Oregon rhymes with:
horrigan, barragan, horrigan, barragan, bernhagen, buddenhagen, collagen, ellenbogen, finnegan, flanagan, flannagan, gilligan, gruenhagen, hashagen, horrigan, imogen, kernigan, levenhagen, mcclenaghan, mcgettigan, o'callaghan, ocallaghan, sahagun, steffenhagen, sternhagen, traphagen, verhagen
Oregon sounds like:
oarsman, oregan, oregano, oregonian, organ, organum, orgasm, origin, orkem, orkin, orkney, orrison, orsini, orsino, orson