Wellersburg is a borough that is located in Somerset County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania, Metropolitan Statistical Area.
As of the 2020 census, Wellersburg had a population of 214.
Geography
thumb|left|upright|Wellersburg, Somerset County, Pennsylvania, 1860 (note orientation of map: north at bottom)
Wellersburg is located at the extreme southern end of Southampton Township, along its border with Maryland.
Pennsylvania Route 160 passes through Wellersburg as it runs between the Maryland border to the south and Southampton Township to the north.
According to the United States Census Bureau, the borough has a total area of , all land.
Demographics
At the time of the 2000 census, there were 176 people residing in eighty-four households in the borough, including fifty-one families.
The population density was . There were ninety housing units at an average density of .
The racial makeup of the borough was 98.86% White, and 1.14% from two or more races.