How many people live in Unicoi County, TN?
Refreshed annually
In 2025, there were about 17,900 people living in Unicoi County, TN. That makes Unicoi County the 74th-most populous county in Tennessee. It is home to 0.24% of people living in the state.
17.9K
population of Unicoi County, TN (2025)
0.24%
County share of the Tennessee population (2025)
About 17,900 people lived in Unicoi County, TN in 2025.
Population estimates, 2000–2025
What are Unicoi County, TN's age demographics?
About 4,400 Unicoi County residents are aged 65 and older in 2024. That represents 24.4% of its population. For comparison, the age group represents 17.7% of Tennessee’s population and 18% in the US overall.
Another 3,200 Unicoi County residents, or 17.7% of the population, were children under 18. For comparison, the age group represents 22% of Tennessee’s population and 21.6% in the US overall.
A higher share of Unicoi County, TN's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Unicoi County, TN's racial and ethnic demographics?
Non-Hispanic white residents make up 90.2% of the Unicoi County, TN population, higher than the national share of 57.5%.
In contrast, Unicoi County’s Hispanic population accounts for 7.2%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.59% 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.
Unicoi County, TN has a higher share of a non-Hispanic white population than Tennessee as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Unicoi County, TN is Erwin with about 6,000 residents in 2024.
Cities and towns in Unicoi County, TN ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Erwin | 6,020 |
| 2. | Unicoi | 3,845 |
| 3. | Balance of Unicoi County | 8,007 |
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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.
