| Statistic | Crestwood | Missouri | National |
| Population | 12,278 | 6,326,040 | 336,919,644 |
| Population density (sq mi) | 3,412 | 92 | 91 |
| Median age | 41.9 | 38.3 | 37.7 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 69% | 57% | 55% |
| Families w/ Kids under 18 | 40% | 42% | 43% |
| Speak English | 94% | 94% | 79% |
| Speak Spanish | 2% | 3% | 13% |

The demographics of Crestwood 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 12,278, Crestwood exhibits a population density of 3,412 people per square mile, contrasting with the national average of 91. The median age stands at 41.9, with 69% of individuals aged 15 or older being married and 40% having children under 18. In terms of income equality in Crestwood, 13% of households report a median income below $25,000, while 31% report an income exceeding $150,000, showcasing a diverse economic landscape.
The 5 largest ethnic groups in Crestwood are 94.6% White, 1.5% Black or African American, 1.6% Asian, 0% American Indian and 0% Native Hawaiian, with 2.8% of the population identifying as Hispanic or Latino. Of note, 93.5% of households reported speaking English only, while 2.1% reported speaking Spanish only. Additionally, 4.4% of residents were classified as foreign-born. The Crestwood racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.
In areas with high population density, residents enjoy a wealth of amenities and services conveniently located within walking distance or a short commute. Access to healthcare facilities, educational institutions, cultural venues, dining options, retail stores and public transit enhances residents' quality of life and overall well-being. Crestwood has a population density of 3,412 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the country.
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 Crestwood 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.
Policy Planning: Demographic data and statistics serve as vital tools for informing policy and decision-making processes across various levels of government, as well as within organizations and businesses. Through the reporting and analysis of demographic data, policymakers, government officials, and organizational leaders can pinpoint areas of need, allocate resources efficiently, and craft tailored policies and programs to address the unique needs and priorities of different demographic groups. The utilization of demographic data in Crestwood is instrumental in policy planning, facilitating resource allocation, evidence-based decision-making, priority identification, trend forecasting, policy impact assessment, and the promotion of equity and inclusion. By harnessing this data effectively, policymakers can devise targeted, impactful, and inclusive policies that cater to the diverse needs of communities.
Urban Development: Urban planners can leverage demographics data in Crestwood 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 Crestwood demographics data into planning and implementing affordable housing initiatives can help mitigate displacement risks.

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| Race | Crestwood | Missouri | National |
| White | 94.56% | 82.53% | 73.35% |
| Black | 1.46% | 11.58% | 12.63% |
| Asian | 1.62% | 1.78% | 5.22% |
| American Indian | 0.00% | 0.42% | 0.82% |
| Native Hawaiian | 0.00% | 0.11% | 0.18% |
| Mixed race | 1.02% | 2.44% | 3.06% |
| Other race | 1.34% | 1.13% | 4.75% |