| Statistic | Fairview Heights | Illinois | National |
| Population | 16,620 | 13,081,969 | 336,919,644 |
| Population density (sq mi) | 1,455 | 236 | 91 |
| Median age | 39.6 | 37.4 | 37.7 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 55% | 55% | 55% |
| Families w/ Kids under 18 | 42% | 44% | 43% |
| Speak English | 95% | 77% | 79% |
| Speak Spanish | 3% | 13% | 13% |

The demographics of Fairview Heights offer invaluable insights into the composition, dynamics and needs of both urban and rural areas, empowering planners, developers and policymakers to foster prosperity, equity, and well-being for all residents. With a population of 16,620, Fairview Heights exhibits a population density of 1,455 people per square mile, contrasting with the national average of 91. The median age stands at 39.6, with 55% of individuals aged 15 or older being married and 42% having children under 18. In terms of income equality in Fairview Heights, 16% of households report a median income below $25,000, while 18% report an income exceeding $150,000, showcasing a diverse economic landscape.
Recognizing the racial demographics and ethnicity breakdown of Fairview Heights is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Fairview Heights, the racial breakdown comprises 58.7% White, 30.8% Black or African American, 1.7% Asian, 0% American Indian, and 0% Native Hawaiian, with 3.8% of the population identifying as Hispanic or Latino. 95.2% of households reported speaking English only, while 2.7% reported speaking Spanish only. Furthermore, 2.8% of residents were categorized as foreign-born.
Fairview Heights could serve as a prime example of how areas with higher-than-average population density can champion environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Embracing compact urban development, these densely populated areas promote energy-efficient buildings and encourages walking, cycling and public transit use, fostering sustainable lifestyles and minimizing environmental impact. Moreover, densely populated regions are renowned for their vibrant social and cultural scenes, driven by a diverse population that organizes an array of cultural events, festivals and community activities. This cultural diversity ignites creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. The Fairview Heights population density is 1,455, surpassing the national average of 91 per square miles, positioning itself to capitalize on the advantages of dense urban living.
Urban Development: Utilizing Fairview Heights demographic statistics and data, urban planners can craft and develop areas that cater to local residents, encompassing housing, transportation and public services, all while emphasizing sustainability and enriching quality of life. Demographic transitions can contribute to gentrification and neighborhood evolution, whether in urban or rural environments. As neighborhoods draw in new residents with varying income levels and lifestyle preferences, property values may appreciate, potentially displacing longtime inhabitants and reshaping the neighborhood's fabric. Comprehensive insights into population density, age distribution, household size, and income levels are instrumental in guiding decisions regarding zoning, transportation infrastructure, housing expansion and public amenities. Harnessing Fairview Heights demographic stats for planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
Understanding Populations: By reporting and analyzing Fairview Heights 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 Fairview Heights population data serves as a cornerstone for addressing social, economic and environmental challenges, while also fostering the well-being and strength of communities.
Healthcare Planning: By analyzing the Fairview Heights 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.

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| Race | Fairview Heights | Illinois | National |
| White | 58.71% | 72.14% | 73.35% |
| Black | 30.78% | 14.30% | 12.63% |
| Asian | 1.74% | 5.10% | 5.22% |
| American Indian | 0.00% | 0.23% | 0.82% |
| Native Hawaiian | 0.00% | 0.03% | 0.18% |
| Mixed race | 8.68% | 2.34% | 3.06% |
| Other race | 0.08% | 5.86% | 4.75% |