The Caldwell County community is underlaid by a solid infrastructure. Princeton residents benefit from municipal electric, water and wastewater service, through the Princeton Electric Plant Board and the Princeton Water and Wastewater Commission. Atmos Energy supplies and maintains natural gas service throughout the city. Kenergy, Kentucky Utilities, the

Pennyrile Rural Electric Cooperative, the Fortner Gas Company and the Caldwell County Water District maintain similar services in the county's rural areas.