| Statistic | Wantagh | New York | National |
| Population | 17,950 | 20,171,207 | 336,919,644 |
| Population density (sq mi) | 4,687 | 428 | 91 |
| Median age | 40.8 | 38.2 | 37.7 |
| Male/Female ratio | 1.0:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 64% | 52% | 55% |
| Families w/ Kids under 18 | 45% | 43% | 43% |
| Speak English | 92% | 70% | 79% |
| Speak Spanish | 3% | 15% | 13% |

The demographics of Wantagh 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 17,950, Wantagh exhibits a population density of 4,687 people per square mile, contrasting with the national average of 91. The median age stands at 40.8, with 64% of individuals aged 15 or older being married and 45% having children under 18. In terms of income equality in Wantagh, 7% of households report a median income below $25,000, while 61% report an income exceeding $150,000, showcasing a diverse economic landscape.
Recognizing the racial demographics and ethnicity breakdown of Wantagh is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Wantagh, the racial breakdown comprises 95% White, 0.5% Black or African American, 1.1% Asian, 0% American Indian, and 0% Native Hawaiian, with 6.7% of the population identifying as Hispanic or Latino. 91.6% of households reported speaking English only, while 3.3% reported speaking Spanish only. Furthermore, 6.6% of residents were categorized as foreign-born.
The Wantagh population density comes in at 4,687 people per square mile, which makes it one of the most densely populated areas in the country, far surpassing the national average of 91. Areas characterized by high population density often boast an abundance of amenities and services within close proximity, providing residents with convenient access to healthcare, education, cultural attractions, dining establishments, retail outlets and transportation options. This accessibility could potentially enhance residents' overall quality of life and well-being.
Understanding Populations: Reporting and analyzing the demographic data in Wantagh can allow us to gain insights into the characteristics and composition of populations, including age, gender, race, ethnicity, income, education and other socio-economic factors. This understanding is essential for addressing the diverse needs, preferences and challenges of different demographic groups within communities. Demographics can play a crucial role in understanding populations, informing decision-making processes and promoting equity, inclusion, and well-being for all individuals and communities. Wantagh population data serves as a foundation for addressing social, economic, and environmental challenges and promoting the well-being and resilience of societies.
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 Wantagh 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 Wantagh 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.
Urban Development: Urban planners can leverage demographics data in Wantagh 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 Wantagh demographics data into planning and implementing affordable housing initiatives can help mitigate displacement risks.

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| Race | Wantagh | New York | National |
| White | 94.99% | 64.31% | 73.35% |
| Black | 0.46% | 15.60% | 12.63% |
| Asian | 1.08% | 8.12% | 5.22% |
| American Indian | 0.00% | 0.38% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 2.15% | 2.93% | 3.06% |
| Other race | 1.32% | 8.62% | 4.75% |