What is the population of Union?

The population of Union, MO is 12,094.

Where is Union located?

Union, MO is located at latitude 38.4500500 and longitude -91.0084800. It is in United States.

What is the area of Union?

The area of Union, MO is 9.16 km².

What is the elevation of Union?

Union, MO has an elevation of 162 meters (531 feet) above sea level.

What time zone is Union in?

Union, MO is in the America/Chicago time zone.

What state is Union in?

Union is in the state of Missouri, United States.

What county is Union, MO in?

Union is in Franklin County, Missouri.

How has the population of Union changed?

The population of Union, MO has increased from 10,204 (2010) to 12,094 (2020), a change of 18.5%.

Union, Missouri

Union: city in and county seat of Franklin County, Missouri, United States.

About

Union is a city located in the county of Franklin in the U.S. state of Missouri. Its population at the 2010 census was 10,204 and a population density of 1,114 people per km². After 10 years in 2020 city had an estimated population of 12,094 inhabitants.

Union locator map — Location of Union on Missouri map.

Quick Facts about Union

Population	12,094 (2020)
Country	United States of America
State	Missouri (United States)
County	Franklin County
Postal code	63084
Phone Area Codes	636
Area	9.16 km²
Latitude & Longitude	38.4501,-91.0085
Altitude	531 feet / 162 meters
Capital city	Union is capital of Franklin County
Time Zone	Central Time Zone
Local time	07:00:01 (23rd September 2026)
Density	1,320 Pop. per km² as of 2020
Population growth	18.52% (2010-2020)
Weather	72℉ Mostly Sunny 7-days weather

Franklin County Missouri Incorporated and Unincorporated areas Union Highlighted locator map image

Geography

Union is located at 38°27'0"N 91°0'31"W (38.4500500, -91.0084800).

Union map

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Weather

72°F

Mostly Sunny

1 to 5 mph N Wednesday

Mostly sunny, with a high near 72. North wind 1 to 5 mph.

7-Day Forecast

Official website of Union

Official Website

Demographics

The population of Union increased by 18.52% in 10 years.

Year	Population	% Change	Method
2010	10,204	-	census
2011	10,360	1.53%	estimation process
2012	10,440	0.77%	estimation process
2013	10,555	1.1%	estimation process
2014	10,832	2.62%	estimation process
2015	10,925	0.86%	estimation process
2016	11,248	2.96%	estimation process
2017	11,497	2.21%	estimation process
2018	11,697	1.74%	estimation process
2019	11,968	2.32%	estimation process
2020	12,094	1.05%	estimation process

Union zip code is 63084. County name: Franklin, County fips: 29071

Union City

Services and Civic Places in Union

1Union City Hall

Rating: 1 (1)

10 E Locust St, Union, MO 63084 View details

Phone: +16365833600 | Website available

2US Farm Services Agency

409 E State St, Union, MO 63084, United States View details

Phone: +16365832303 | Website available

People born in Union (3)

People born in Union, including United States Major general Paul J. Mueller, Major League Baseball pitcher Roy Parker, William L. Nicholson III, .

More notable people

Nearby Schools and Colleges

Schools and campuses linked to Union, MO. Select a name to open its map and contact details.

Code	Name	City	ZIP
177250	East Central College	Union (MO)	63084

Nearby Transit Stations (6)

Rail and bus stations connected to Union, MO. Select a station to open its map and address details.

Code	Name	Address	Type
WAH	Washington	301 West Front St.	RAIL
HEM	Hermann	Wharf & Gutenberg Sts.	RAIL
KWD	Kirkwood	110 West Argonne Dr.	RAIL
STL	Gateway Transportation Center	551 South 16th St.	RAIL
ALN	Alton	3400 College Ave.	RAIL

Nearby Post Offices

Closest post offices linked to Union.

Post Office Name	City	ZIP
Union Post Office	Union (MO)	63084

Other places with the same name (9)

Union, New Jersey A city in Union County, New Jersey. with a population of 67,137 people.
Union, New York town in Broome County, New York, United States. with a population of 52,262 people.
Union, Ohio city in Montgomery and Miami Counties in the U.S. state of Ohio. with a population of 6,909 people.
Union, Kentucky township in Boone County, Iowa. with a population of 6,116 people.
Union, Pennsylvania township in southeastern Union County, Pennsylvania. with a population of 5,661 people.
Union, Maine town in Knox County, Maine, United States. with a population of 2,275 people.
Union, Oregon township of Union County, New Jersey. with a population of 2,207 people.
Union, Indiana city in Indiana, United States of America. with a population of 2,160 people.
Union, Mississippi county in Mississippi, United States. with a population of 1,876 people.

Other cities in Franklin County

Cities, towns, neighborhoods & other populated places in Franklin County , MO.

City Name	Population	Title
Washington	14,243	City in Franklin County, Missouri
Sullivan	7,117	City in Missouri
Pacific	7,097	City in Missouri
Saint Clair	4,689	City in Franklin County, Missouri, United States
Gray Summit	2,701	Census designated place
Villa Ridge	2,636	Census designated place
New Haven	2,076	Town in Missouri

Distance to Other Cities

Union distances to largest Missouri cities