How many people live in Dauphin County, PA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 293,000 people living in Dauphin County, PA. That makes Dauphin County the 14th-most populous county in Pennsylvania. It is home to 2.2% of people living in the state.
293K
population of Dauphin County, PA (2024)
2.2%
County share of the Pennsylvania population (2024)
About 293,000 people lived in Dauphin County, PA in 2024.
Population estimates, 2000–2024
What are Dauphin County, PA’s age demographics?
About 55,000 Dauphin County residents are aged 65 and older in 2024. That represents 18.8% of its population. For comparison, the age group represents 20.4% of Pennsylvania’s population and 18% in the US overall.
Another 64,600 Dauphin County residents, or 22% of the population, were children under 18. For comparison, the age group represents 20.1% of Pennsylvania’s population and 21.6% in the US overall.
A lower share of Dauphin County, PA's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Dauphin County, PA’s racial and ethnic demographics?
Non-Hispanic white residents make up 59.9% of the Dauphin County, PA population, higher than the national share of 57.5%. Dauphin County, PA also has a larger share of people identifying as non-Hispanic Black or African American (16.7%) than the US overall (12.6%).
In contrast, Dauphin County’s Hispanic population accounts for 12.7%, below the 20% nationwide, and the non-Hispanic American Indian and Alaska Native population makes up 0.16% of the county, compared with 0.72% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Dauphin County, PA has a higher share of a non-Hispanic Black or African American population than Pennsylvania as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Dauphin County, PA is Lower Paxton with about 55,500 residents in 2024.
Cities and towns in Dauphin County, PA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Lower Paxton | 55,465 |
| 2. | Harrisburg | 50,649 |
| 3. | Susquehanna | 28,214 |
| 4. | Swatara | 28,006 |
| 5. | Derry | 25,181 |
| 6. | West Hanover | 11,366 |
| 7. | Lower Swatara | 10,008 |
| 8. | Middletown borough | 9,748 |
| 9. | South Hanover | 7,368 |
| 10. | Steelton borough | 6,358 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
