| Statistic | St. Louis | Missouri | National |
| Population | 304,709 | 6,137,428 | 328,239,523 |
| Population density (sq mi) | 4,936 | 90 | 91 |
| Median age | 36.0 | 38.3 | 37.7 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 38% | 57% | 55% |
| Families w/ Kids under 18 | 42% | 42% | 43% |
| Speak English | 90% | 94% | 79% |
| Speak Spanish | 3% | 3% | 13% |
St. Louis demographics provide invaluable insights into the composition, dynamics and needs of urban and rural areas, enabling them to plan, develop, and govern in ways that promote prosperity, equity and well-being for all residents. The St. Louis population is 304,709 and has a population density of 4,936 people per square mile, compared to the national average of 91. The median age of all residents is 36, 38% of people 15 years of age or older are married and 42% have kids under the age of 18. In St. Louis, 29% of households have a median income that is below $25,000 and 12% of households report a median income above $150,000.
The St. Louis racial demographics and ethnicity breakdown could be indispensable tools for recognizing and rectifying systemic inequities, fostering social justice and inclusion and cultivating resilient communities. In St. Louis, the racial breakdown reveals 46.4% White, 45.7% Black or African American, 3.4% Asian, 0.3% American Indian and 0% Native Hawaiian, with 4.1% of the population identifying as Hispanic or Latino. Of all households, 90.3% reported speaking English only, while 3.1% reported speaking Spanish only. Moreover, 6.9% of residents were classified as foreign-born.
High population density areas are renowned for their extensive array of amenities and services, easily accessible to residents within walking distance or a short commute. From healthcare facilities and educational institutions to cultural venues, dining establishments, retail shops and public transportation options, these communities offer convenience and enrichment to their inhabitants. The St. Louis population density is 4,936 people per square mile, well above the national average of 91, making it one of the most densely populated cities in the nation.
Social Cohesion: Reporting and analyzing demographics can play a crucial role in fostering social cohesion and understanding among diverse communities. By recognizing and appreciating differences in St. Louis demographics, societies can promote inclusivity, diversity and social harmony, while addressing social disparities and promoting equal opportunities for all individuals. Racial demographics reflect the diversity of a population and contribute to fostering inclusive and welcoming communities. Embracing diversity strengthens social cohesion, promotes cultural understanding and enriches the fabric of society by celebrating the contributions of individuals from different racial and ethnic backgrounds.
Education Allocation: Utilizing census data like St. Louis demographics can be useful in guiding education planning, as it helps identify student demographics, school enrollment trends and educational needs. This data assists schools and policymakers in allocating resources and devising effective educational programs. It serves as a vital tool for recognizing disparities in educational access and outcomes among various demographic groups, including racial and ethnic minorities, socio-economic status and students with disabilities. By disaggregating data based on demographic factors, education planners can pinpoint areas of inequity and implement targeted interventions to enhance access, support and outcomes for marginalized students. In essence, St. Louis demographic statistics can play an indispensable role in education by promoting equity, bolstering student success and cultivating inclusive learning environments tailored to meet the needs of all students.
Urban Development: St. Louis 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 St. Louis demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
| Race | St. Louis | Missouri | National |
| White | 46.44% | 82.53% | 73.35% |
| Black | 45.66% | 11.58% | 12.63% |
| Asian | 3.37% | 1.78% | 5.22% |
| American Indian | 0.26% | 0.42% | 0.82% |
| Native Hawaiian | 0.04% | 0.11% | 0.18% |
| Mixed race | 3.10% | 2.44% | 3.06% |
| Other race | 1.13% | 1.13% | 4.75% |
Here are the best places to live in Missouri
10 Best cities in Missouri for employment
Top 10 cities in Missouri with the best education system
Top 10 best public schools in St. Louis