| Statistic | O'Fallon | Missouri | National |
| Population | 88,132 | 6,137,428 | 328,239,523 |
| Population density (sq mi) | 2,935 | 90 | 91 |
| Median age | 37.5 | 38.3 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 63% | 57% | 55% |
| Families w/ Kids under 18 | 50% | 42% | 43% |
| Speak English | 94% | 94% | 79% |
| Speak Spanish | 2% | 3% | 13% |
O'Fallon 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 O'Fallon population is 88,132 and has a population density of 2,935 people per square mile, compared to the national average of 91. The median age of all residents is 37.5, 63% of people 15 years of age or older are married and 50% have kids under the age of 18. In O'Fallon, 8% of households have a median income that is below $25,000 and 32% of households report a median income above $150,000.
Recognizing the racial demographics and ethnicity breakdown of O'Fallon is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In O'Fallon, the racial breakdown comprises 87.8% White, 4.8% Black or African American, 3.8% Asian, 0.1% American Indian, and 0% Native Hawaiian, with 3.5% of the population identifying as Hispanic or Latino. 94.2% of households reported speaking English only, while 2.1% reported speaking Spanish only. Furthermore, 4.5% of residents were categorized as foreign-born.
High population density areas typically offer a diverse array of amenities and services within walking distance or a short commute, enriching residents' quality of life and well-being. Accessible healthcare facilities, educational institutions, cultural venues, restaurants, shopping and public transportation options contribute to the convenience and vibrancy of these communities. The population density of of O'Fallon is 2,935 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the nation.
Understanding Populations: Reporting and analyzing the demographic data in O'Fallon can allow us to gain insights into the characteristics and composition of populations, including age, gender, race, ethnicity, income, education and other socio-economic factors. This understanding is essential for addressing the diverse needs, preferences and challenges of different demographic groups within communities. Demographics can play a crucial role in understanding populations, informing decision-making processes and promoting equity, inclusion, and well-being for all individuals and communities. O'Fallon population data serves as a foundation for addressing social, economic, and environmental challenges and promoting the well-being and resilience of societies.
Social Cohesion: The analysis and understanding of demographics are essential for promoting social cohesion and fostering appreciation among diverse communities. By embracing and acknowledging differences in O'Fallon demographics, societies can promote inclusivity, diversity and social harmony while addressing social inequalities and advocating for equal opportunities. Racial demographics can reflect the diversity within a population and are instrumental in fostering inclusive and welcoming communities. Embracing ethnic diversity strengthens social connections, promotes cultural understanding and enriches society by celebrating the contributions of individuals from diverse racial and ethnic backgrounds.
Healthcare Planning: By analyzing the O'Fallon demographic data, it can potentially inform healthcare planning and delivery by identifying population health needs, disparities, and risk factors. Understanding demographic trends helps healthcare providers and policymakers allocate resources, develop prevention and intervention programs, and address health inequities within communities. By leveraging demographic data, healthcare providers and policymakers can work towards achieving equitable, accessible, and high-quality healthcare for all individuals and communities. This proactive approach to healthcare planning ensures that interventions are targeted, resources are allocated efficiently, and healthcare services are tailored to meet the diverse needs of populations.
| Race | O'Fallon | Missouri | National |
| White | 87.82% | 82.53% | 73.35% |
| Black | 4.81% | 11.58% | 12.63% |
| Asian | 3.78% | 1.78% | 5.22% |
| American Indian | 0.07% | 0.42% | 0.82% |
| Native Hawaiian | 0.04% | 0.11% | 0.18% |
| Mixed race | 2.84% | 2.44% | 3.06% |
| Other race | 0.65% | 1.13% | 4.75% |
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