South Middleton is located in Cumberland County, Pennsylvania. South Middleton has a 2025 population of 18,257 . South Middleton is currently growing at a rate of 3.96% annually and its population has increased by 12.89% since the most recent census, which recorded a population of 16,172 in 2020.
The average household income in South Middleton is $109,404 with a poverty rate of 7.1%. The median age in South Middleton is 45.6 years: 44.1 years for males, and 46.7 years for females. For every 100 females there are 100.7 males.
Data after 2023 is projected based on recent change
The racial composition of South Middleton includes 92.03% White, and smaller percentages for Two or more races, Asian, other race, Black or African American and multiracial populations.
White (92.03%)
Two or more races (2.76%)
Asian (2.46%)
Other race (2.08%)
Black or African American (0.68%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 15,098 | 92.03% |
| Two or more races | 452 | 2.76% |
| Asian | 403 | 2.46% |
| Other race | 342 | 2.08% |
| Black or African American | 111 | 0.68% |
Married
Widowed
Divorced
Separated
Never Married
South Middleton's average per capita income is $59,544. Household income levels show a median of $93,605. The poverty rate stands at 7.1%.
Name | Median | Mean |
|---|---|---|
| Married Families | $125,737 | - |
| Families | $108,261 | $123,287 |
| Households | $93,605 | $109,404 |
| Non Families | $59,298 | $69,784 |
Average Income
Median Household Income
Poverty Rate