while Bradley Allsop, 17, was handed a 12 month youth rehabilitation order and 120 hours unpaid work.
They were also banned from attending EDL demonstrations for five years.