In 2002, Killererin made an early exit from the County Championship, controversially for the nonplaying of extra time against An Cearthrú Rua. In 2003, Killererin were back in the County Final, albeit well beaten at the final whistle by Caltra, who
went on to win the All Ireland Club Championship. The team regrouped in 2004 following the devastating defeat of the previous year and under the new team management of Billy Joyce, went on to win their fourth Senior County Championship by beating Salthill/Knocknacarra 1-10 to 0-10. In 2007, under the management of Stephen Flaherty, Killererin won it's fifth senior Championship Title, when they defeated Milltown in the County Final. Also in 2007, Killererin won it's first ever U21 A County Championship Title when they beat Clonbur in the County Final under the management of John Hughes, Murt Dunleavy and Padraic Joyce.

In 2010 Killererin won it's sixth senior championship title when they defeated
Corofin in the county final. 1-10 to 1-7 under the management of Tommie Joyce,
Stephen Flaherty and Murt Dunleavy. They faced St Brigid's of Roscommon in the
Connacht club final but were cruelly beaten in extra time.

The Club is very proud of the many players that have represented us at County level down through the years. Names like Tommie Hughes, who played on the 1934, All Ireland winning team, Billy Joyce, Seamus Burke, Morgan Hughes, Jarlath Burke, Tom
Mc Hugh, Jimmy Murphy, Tommy Wilson, John Wilson, Alan Keane, Tommie Joyce and Nicky Joyce are all personalities from the past that played for the County. Presently Padraic Joyce, Tomas Fahy, Colin Forde and Michael Boyle are all doing us proud at county level. Tomas Fahy and Colin Forde are both All Ireland minor championship medal winners following the success of Galway in 2007.In 2010 Adrian Nolan a young player from the club captained the county Ted Webb team to victory along fellow club player Shane Fahy

Earlier this year Colin Forde captained the county's U21 team to All Ireland
Championship success along side club players Tomas Fahy and Michael Boyle.
Adrian Nolan is currently on the county's minor football panal whick is managed by
Killererin's Tommie Joyce.