| Statistic | Lake St. Louis | Missouri | National |
| Population | 16,357 | 6,137,428 | 328,239,523 |
| Population density (sq mi) | 1,915 | 90 | 91 |
| Median age | 45.1 | 38.3 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 67% | 57% | 55% |
| Families w/ Kids under 18 | 36% | 42% | 43% |
| Speak English | 94% | 94% | 79% |
| Speak Spanish | 4% | 3% | 13% |
The demographics of Lake St. Louis 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 16,357, Lake St. Louis exhibits a population density of 1,915 people per square mile, contrasting with the national average of 91. The median age stands at 45.1, with 67% of individuals aged 15 or older being married and 36% having children under 18. In terms of income equality in Lake St. Louis, 6% of households report a median income below $25,000, while 38% report an income exceeding $150,000, showcasing a diverse economic landscape.
The Lake St. Louis 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 Lake St. Louis is 90.5% White, 2.8% Black or African American, 1.6% Asian, 0.1% American Indian and 0% Native Hawaiian - 4.3% of the population identify as Hispanic or Latino. Of all households, 94.1% reported speaking English only, while 3.5% reported speaking Spanish only. A total of 4% of residents were considered foreign born.
Lake St. Louis has a population density that is well above-average, which 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. Lake St. Louis has a population density of 1,915 people per square mile, exceeding the national average of 91 and positions itself in a good spot to reap the benefits of densely populated areas.
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 Lake St. Louis 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.
Urban Development: Utilizing Lake St. Louis 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 Lake St. Louis demographic stats for planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
Education Allocation: In education planning, Lake St. Louis demographic data can be invaluable for identifying student demographics, school enrollment trends and educational needs. This data aids schools and policymakers in resource allocation and the formulation of effective educational programs. It serves as a crucial tool for recognizing disparities in educational access and outcomes among different demographic groups, including racial and ethnic minorities, socio-economic status and students with disabilities. Through the disaggregation of data by demographic factors, education planners can pinpoint areas of inequity and implement targeted interventions to enhance access, support, and outcomes for marginalized students. Overall, Lake St. Louis demographic data can be an essential tool in education for promoting equity, facilitating student success, and nurturing inclusive learning environments that cater to the needs of all students.
| Race | Lake St. Louis | Missouri | National |
| White | 90.49% | 82.53% | 73.35% |
| Black | 2.83% | 11.58% | 12.63% |
| Asian | 1.57% | 1.78% | 5.22% |
| American Indian | 0.13% | 0.42% | 0.82% |
| Native Hawaiian | 0.00% | 0.11% | 0.18% |
| Mixed race | 4.46% | 2.44% | 3.06% |
| Other race | 0.52% | 1.13% | 4.75% |
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