| Statistic | O'Fallon | Illinois | National |
| Population | 29,487 | 12,671,821 | 328,239,523 |
| Population density (sq mi) | 1,891 | 228 | 91 |
| Median age | 37.7 | 37.4 | 37.7 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 67% | 55% | 55% |
| Families w/ Kids under 18 | 45% | 44% | 43% |
| Speak English | 92% | 77% | 79% |
| Speak Spanish | 3% | 13% | 13% |
The population of O'Fallon is 29,487, with a population density of 1,891 people per square mile, diverging from the national average of 91. The median age is 37.7 and 67% of individuals aged 15 or older are married, while 45% have children under 18. As far as income equality in O'Fallon goes, 6% of households have a median income below $25,000, whereas 33% report an income exceeding $150,000. The O'Fallon demographics data can provide indispensable insights into the composition, dynamics and needs of cities, towns or even villages, empowering planners, developers and policymakers to devise strategies that foster prosperity, equity and well-being for all residents.
The O'Fallon racial demographics and ethnicity breakdown serves as a critical tool for understanding and addressing systemic inequities, promoting social justice and inclusion and building stronger, more resilient communities. The racial breakdown in O'Fallon is 79.1% White, 10.2% Black or African American, 3.8% Asian, 0.1% American Indian and 0% Native Hawaiian - 4.9% of the population identify as Hispanic or Latino. Of all households, 92.2% reported speaking English only, while 3% reported speaking Spanish only. A total of 4.6% of residents were considered foreign born.
O'Fallon, characterized by above-average population density, plays a pivotal role in promoting environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Its compact urban development encourages energy-efficient buildings, active transportation modes like walking and cycling and the utilization of public transit, fostering sustainable lifestyles and mitigating environmental impact. Additionally, the area's dense population contributes to a vibrant social and cultural scene, featuring a diverse array of cultural events, festivals and community activities. This cultural diversity fuels creativity, innovation, and cross-cultural exchange, enhancing the community's social fabric. The O'Fallon population density stands at 1,891, exceeding the national average, at 91 people per square mile, positioning it in a nice position to reap the benefits of densely populated areas.
Healthcare Planning: Analyzing the demographic data in O'Fallon has the potential to inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. Healthcare providers and policymakers can allocate resources more effectively, develop prevention and intervention programs and address health inequities within communities by understanding demographic trends. Leveraging demographic statistics can enable healthcare providers and policymakers to strive for equitable, accessible and high-quality healthcare for all individuals and communities. This proactive healthcare planning approach ensures targeted interventions, efficient resource allocation and tailored healthcare services to meet diverse population needs.
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.
Understanding Populations: By reporting and analyzing O'Fallon demographics, we can acquire valuable insights into the makeup and traits of populations, encompassing age, gender, race, ethnicity, income, education and various socio-economic factors. This comprehension is vital for tackling the varied needs, preferences, and obstacles encountered by different demographic groups within communities. Demographics serve a pivotal role in comprehending populations, guiding decision-making processes and advancing equity, inclusion and overall well-being for all individuals and communities. The O'Fallon population data serves as a cornerstone for addressing social, economic and environmental challenges, while also fostering the well-being and strength of communities.
| Race | O'Fallon | Illinois | National |
| White | 79.11% | 72.14% | 73.35% |
| Black | 10.16% | 14.30% | 12.63% |
| Asian | 3.77% | 5.10% | 5.22% |
| American Indian | 0.07% | 0.23% | 0.82% |
| Native Hawaiian | 0.00% | 0.03% | 0.18% |
| Mixed race | 5.12% | 2.34% | 3.06% |
| Other race | 1.77% | 5.86% | 4.75% |
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