| Statistic | Lemay | Missouri | National |
| Population | 17,056 | 6,326,040 | 336,919,644 |
| Population density (sq mi) | 3,905 | 92 | 91 |
| Median age | 35.4 | 38.3 | 37.7 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 50% | 57% | 55% |
| Families w/ Kids under 18 | 47% | 42% | 43% |
| Speak English | 85% | 94% | 79% |
| Speak Spanish | 2% | 3% | 13% |

The demographics of Lemay 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 17,056, Lemay exhibits a population density of 3,905 people per square mile, contrasting with the national average of 91. The median age stands at 35.4, with 50% of individuals aged 15 or older being married and 47% having children under 18. In terms of income equality in Lemay, 18% of households report a median income below $25,000, while 5% report an income exceeding $150,000, showcasing a diverse economic landscape.
Understanding the Lemay racial demographics and ethnic composition is paramount for addressing systemic inequities, advancing social justice and inclusion and fortifying communities. In Lemay, the racial breakdown indicates 90% White, 3.3% Black or African American, 2.3% Asian, 0.3% American Indian and 0% Native Hawaiian, with 2.4% of the population identifying as Hispanic or Latino. Notably, 84.6% of households reported speaking English only, while 1.7% reported speaking Spanish only. Additionally, 12.2% 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 Lemay is 3,905 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the nation.
Social Cohesion: Analyzing demographics is vital for nurturing social cohesion and fostering understanding among diverse communities. By embracing and respecting variations in Lemay demographics, societies can advance inclusivity, diversity and social unity while combatting social inequalities and advocating for equal opportunities. Racial demographics mirror the diversity within a population and can be instrumental in cultivating inclusive and inviting communities. Embracing diversity strengthens social bonds, fosters cultural appreciation and enriches society by acknowledging the contributions of individuals from various racial and ethnic backgrounds.
Healthcare Planning: An analysis of Lemay demographics can inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. Understanding demographic trends allows healthcare providers and policymakers to allocate resources effectively, develop prevention and intervention programs and address health inequities within communities. Leveraging demographic data, healthcare providers, and policymakers strive to achieve equitable, accessible, and high-quality healthcare for all individuals and communities. This proactive healthcare planning approach ensures targeted interventions, efficient resource allocation and customized healthcare services to meet the diverse needs of populations.
Urban Development: Lemay demographic statistics are invaluable for urban planners in designing and developing areas that cater to residents' needs, encompassing housing, transportation, and public services, all while fostering sustainability and enhancing quality of life. Shifts in demographics can influence gentrification and neighborhood transformation, whether in urban or rural settings. As neighborhoods attract new residents with varying income levels and lifestyle preferences, property values may increase, potentially displacing long-term residents and altering the neighborhood's character. Analyzing population density, age distribution, household size, and income levels is crucial for guiding decisions regarding zoning, transportation infrastructure, housing expansion and public amenities. Utilizing Lemay demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
| Race | Lemay | Missouri | National |
| White | 90.01% | 82.53% | 73.35% |
| Black | 3.28% | 11.58% | 12.63% |
| Asian | 2.33% | 1.78% | 5.22% |
| American Indian | 0.27% | 0.42% | 0.82% |
| Native Hawaiian | 0.00% | 0.11% | 0.18% |
| Mixed race | 2.87% | 2.44% | 3.06% |
| Other race | 1.23% | 1.13% | 4.75% |