Marlborough is located in Montgomery County, Pennsylvania. Marlborough has a 2025 population of 3,605 . Marlborough is currently growing at a rate of 0.78% annually and its population has increased by 2.1% since the most recent census, which recorded a population of 3,531 in 2020.
The average household income in Marlborough is $131,625 with a poverty rate of 4.48%. The median age in Marlborough is 47.2 years: 44.7 years for males, and 48.6 years for females. For every 100 females there are 109.2 males.
Data after 2023 is projected based on recent change
The racial composition of Marlborough includes 93.02% White, and smaller percentages for Asian, other race, Black or African American and multiracial populations.
White (93.02%)
Two or more races (4.82%)
Asian (0.88%)
Other race (0.71%)
Black or African American (0.57%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,279 | 93.02% |
| Two or more races | 170 | 4.82% |
| Asian | 31 | 0.88% |
| Other race | 25 | 0.71% |
| Black or African American | 20 | 0.57% |
Married
Widowed
Divorced
Separated
Never Married
Marlborough's average per capita income is $55,625. Household income levels show a median of $113,585. The poverty rate stands at 4.48%.
Name | Median | Mean |
|---|---|---|
| Married Families | $122,679 | - |
| Families | $117,250 | $142,417 |
| Households | $113,585 | $131,625 |
| Non Families | $39,375 | $69,754 |
Average Income
Median Household Income
Poverty Rate