Gilmer is a city located in Upshur County Texas. It is also the county seat of Upshur County. With a 2020 population of 5,229, it is the 354th largest city in Texas and the 4652nd largest city in the United States . Gilmer is currently growing at a rate of 0.83% annually and its population has increased by 6.61% since the most recent census, which recorded a population of 4,905 in 2010. Gilmer reached it's highest population of 5,229 in 2021. Spanning over 4 miles, Gilmer has a population density of 1,380 people per square mile.
The average household income in Gilmer is $51,791 with a poverty rate of 22.01%. The median rental costs in recent years comes to $679 per month, and the median house value is $118,400. The median age in Gilmer is 36.5 years, 30.7 years for males, and 43.5 years for females.