| Statistic | Shirley | New York | National |
| Population | 29,314 | 20,171,207 | 336,919,644 |
| Population density (sq mi) | 2,642 | 428 | 91 |
| Median age | 38.3 | 38.2 | 37.7 |
| Male/Female ratio | 0.9:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 54% | 52% | 55% |
| Families w/ Kids under 18 | 40% | 43% | 43% |
| Speak English | 80% | 70% | 79% |
| Speak Spanish | 14% | 15% | 13% |

The population in Shirley is 29,314, while the population density is 2,642 people per square mile, contrasting with the national average of 91. The median age stands at 38.3, with 54% of individuals aged 15 or older being married and 40% having children under 18. In terms of household income equality in Shirley, 10% of households report a median income below $25,000, while 37% report an income exceeding $150,000. The Shirley demographics data can provide invaluable insight into the composition, dynamics and needs of urban and rural areas, enabling planners, developers and policymakers to strategize effectively for the promotion of prosperity, equity and well-being for all residents in the area.
Understanding the Shirley racial demographics and ethnic composition is paramount for addressing systemic inequities, advancing social justice and inclusion and fortifying communities. In Shirley, the racial breakdown indicates 83.9% White, 7.5% Black or African American, 4.4% Asian, 0.1% American Indian and 0% Native Hawaiian, with 18.9% of the population identifying as Hispanic or Latino. Notably, 79.9% of households reported speaking English only, while 14% reported speaking Spanish only. Additionally, 10.9% of residents were categorized as foreign-born.
High population density areas typically offer a diverse array of amenities and services within walking distance or a short commute, enriching residents' quality of life and well-being. Accessible healthcare facilities, educational institutions, cultural venues, restaurants, shopping and public transportation options contribute to the convenience and vibrancy of these communities. The population density of of Shirley is 2,642 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the nation.
Urban Development: Urban planners could use Shirley demographic data to design and create areas that accommodate the needs of residents, including housing, transportation and public services, while promoting sustainability and quality of life. Demographic shifts can contribute to gentrification and neighborhood change in urban or rural areas. As neighborhoods attract new residents with different income levels and lifestyle preferences, property values may rise, leading to displacement of long-time residents and changes in the character and identity of the neighborhood. Understanding population density, age distribution, household size and income levels helps inform decisions related to zoning, transportation infrastructure, housing development and public amenities. Lastly, using Shirley demographics for planning and development of affordable housing can help prevent displacement.
Policy Planning: Demographic data and statistics serve as valuable tools for guiding policy and decision-making processes across government entities, organizations, and businesses. Through the analysis and interpretation of Shirley demographics, policymakers, government officials and organizational leaders can identify areas requiring attention, allocate resources strategically and develop policies and initiatives that cater to the unique needs and preferences of various demographic groups. Shirley demographic statistics can play a critical role in policy planning by informing resource allocation, enabling evidence-based decision-making, identifying priority areas, forecasting future trends, monitoring policy outcomes and fostering equity and inclusivity. By harnessing this data effectively, policymakers can craft policies that are targeted, efficient and equitable, thereby addressing the diverse needs of communities.
Healthcare Planning: The examination of Shirley demographics can potentially inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. By comprehending demographic trends, healthcare providers and policymakers can allocate resources effectively, develop prevention and intervention programs, and address health inequities within communities. Through the utilization of demographic statistics, healthcare providers and policymakers aim to achieve equitable, accessible, and high-quality healthcare for all individuals and communities. This proactive healthcare planning approach ensures targeted interventions, efficient resource allocation and tailored healthcare services to meet the diverse needs of populations.
| Race | Shirley | New York | National |
| White | 83.85% | 64.31% | 73.35% |
| Black | 7.55% | 15.60% | 12.63% |
| Asian | 4.36% | 8.12% | 5.22% |
| American Indian | 0.07% | 0.38% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 2.95% | 2.93% | 3.06% |
| Other race | 1.22% | 8.62% | 4.75% |