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County · Tennessee

Union County

21,064Population
6.4 %Change since 2020
354Net migration
3.7 %Unemployment rate

Facts

Population
21,064 (2024)
Change since 2020
6.4 %
Net migration
354 (2023)
Unemployment rate
3.7 % (2025)
Population base, April 2020
19,802 (2020)
Births
188 (2023)
Births per 1,000 residents, 2023
8.9
Deaths
290 (2023)
Deaths per 1,000 residents, 2023
13.8
Natural change, 2023
-102
International migration
-2 (2023)
Domestic migration
356 (2023)
Net migration per 1,000, 2023
16.8
Postal code
TN
FIPS code
47173

Sources: US Census Bureau — Population Estimates, Bureau of Labor Statistics — LAUS

Unemployment rate, annual average

199020253.75.3
PeriodValue
20253.7 %
20243.5 %
20233.3 %
20223.4 %
20213.8 %
20206.2 %
20193.6 %
20183.6 %
20173.9 %
20165.1 %
20156.7 %
20147.8 %

Population estimates, 2020–2024

2020202421.1K19.8K
PeriodValue
202421,064
202320,747
202220,483
202120,018
202019,845