| Official Name: | Wellersburg, Pennsylvania |
| Settlement Type: | Borough |
| Pushpin Map: | Pennsylvania |
| Pushpin Label: | Wellersburg |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Somerset |
| Government Type: | Borough Council |
| Leader Title: | Mayor |
| Established Title: | Settled |
| Established Date: | 1830 |
| Established Title1: | Incorporated |
| Established Date1: | 1857 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.10 |
| Area Land Km2: | 2.10 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.81 |
| Area Land Sq Mi: | 0.81 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 210 |
| Population Density Km2: | 81.49 |
| Population Density Sq Mi: | 211.11 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 39.7306°N -78.8481°W |
| Elevation Ft: | 1348 |
| Postal Code Type: | Zip code |
| Postal Code: | 15564 |
| Area Code: | 814 |
| Pop Est As Of: | 2021 |
| Population Est: | 208 |
| Blank Name: | FIPS code |
| Blank Info: | 42-82128 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1215601 |
Wellersburg is a borough that is located in Somerset County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania, Metropolitan Statistical Area.
The population was 181 at the time of 2010 census.
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 0.8sqmi, all land.
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 223.4sp=usNaNsp=us. There were ninety housing units at an average density of 114.2sp=usNaNsp=us.
The racial makeup of the borough was 98.86% White, and 1.14% from two or more races.
Of the eighty-four households that were documented during the census, 15.5% had children who were under the age of eighteen living with them, 45.2% were married couples living together, 10.7% had a female householder with no husband present, and 38.1% were non-families. Additionally, 36.9% of households were one-person and 17.9% were one-person households with someone living alone who was aged sixty-five or older.
The average household size was 2.10 and the average family size was 2.63.
The age distribution of residents was 15.9% who were under the age of eighteen, 6.8% who were aged eighteen to twenty-four, 28.4% who were aged twenty-five to forty-four, 27.3% who were aged forty-five to sixty-four, and 21.6% who were aged sixty-five or older. The median age was forty-four years.
For every one hundred females, there were 83.3 males. For every one hundred females who were aged eighteen or older, there were 87.3 males.
The median household income was $21,111 and the median family income was $23,750. Males had a median income of $24,688 compared with that of $18,750 for females.
The per capita income for the borough was $14,495.
Approximately 4.3% of families and 5.4% of the population were living below the poverty line, including those who were aged sixty-five or older. No one under the age of eighteen was reported as living in poverty.