Southwest is located in Westmoreland County, Pennsylvania. Southwest has a 2025 population of 408 . Southwest is currently declining at a rate of -1.21% annually and its population has decreased by -4.45% since the most recent census, which recorded a population of 427 in 2020.
The average household income in Southwest is $83,413 with a poverty rate of 0.74%. The median age in Southwest is 45.9 years: 56.7 years for males, and 38.3 years for females. For every 100 females there are 91.5 males.
Data after 2023 is projected based on recent change
The racial composition of Southwest includes 96.31% White, and smaller percentages for Two or more races, Native American, other race and multiracial populations.
White (96.31%)
Two or more races (2.71%)
Native American (0.49%)
Other race (0.49%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 391 | 96.31% |
| Two or more races | 11 | 2.71% |
| Native American | 2 | 0.49% |
| Other race | 2 | 0.49% |
Married
Widowed
Divorced
Separated
Never Married
Southwest's average per capita income is $38,375. Household income levels show a median of $55,000. The poverty rate stands at 0.74%.
Name | Median | Mean |
|---|---|---|
| Married Families | $67,292 | - |
| Families | $65,208 | $94,430 |
| Households | $55,000 | $83,413 |
| Non Families | $38,250 | $41,679 |
Average Income
Median Household Income
Poverty Rate