Colossae

or Colosse, a city of Phrygia, on the Lycus, which is a tributary of the Maeander. It was about 12 miles above Laodicea, and near the great road from Ephesus to the Euphrates, and was consequently of some mercantile importance. It does not appear that Paul had visited this city when he wrote his letter to the church there (Col 1:2). He expresses in his letter to Philemon (Phil 1:22) his hope to visit it on being delivered from his imprisonment. From (Col 1:7; 4:12) it has been concluded that Epaphras was the founder of the Colossian church. This town afterwards fell into decay, and the modern town of Chonas or Chonum occupies a site near its ruins.

EBD - Easton's Bible Dictionary