Union, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Union, Missouri is 12,560 as of the 2023 American Community Survey, making it the 73rd-largest city in Missouri. The median household income is $71,760, the median home value is $199,100, and the median age is 33.9.
The population has grown 28.2% since 2010 (10,294 → 13,198).
12,560
Population
1381
People / sq mi
$71,760
Median Income
$199,100
Median Home Value
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Union covers 9.1 sq mi of land at 1381 people per square mile.
About Union, MO
Union skews on age — the median resident is 33.9, younger than the national median. With 12,560 residents, Union is a city in Missouri.
Median household income is $71,760, below the US median of $78,538. The poverty rate is 7.3%, below the national 12.4%. Housing is relatively affordable, with a median home value of $199,100, with typical rent around $847.
25.6% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. Remote work is below the national 14.0% at 9.0%, and the average commute runs about 25 minutes each way.
Union city Population History (2010-2024)
The city of Union city had a population of 10,294 in 2010 and 13,198 in 2024, a 28.2% growth over 14 years. The peak was 13,198 in 2024. Average annual growth rate: 1.79%.
13,198
Population (2024)
10,294
Population (2010)
13,198
Peak (2024)
1.79%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,294 |
| 2011 | 10,368 |
| 2012 | 10,448 |
| 2013 | 10,563 |
| 2014 | 10,840 |
| 2015 | 10,932 |
| 2016 | 11,252 |
| 2017 | 11,505 |
| 2018 | 11,708 |
| 2019 | 11,990 |
| 2020 | 12,393 |
| 2021 | 12,509 |
| 2022 | 12,762 |
| 2023 | 13,007 |
| 2024 | 13,198 |
Race & Ethnicity
| White | 87.5% |
| Black or African American | 2.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Economy & Income
$71,760
Median Household Income
$33,008
Per Capita Income
7.3%
Poverty Rate
3.4%
Unemployment Rate
Housing
$199,100
Median Home Value
$847
Median Rent
62.9%
Owner-Occupied
Education
91.6%
High School+
25.6%
Bachelor's+
Commute
0.6%
Drive Alone
77.0%
Public Transit
9.0%
Work From Home
24.9 min
Avg Commute
Community Profile
19.8%
Foreign Born
97.6%
Non-English at Home
9.6%
Veterans
12.0%
With Disability
91.4%
Health Insurance
95.0%
Internet Access
Employment by Industry
| Manufacturing | 25.8% |
| Professional, Scientific & Management | 23.3% |
| Education, Health Care & Social Services | 8.1% |
| Finance, Insurance & Real Estate | 7.5% |
| Public Administration | 6.5% |
| Information | 4.7% |
| Construction | 4.2% |
| Retail Trade | 3.1% |
| Arts, Entertainment & Food Services | 2.7% |
| Transportation & Warehousing | 1.4% |
| Agriculture & Mining | 0.3% |
Largest cities in Missouri
Largest counties in Missouri
Part of Missouri
Metro areas in Missouri
City rankings
Frequently Asked Questions
Union, Missouri has a population of 12,560 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 73rd-largest city in Missouri.
The median household income in Union, Missouri is $71,760, with 7.3% of residents living below the federal poverty level.
The median home value in Union, Missouri is $199,100, with median monthly rent at $847 and a homeownership rate of 62.9%.
The median age in Union, Missouri is 33.9 years. The population is 51.0% male and 49.0% female.
The population has grown 28.2% since 2010 (10,294 → 13,198).
Union city, MO Climate
Union city, MO has an average annual temperature of 12.7°C (55°F) and receives about 994 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.7°C
Avg Temp
994
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 29° | 49 mm |
| February | 2° / 35° | 53 mm |
| March | 7° / 45° | 90 mm |
| April | 13° / 55° | 93 mm |
| May | 18° / 64° | 111 mm |
| June | 23° / 73° | 93 mm |
| July | 25° / 78° | 91 mm |
| August | 25° / 76° | 83 mm |
| September | 20° / 68° | 88 mm |
| October | 14° / 57° | 81 mm |
| November | 7° / 45° | 88 mm |
| December | 1° / 34° | 74 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Union city, MO
The most comfortable months to visit Union city, MO are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -7°C low). May is usually the wettest month.
Where to stay near Union
Visiting or relocating to Union, MO? Compare hotels and short-term rentals across the metro — live availability and prices.
Top-rated places to stay near Union
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Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.