Sulphur Springs is a city in and the county seat of Hopkins County, Texas, United States. As of the 2020 census, its population was 15,941. Sul…Sulphur Springs is a city in and the county seat of Hopkins County, Texas, United States. As of the 2020 census, its population was 15,941. Sulphur Springs is located in Northeast Texas. Sulphur Springs was named so because when the area was first settled, springs of sulfurous water were abundant.
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