Whilst our numbers are around 10% of the population, i'd hazard a guess that 2000+ don't live in Kilmarnock.
Alot of Killie fans in place like Stewarton, Kilmaurs, Irvine, Kilwinning, Saltcoats, Ardrossan, Troon, Prestwick etc
Not to mention those who now live in Glasgow. Plenty on the trains down each match day.