How many people live in Cumberland County, PA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 275,500 people living in Cumberland County, PA. That makes Cumberland County the 15th-most populous county in Pennsylvania. It is home to 2.1% of people living in the state.
276K
population of Cumberland County, PA (2024)
2.1%
County share of the Pennsylvania population (2024)
About 275,500 people lived in Cumberland County, PA in 2024.
Population estimates, 2000–2024
What are Cumberland County, PA’s age demographics?
About 54,000 Cumberland County, PA residents are aged 65 and older in 2024. That represents 19.6% of its population. For comparison, the age group represents 20.4% of Pennsylvania’s population and 18% in the US overall.
Another 56,000 Cumberland County residents, or 20.3% 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 higher share of Cumberland County, PA's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Cumberland County, PA’s racial and ethnic demographics?
Non-Hispanic white residents make up 79.2% of the Cumberland County, PA population, higher than the national share of 57.5%. Cumberland County, PA also has a larger share of people identifying as non-Hispanic Asian (7.5%) than the US overall (6.5%).
In contrast, Cumberland County’s Hispanic population accounts for 5.6%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 5.1% of the county, compared with 12.6% 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.
Cumberland County, PA has a higher share of a non-Hispanic white population than Pennsylvania as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Cumberland County, PA is Hampden with about 35,500 residents in 2024.
Cities and towns in Cumberland County, PA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Hampden | 35,474 |
| 2. | Upper Allen | 24,474 |
| 3. | Carlisle borough | 22,517 |
| 4. | East Pennsboro | 21,490 |
| 5. | Silver Spring | 21,465 |
| 6. | Lower Allen | 20,873 |
| 7. | South Middleton | 17,562 |
| 8. | North Middleton | 12,843 |
| 9. | Mechanicsburg borough | 10,085 |
| 10. | Southampton | 8,341 |
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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.
