| Statistic | Old Westbury | New York | National |
| Population | 4,784 | 20,171,207 | 336,919,644 |
| Population density (sq mi) | 558 | 428 | 91 |
| Median age | 27.5 | 38.2 | 37.7 |
| Male/Female ratio | 0.8:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 46% | 52% | 55% |
| Families w/ Kids under 18 | 33% | 43% | 43% |
| Speak English | 64% | 70% | 79% |
| Speak Spanish | 6% | 15% | 13% |

The population of Old Westbury is 4,784, with a population density of 558 people per square mile, diverging from the national average of 91. The median age is 27.5 and 46% of individuals aged 15 or older are married, while 33% have children under 18. As far as income equality in Old Westbury goes, 6% of households have a median income below $25,000, whereas 69% report an income exceeding $150,000. The Old Westbury demographics data can provide indispensable insights into the composition, dynamics and needs of cities, towns or even villages, empowering planners, developers and policymakers to devise strategies that foster prosperity, equity and well-being for all residents.
The 5 largest ethnic groups in Old Westbury are 67.6% White, 7.3% Black or African American, 15.6% Asian, 0% American Indian and 0% Native Hawaiian, with 7.8% of the population identifying as Hispanic or Latino. Of note, 64.3% of households reported speaking English only, while 5.7% reported speaking Spanish only. Additionally, 24.9% of residents were classified as foreign-born. The Old Westbury racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.
Regions characterized by lower-than-average population density, such as Old Westbury, offer a chance for a more relaxed lifestyle, deeper connection to nature, vibrant community bonds, enhanced affordability, and heightened safety, making them enticing options for those seeking refuge from the frenetic pace of urban life. These areas often boast a more budget-friendly cost of living, with housing prices typically more affordable and residents may benefit from reduced taxes, living expenses, and insurance rates. Low population density areas often exhibit lower crime rates than densely populated urban regions, fostering a greater sense of safety and security for residents and their families. The Old Westbury population density is 558 people per square mile, which ranks below 50% of cities nationwide, presenting ample opportunities to enjoy these exceptional benefits.
Policy Planning: At various levels of government and within organizations and businesses, demographic data and statistics serve as essential tools for guiding policy and decision-making processes. Through the examination and interpretation of Old Westbury demographic stats and data, policymakers, government officials, and organizational leaders can pinpoint areas requiring attention, allocate resources judiciously and design policies and initiatives tailored to the specific needs and preferences of distinct demographic segments. The utilization of Old Westbury demographic data plays a pivotal role in policy formulation by informing resource allocation, facilitating evidence-based decision-making, identifying key priorities, predicting future trends, assessing policy effectiveness, and advancing principles of equity and inclusivity. Through effective utilization of this data, policymakers can craft policies that are targeted, efficient, and responsive to the diverse needs of communities.
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 Old Westbury 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.
Understanding Populations: Analyzing and interpreting the Old Westbury 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 Old Westbury 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.

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| Race | Old Westbury | New York | National |
| White | 67.61% | 64.31% | 73.35% |
| Black | 7.34% | 15.60% | 12.63% |
| Asian | 15.61% | 8.12% | 5.22% |
| American Indian | 0.00% | 0.38% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 7.06% | 2.93% | 3.06% |
| Other race | 2.38% | 8.62% | 4.75% |