How many people live in Porter County, IN?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 175,900 people living in Porter County, IN. That makes Porter County the 10th-most populous county in Indiana. It is home to 2.5% of people living in the state.
176K
population of Porter County, IN (2024)
2.5%
County share of the Indiana population (2024)
About 175,900 people lived in Porter County, IN in 2024.
Population estimates, 2000–2024
What are Porter County, IN’s age demographics?
About 34,200 Porter County, IN residents are aged 65 and older in 2024. That represents 19.4% of its population. For comparison, the age group represents 17.5% of Indiana’s population and 18% in the US overall.
Another 36,600 Porter County residents, or 20.8% of the population, were children under 18. For comparison, the age group represents 22.9% of Indiana’s population and 21.6% in the US overall.
A lower share of Porter County, IN's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Porter County, IN’s racial and ethnic demographics?
Non-Hispanic white residents make up 79.6% of the Porter County, IN population, higher than the national share of 57.5%.
In contrast, Porter County’s non-Hispanic Black or African American population accounts for 4.8%, below the 12.6% nationwide, and the Hispanic population makes up 12.3% of the county, compared with 20% 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.
Porter County, IN has a higher share of a non-Hispanic white population than Indiana as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Porter County, IN is Portage with about 38,100 residents in 2024.
Cities and towns in Porter County, IN ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Portage (pt.) | 38,111 |
| 2. | Valparaiso (pt.) | 33,287 |
| 3. | Chesterton (pt.) | 11,649 |
| 4. | Porter | 9,699 |
| 5. | Union | 9,462 |
| 6. | Porter | 5,190 |
| 7. | Hebron | 3,746 |
| 8. | Chesterton (pt.) | 2,870 |
| 9. | Burns Harbor | 2,147 |
| 10. | Kouts | 2,058 |
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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.
