| Statistic | Marion | Illinois | National |
| Population | 17,539 | 12,671,821 | 328,239,523 |
| Population density (sq mi) | 1,219 | 228 | 91 |
| Median age | 38.9 | 37.4 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 53% | 55% | 55% |
| Families w/ Kids under 18 | 46% | 44% | 43% |
| Speak English | 98% | 77% | 79% |
| Speak Spanish | 1% | 13% | 13% |
The population in Marion is 17,539, while the population density is 1,219 people per square mile, contrasting with the national average of 91. The median age stands at 38.9, with 53% of individuals aged 15 or older being married and 46% having children under 18. In terms of household income equality in Marion, 32% of households report a median income below $25,000, while 10% report an income exceeding $150,000. The Marion demographics data can provide invaluable insight into the composition, dynamics and needs of urban and rural areas, enabling planners, developers and policymakers to strategize effectively for the promotion of prosperity, equity and well-being for all residents in the area.
Recognizing the racial demographics and ethnicity breakdown of Marion is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Marion, the racial breakdown comprises 87.4% White, 7.3% Black or African American, 0.9% Asian, 0% American Indian, and 0.2% Native Hawaiian, with 1.7% of the population identifying as Hispanic or Latino. 98.2% of households reported speaking English only, while 0.6% reported speaking Spanish only. Furthermore, 1% of residents were categorized as foreign-born.
Areas like Marion that have a higher than average population density tend to support environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Compact urban development encourages energy-efficient buildings, walking, cycling and the use of public transit, promoting sustainable lifestyles and reducing environmental impact. Densely populated areas also tend to have more vibrant social and cultural scenes, with a diverse population contributing to a wide array of cultural events, festivals and community activities. This diversity fosters creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. The Marion population density is higher than average and comes in at 1,219 people per square mile (compared to the nationwide average of 91), putting it in a position to take advantage of all the benefits of a densely populated area.
Social Cohesion: The reporting and analysis of demographics are essential for fostering social cohesion and understanding among diverse communities. By acknowledging and valuing differences in Marion demographics, societies can champion inclusivity, diversity and social harmony while tackling social disparities and advocating for equal opportunities. Racial demographics showcase the varied makeup of a population and play a vital role in nurturing inclusive and hospitable communities. Embracing diversity bolsters social cohesion, enhances cultural comprehension and enriches society by honoring the contributions of individuals from diverse racial and ethnic backgrounds.
Understanding Populations: By reporting and analyzing Marion 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 Marion population data serves as a cornerstone for addressing social, economic and environmental challenges, while also fostering the well-being and strength of communities.
Urban Development: Urban planners can leverage demographics data in Marion to design and develop areas that cater to residents' needs, spanning housing, transportation, and public services, while prioritizing sustainability and enhancing quality of life. Demographic changes can contribute to gentrification and neighborhood evolution, whether in urban or rural contexts. As neighborhoods attract new residents with diverse income levels and lifestyle preferences, property values may appreciate, potentially displacing longstanding residents and reshaping the neighborhood's identity. Understanding population density, age distribution, household size and income levels is essential for guiding decisions on zoning, transportation infrastructure, housing development and public amenities. Incorporating Marion demographics data into planning and implementing affordable housing initiatives can help mitigate displacement risks.
| Race | Marion | Illinois | National |
| White | 87.42% | 72.14% | 73.35% |
| Black | 7.35% | 14.30% | 12.63% |
| Asian | 0.94% | 5.10% | 5.22% |
| American Indian | 0.03% | 0.23% | 0.82% |
| Native Hawaiian | 0.17% | 0.03% | 0.18% |
| Mixed race | 3.57% | 2.34% | 3.06% |
| Other race | 0.52% | 5.86% | 4.75% |
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