St. Clairsville is a city located in Belmont County, Ohio. St. Clairsville has a 2025 population of 4,924 . It is also the county seat of Belmont County . St. Clairsville is currently declining at a rate of -0.61% annually and its population has decreased by -2.96% since the most recent census, which recorded a population of 5,074 in 2020.
The average household income in St. Clairsville is $93,039 with a poverty rate of 8.29%. The median age in St. Clairsville is 48 years: 34.7 years for males, and 58.5 years for females. For every 100 females there are 104.2 males.
Data after 2023 is projected based on recent change
The racial composition of St. Clairsville includes 87.05% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.
White (87.05%)
Two or more races (8.45%)
Other race (2.12%)
Black or African American (1.98%)
Asian (0.4%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,390 | 87.05% |
| Two or more races | 426 | 8.45% |
| Other race | 107 | 2.12% |
| Black or African American | 100 | 1.98% |
| Asian | 20 | 0.4% |
Married
Widowed
Divorced
Separated
Never Married
St. Clairsville's average per capita income is $43,281. Household income levels show a median of $73,534. The poverty rate stands at 8.29%.
Name | Median | Mean |
|---|---|---|
| Married Families | $114,279 | - |
| Families | $106,129 | $119,157 |
| Households | $73,534 | $93,039 |
| Non Families | $42,500 | $50,279 |
Average Income
Median Household Income
Poverty Rate