Union

City in Franklin County, Missouri

View of Union, Missouri
Photo: Paul Sableman · CC BY 2.0

Union is a city in Franklin County, Missouri, with 12,348 residents (2020 Census). It sits at 531 ft (162 m) above sea level. The nearest town is St. Clair, 6.3 miles S.

About Union

Union is a city in and the county seat of Franklin County, Missouri, United States. It is located on the Bourbeuse River, 50 miles (80 km) southwest of St. Louis. The population was 12,348 at the 2020 census and predicted to be around at 13,507 in 2026.

Text: Wikipedia · CC BY-SA 4.0

Union weather: 7-day forecast

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Source: National Weather Service (NOAA).

Nearest webcams to Union

There are no webcams in Union itself. These are the closest, 35 miles away or more.

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Webcams: Windy.com

Living in Union

Median household income
$73,435
Median home value
$205,200
Median rent
$858/mo
Median age
33.3
Cost of living and demographics of Union ›

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Map of Union

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Union Street View

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Union, MO population

Union had 12,348 residents in the 2020 Census.

2020 Census12,348
Density1,359 per sq mi (525 per km²)

Source: U.S. Census Bureau, Decennial Census.

Union at a glance

StateMissouri (MO)
CountyFranklin County
TypeCity
Population12,348 (2020)
Land area9.09 sq mi (23.5 km²)
Elevation531 ft (162 m)
Coordinates38.4378° N, 90.9958° W
ZIP code63084
Official websiteunionmissouri.org
Census code (GEOID)2974626

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Union

Straight-line distance between town centers.

Frequently asked questions about Union

What county is Union in?

Union is in Franklin County, Missouri.

What is the population of Union, MO?

12,348 people lived in Union at the 2020 Census.

What is the ZIP code of Union, MO?

The ZIP code of Union is 63084.

What is the elevation of Union?

531 feet (162 m) above sea level.

What towns are near Union?

St. Clair (6.3 mi), Villa Ridge (6.4 mi), Parkway (7.2 mi), Lake St. Clair (7.9 mi), Washington (8.0 mi).

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