| Statistic | Union | Missouri | National |
| Population | 12,241 | 6,326,040 | 336,919,644 |
| Population density (sq mi) | 1,347 | 92 | 91 |
| Median age | 34.1 | 38.3 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 52% | 57% | 55% |
| Families w/ Kids under 18 | 49% | 42% | 43% |
| Speak English | 98% | 94% | 79% |
| Speak Spanish | 0% | 3% | 13% |

Union demographics provide invaluable insights into the composition, dynamics and needs of urban and rural areas, enabling them to plan, develop, and govern in ways that promote prosperity, equity and well-being for all residents. The Union population is 12,241 and has a population density of 1,347 people per square mile, compared to the national average of 91. The median age of all residents is 34.1, 52% of people 15 years of age or older are married and 49% have kids under the age of 18. In Union, 28% of households have a median income that is below $25,000 and 9% of households report a median income above $150,000.
Recognizing the racial demographics and ethnicity breakdown of Union is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Union, the racial breakdown comprises 94.4% White, 2.5% Black or African American, 1.7% Asian, 0% American Indian, and 0% Native Hawaiian, with 2.2% of the population identifying as Hispanic or Latino. 98.1% of households reported speaking English only, while 0.4% reported speaking Spanish only. Furthermore, 2% of residents were categorized as foreign-born.
Communities such as Union, with population densities higher than the average, play a significant role in promoting environmental sustainability by decreasing per capita energy consumption, greenhouse gas emissions and land use. Their compact urban development encourages the adoption of energy-efficient buildings, walking, cycling, and public transportation, fostering sustainable lifestyles and minimizing environmental impact. Additionally, densely populated areas tend to cultivate vibrant social and cultural scenes, fueled by a diverse population that contributes to a myriad of cultural events, festivals and community activities. This cultural diversity sparks creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. Union has a population density of 1,347, surpassing the national average of 91 people per square mile, as it stands poised to reap the benefits of dense urban living.
Understanding Populations: By delving into and analyzing the Union demographic stats, we can uncover insightful details regarding the composition and attributes of populations, spanning age, gender, race, ethnicity, income, education and other socio-economic indicators. This comprehension is vital for addressing the diverse needs, preferences and hurdles faced by various demographic groups within communities. Demographics wield significant influence in understanding populations, shaping decision-making processes and championing equity, inclusion, and the overall welfare of all individuals and communities. The Union population and demographic data serves as a cornerstone for tackling social, economic and environmental challenges, while simultaneously nurturing the well-being and resilience of societies.
Education Allocation: Utilizing census data like Union demographics can be useful in guiding education planning, as it helps identify student demographics, school enrollment trends and educational needs. This data assists schools and policymakers in allocating resources and devising effective educational programs. It serves as a vital tool for recognizing disparities in educational access and outcomes among various demographic groups, including racial and ethnic minorities, socio-economic status and students with disabilities. By disaggregating data based on demographic factors, education planners can pinpoint areas of inequity and implement targeted interventions to enhance access, support and outcomes for marginalized students. In essence, Union demographic statistics can play an indispensable role in education by promoting equity, bolstering student success and cultivating inclusive learning environments tailored to meet the needs of all students.
Urban Development: By leveraging demographic data in Union, urban planners can tailor areas to meet the needs of any resident across housing, transportation and public services, all while fostering sustainability and elevating quality of life. Demographic changes can fuel gentrification and neighborhood transformation, whether in urban or rural settings. As neighborhoods attract newcomers with varying income levels and lifestyle preferences, property values may appreciate, potentially displacing established residents and reshaping the neighborhood's fabric. A nuanced understanding of population density, age distribution, household size and income levels is pivotal for guiding decisions on zoning, transportation infrastructure, housing development and public amenities. Utilizing the demographic data in planning and implementing affordable housing initiatives can help mitigate displacement risks and promote inclusive communities.
| Race | Union | Missouri | National |
| White | 94.36% | 82.53% | 73.35% |
| Black | 2.48% | 11.58% | 12.63% |
| Asian | 1.68% | 1.78% | 5.22% |
| American Indian | 0.03% | 0.42% | 0.82% |
| Native Hawaiian | 0.00% | 0.11% | 0.18% |
| Mixed race | 1.45% | 2.44% | 3.06% |
| Other race | 0.00% | 1.13% | 4.75% |