How many people live in Morgan County, IN?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 73,800 people living in Morgan County, IN. That makes Morgan County the 24th-most populous county in Indiana. It is home to 1.1% of people living in the state.
73.8K
population of Morgan County, IN (2024)
1.1%
County share of the Indiana population (2024)
About 73,800 people lived in Morgan County, IN in 2024.
Population estimates, 2000–2024
What are Morgan County, IN’s age demographics?
Understanding the age demographics of Morgan County, IN is necessary for planning and resource allocation. The population distribution in Morgan County shows a diverse age range. Comparing these demographics to state averages reveals unique characteristics of the county. Over time, trends in age distribution can indicate shifts in population dynamics. These changes have implications for economic development, healthcare services, and educational planning in Morgan County. By analyzing these demographics, stakeholders can make informed decisions to better serve the community.About 14,100 Morgan County residents are aged 65 and older in 2024. That represents 19.1% of its population. For comparison, the age group represents 17.5% of Indiana’s population and 18% in the US overall.
Another 16,000 Morgan County, IN residents, or 21.6% 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 higher share of Morgan County, IN's population is aged 45–64 than the US as a whole.
Population estimates by age group, (2024)
What are Morgan County, IN’s racial and ethnic demographics?
Non-Hispanic white residents make up 93.3% of the Morgan County, IN population, higher than the national share of 57.5%.
In contrast, Morgan County’s Hispanic population accounts for 2.5%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 1.8% 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.
Morgan 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 Morgan County, IN is Martinsville with about 12,000 residents in 2024.
Cities and towns in Morgan County, IN ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Martinsville | 11,952 |
| 2. | Mooresville (pt.) | 10,027 |
| 3. | Green | 3,667 |
| 4. | Jefferson | 3,642 |
| 5. | Gregg | 3,006 |
| 6. | Monrovia | 2,322 |
| 7. | Ashland | 1,812 |
| 8. | Harrison | 1,559 |
| 9. | Brooklyn (pt.) | 1,487 |
| 10. | Adams | 1,234 |
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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.
