Tennessee

Union

19,802
2020 population
1860
first census record
17
census records

About Union

Union, Tennessee, first appears in the United States federal census in 1860, when it recorded a population of 6,117. At the most recent census, in 2020, its population stood at 19,802.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 2 documented military engagements have been recorded within the county, among them East Tennessee Bridge Burning 1861, Action at Maynardville, and 7 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202019,802
201019,109
200017,808
199013,694
198011,707
19709,072
19608,498
19508,670
19409,030
193011,371
192011,615
191011,414
190012,894
189011,459
188010,260
18707,605
18606,117
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Union

Military engagements that took place in Union, Tennessee.

East Tennessee Bridge Burning 1861
1861
Action at Maynardville
1863

Historic places in Union

National Register of Historic Places listings in Union, Tennessee.

Hamilton-Tolliver Complex
Maynardville
Browse all Tennesseehistoric sites ›

Other counties in Tennessee

Explore census history and historic records for more Tennessee counties.

HendersonHenryHickmanHoustonHumphreysJacksonJamesJeffersonJohnsonKnoxLakeLauderdaleLawrenceLewisLincolnLoudonMaconMadisonMarionMarshall
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Everything a full report reveals about Union County, Tennessee

This page charts the census history of Union County, Tennessee. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Union

When does Union first appear in the US census?
Union, Tennessee first appears in the federal census in 1860, with a recorded population of 6,117.
What is the population of Union?
At the most recent federal census (2020), Union had a recorded population of 19,802.
Were any battles fought in Union?
2 documented military engagements took place in Union, including East Tennessee Bridge Burning 1861, Action at Maynardville.
How many historic places are in Union?
7 sites are listed on the National Register of Historic Places in Union, Tennessee.
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