Jayton, Texas as seen facing south outside the Kent County Library. – CletusDitto, CC BY-SA 3.0 – Wikimedia Commons Jayton is located in Kent County. About 511 people live here (as of 2020). Between 2010 and 2020, the population declined from 534 to 511. The region is at 611 meters above sea level. The area covers about 4.4 square kilometers. There are about 58 streets in Jayton. The postal codes are 79528. The dialing code is 806. Jayton is city in and the county seat of Kent County, Texas, United States.