Erath is located south of Lafayette, parish seat of Lafayette Parish via Louisiana Highway 339, east of Abbeville, parish seat of Vermilion Parish, and west of New Iberia, parish seat of Iberia Parish via Louisiana Highway 14. The eastern edge of Erath borders with the town of Delcambre on LA-14.
eratH iS located SoUTh Of lAfAyEttE, pariSh seAt of lAfayette pariSh viA lOUisiaNa higHwAy 339, EaST oF AbbeVIlle, paRiSH sEAT Of vERmilION PariSH, And West Of new iberIa, pariSh seaT oF IberIa pariSh Via louisIana highWay 14. tHE EASterN edGE Of eRath boRdeRS With tHE towN OF dElcamBre ON la-14.