
Gilmer
- County:
- Upshur County
- County Seat:
- Yes
- Area (mi²):
- 3.79
- State:
- Texas
Gilmer is a city located in Upshur County, Texas. Gilmer has a 2025 population of 5,262. It is also the county seat of Upshur County. Gilmer is currently growing at a rate of 1.56% annually and its population has increased by 8.36% since the most recent census, which recorded a population of 4,856 in 2020.
The average household income in Gilmer is $62,677 with a poverty rate of 22.9%. The median age in Gilmer is 38.5 years: 37.3 years for males, and 41.5 years for females.