Cumby is a city in Hopkins County, in Northeast Texas, situated along Interstate 30 about 70 miles east-northeast of Dallas. Its population was 681 at the 2020 census, and the town sits at the highest elevation point in the county, on the rolling terrain between the Dallas–Fort Worth metroplex and the Piney Woods. Originally known as Black Jack Grove for the blackjack oak trees that covered the area, the community was later renamed Cumby, and its position on the interstate has made it a familiar waypoint for travelers across North Texas. Cumby remains a small, rural community whose scale and pace reflect its agricultural roots. The town's economy leans on the surrounding farming and ranching country, along with local businesses and the convenience of its interstate frontage, which brings traffic and services through the area. Residents value the combination of small-town living and the quick highway access that puts Dallas and the larger cities of the region within easy reach. Public education is provided by Cumby Independent School District, a small 1A district serving students from pre-kindergarten through high school in a close-knit, rural setting. The town's modest size means most specialized shopping and services are found in nearby Sulphur Springs, the Hopkins County seat, or farther west toward the metroplex. Homes in the area are predominantly established single-family houses on town and country lots, with open farmland surrounding the community. The town's quiet neighborhoods and rural surroundings give it a distinctly unhurried character even as the interstate hums nearby, and that balance of country living and highway convenience defines everyday life in Cumby.