Louisiana

Union

21,107
2020 population
1840
first census record
19
census records

About Union

Union, Louisiana, first appears in the United States federal census in 1840, when it recorded a population of 1,838. At the most recent census, in 2020, its population stood at 21,107.

Its recorded population peaked at 22,803 in 2000, and has since declined by roughly 7 percent.

On the ground today, 10 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202021,107
201022,721
200022,803
199020,690
198021,167
197018,447
196017,624
195019,141
194020,943
193020,731
192019,621
191020,451
190018,520
189017,304
188013,526
187011,685
186010,389
18508,203
18401,838
Source

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

Historic places in Union

National Register of Historic Places listings in Union, Louisiana.

Edgewood
Farmerville
Alabama Methodist Church
Bernice
Browse all Louisianahistoric sites ›

Other counties in Louisiana

Explore census history and historic records for more Louisiana counties.

IbervilleJacksonJeffersonJefferson DavisLa SalleLafayetteLafourcheLaSalleLincolnLivingstonMadisonMorehouseNatchitochesOrleansOuachitaParishPlaqueminesPointe CoupeeRapidesRed River
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Everything a full report reveals about Union County, Louisiana

This page charts the census history of Union County, Louisiana. 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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Explore Louisiana records

Louisianahistory ›NRHP historic sites ›Notable people from Louisiana›

Frequently asked about Union

When does Union first appear in the US census?
Union, Louisiana first appears in the federal census in 1840, with a recorded population of 1,838.
What is the population of Union?
At the most recent federal census (2020), Union had a recorded population of 21,107.
When did Union's population peak?
Union's recorded population peaked at 22,803 in 2000.
How many historic places are in Union?
10 sites are listed on the National Register of Historic Places in Union, Louisiana.
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