U.S. Federal Route 62 runs east-west across Central Caldwell County. It runs from from the Caldwell/Lyon County Line, near Eddyville, to the Caldwell/Hopkins County Line, near Dawson Springs. U.S. Rt. 62 passes through the following town in Caldwell County. Princeton
Kentucky Secondary State Route 3314, near Princeton. Kentucky Secondary State Route 1627, near Princeton. Kentucky State Route 672, near Dawson Springs.
Branches of U.S. Rt. 62 in Caldwell County. A junction marker on SB KY St Rt 91/139. EB U.S. Rt. 62; SB KY St Rt 91/139 south of Seminary in Princeton. EB U.S. Rt. 62; SB KY St Rt 91; NB KY St Rt 139/239 on the southeast side of the courthouse square in Princeton. A guide marker on EB U.S. Rt. 62; NB KY St Rt 91/139/239. EB U.S> Rt. 62/NB KY St Rt 293 east of the courthouse square in Princeton. EB U.S. Rt. 62/NB KY St Rt 293 at north KY St Rt 293.