City in Franklin County, Missouri · 9.1 sq mi · 1,501 people per sq mi
13,651 people live in Union. The typical household earns $73,435, and the median resident is 33.3 years old.
2026 projection
From 12,348 in 2020
Poverty rate 8.15%
Men 34.1 · Women 32.9
1880–2026
13,651
2026 projection
10.6% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1880–2026
13,651
2026 projection
10.6% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 13,651 | +206 | 1.53% |
|---|---|---|---|
| 2025 | 13,445 | +237 | 1.79% |
| 2024 | 13,208 | +207 | 1.59% |
| 2023 | 13,001 | +245 | 1.92% |
| 2022 | 12,756 | +255 | 2.04% |
| 2021 | 12,501 | +153 | 1.24% |
| 2020 | 12,348 | +120 | 0.98% |
| 2019 | 12,228 | +299 | 2.51% |
| 2018 | 11,929 | +228 | 1.95% |
| 2017 | 11,701 | +277 | 2.42% |
Showing 10 of 30 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Union is growing faster than Franklin County, Missouri, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 128 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 12 residents
43% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 43% | 44% | 43% |
| Never married | 35% | 42% | 28% |
| Divorced | 14% | 10% | 19% |
| Widowed | 6% | 3% | 9% |
| Separated | 2% | 1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources