Southwest Sandhill is an unincorporated area and census-designated place (CDP) in Ward County, Texas, United States. It was first listed as a CDP prior to the 2020 census. As of the 2020 census, Southwest Sandhill had a population of 1,666.
It is in the northeastern part of the county, bordered to the north by Thorntonville and Monahans. Interstate 20 passes through the northern part of the CDP, leading northeast to Odessa and west-southwest to Pecos. Texas State Highway 18 runs along the eastern side of the CDP, leading north through Monahans to Kermit and south to Fort Stockton .
Southwest Sandhill first appeared as a census designated place in the 2020 U.S. census.
As of the 2020 United States census, there were 1,666 people, 388 households, and 231 families residing in the CDP.