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 04:45:33 (23rd April 2026)
Density 1,320 Pop. per km² as of 2020
Population growth 15.63% (2010-2020)
Weather 82℉ Mostly Sunny 7-days weather
Franklin County Missouri Incorporated and Unincorporated areas Union Highlighted locator map image
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

Click "full screen" full screen map icon to open full mode. View satellite images

Weather

82°F
Mostly Sunny
5 to 15 mph S Thursday

Mostly sunny, with a high near 82.

7-Day Forecast

Official website of Union

Official Website

Demographics

The population of Union increased by 15.63% in 10 years.

Year Population % Change Method
2010 10,204 - census
2011 10,360 1.51% estimation process
2012 10,440 0.77% estimation process
2013 10,555 1.09% estimation process
2014 10,832 2.56% estimation process
2015 10,925 0.85% estimation process
2016 11,248 2.87% estimation process
2017 11,497 2.17% estimation process
2018 11,697 1.71% estimation process
2019 11,968 2.26% estimation process
2020 12,094 1.04% 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

Closest post offices linked to Union.

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

Other places with the same name (21)

  • 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, South Carolina township of Union County, New Jersey with a population of 8,045 people.
  • Union, South Carolina county seat of Union County, South Carolina with a population of 7,535 people.
  • Union, Ohio city in Montgomery and Miami Counties in the U. 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.
  • Union, Connecticut town in Tolland County, Connecticut, United States with a population of 844 people.
  • Union, Wisconsin town in Waupaca County, Wisconsin, United States with a population of 799 people.
  • Union, Illinois village in McHenry County, Illinois, United States with a population of 548 people.
  • Union, West Virginia town in Monroe County, West Virginia, United States with a population of 539 people.
  • Union, Michigan township in Cass County, Michigan with a population of 440 people.
  • Union, Iowa city in Hardin County, Iowa, United States with a population of 373 people.
  • Union, Minnesota township in Houston County, Minnesota with a population of 365 people.
  • Union, Nebraska village in Cass County, Nebraska, United States with a population of 242 people.
  • Union, Alabama town in Alabama, USA with a population of 207 people.
  • Union, North Dakota township in Grand Forks County, North Dakota, United States with a population of 182 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
Gerald 1,327 City in Missouri, United States
Parkway 511 City in Franklin County, Missouri, United States of America
Oak Grove Village 478 Human settlement in Franklin County, Missouri, United States of America
Berger 220 City in Franklin County, Missouri, United States
Leslie 170 Village in Missouri, USA
Miramiguoa Park 121 Human settlement in Franklin County, Missouri, United States of America

Distance to Other Cities

Union distances to largest Missouri cities