Dauphin County's 2026 population is estimated at 297,315, reflecting a 0.73% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dauphin County is the 14th largest county in Pennsylvania. The 2010 population was 268,289 and has grown 10.82% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.4 years
Female: 40.4 years
Male: 38 years
There are 224,875 adults, (52,221 of whom are seniors) in Dauphin County.
Female: 148,133 (51.2%)
Male: 141,460 (48.8%)
The racial composition of Dauphin County includes 63.04% White, 17.22% Black or African American, 6.54% Asian, 4.74% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 182,570 | 63.04% |
| Black or African American | 49,862 | 17.22% |
| Two or more races | 23,616 | 8.15% |
| Asian | 18,938 | 6.54% |
| Other race | 13,718 | 4.74% |
| Native American | 832 | 0.29% |
| Native Hawaiian or Pacific Islander | 57 | 0.02% |
Dauphin County 's average per capita income is $52,275. Household income levels show a median of $76,242. The poverty rate stands at 12.87%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $118,059 | $145,274 |
| Families | $97,550 | $124,259 |
| Households | $76,242 | $101,339 |
| Non Families | $48,171 | $62,176 |
Average Income
Median Household Income
Poverty Rate