Jefferson county (IL) ⬤ public State: Illinois (state of the USA) Jefferson county (IL) Child topics: Nason - ILIna - ILBonnie - ILOpdyke - ILWoodlawn - ILDix - ILBluford - ILBelle Rive - ILWaltonville - ILMount Vernon - IL Parent topics: Illinois (state of the USA)