Dyer County is located in the northwest region of Tennessee, bordered by the Mississippi River to the west. The county seat is Dyersburg, which serves as the largest city in the area. Dyer County is known for its agricultural activities, with crops like cotton and soybeans being significant to the local economy. The county was established in 1823 and named after John Dyer, a prominent figure in the early history of the region. Dyer County features several parks and recreational areas, providing opportunities for outdoor activities such as fishing, hiking, and camping, making it a pleasant place for residents and visitors alike.