| Statistic | Brentwood | Tennessee | National |
| Population | 44,025 | 7,032,421 | 336,919,644 |
| Population density (sq mi) | 1,068 | 171 | 91 |
| Median age | 42.6 | 38.5 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 69% | 57% | 55% |
| Families w/ Kids under 18 | 50% | 41% | 43% |
| Speak English | 90% | 93% | 79% |
| Speak Spanish | 2% | 4% | 13% |

Understanding the demographics of Brentwood is essential for gaining insights into the composition, dynamics and needs of any city, town or village. This knowledge empowers planners, developers and policymakers to strategize effectively, promoting prosperity, equity and well-being for all residents. The Brentwood population is 44,025, with a population density of 1,068 people per square mile, diverging from the national average of 91. The median age is 42.6, and 69% of individuals aged 15 or older are married, while 50% have children under 18. As far as income equality in Brentwood, 6% of households have a median income below $25,000, whereas 62% report an income exceeding $150,000, indicating a varied economic landscape within the area.
The Brentwood 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 Brentwood is 86.8% White, 2.7% Black or African American, 7.2% Asian, 0.1% American Indian and 0% Native Hawaiian - 3.9% of the population identify as Hispanic or Latino. Of all households, 89.8% reported speaking English only, while 2.5% reported speaking Spanish only. A total of 9% of residents were considered foreign born.
Brentwood 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. Brentwood has a population density of 1,068 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.
Understanding Populations: Analyzing and interpreting the Brentwood demographic data provides us with valuable insights into the characteristics and composition of populations, encompassing age, gender, race, ethnicity, income, education and other socio-economic variables. This understanding is crucial for addressing the diverse needs, preferences and challenges encountered by various demographic groups within communities. Demographics play a crucial role in understanding populations, informing decision-making processes, and advancing equity, inclusion, and overall well-being for all individuals and communities. The Brentwood population and demographic data serves as a foundation for addressing social, economic and environmental challenges, while also nurturing the well-being and resilience of societies.
Urban Development: Urban planners can leverage demographics data in Brentwood 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 Brentwood demographics data into planning and implementing affordable housing initiatives can help mitigate displacement risks.
Healthcare Planning: The analysis of Brentwood demographics can offer insights into healthcare planning and delivery, identifying population health needs, disparities and risk factors. By understanding demographic trends, healthcare providers and policymakers can allocate resources effectively, develop prevention and intervention programs and address health inequities within communities. Through the use of demographic data and statistics, healthcare providers and policymakers aim to achieve equitable, accessible and high-quality healthcare for all individuals and communities. This proactive approach to healthcare planning ensures targeted interventions, efficient resource allocation and customized healthcare services to meet the diverse needs of populations.
| Race | Brentwood | Tennessee | National |
| White | 86.84% | 77.84% | 73.35% |
| Black | 2.73% | 16.81% | 12.63% |
| Asian | 7.23% | 1.61% | 5.22% |
| American Indian | 0.08% | 0.29% | 0.82% |
| Native Hawaiian | 0.00% | 0.05% | 0.18% |
| Mixed race | 2.74% | 2.03% | 3.06% |
| Other race | 0.37% | 1.38% | 4.75% |