| Statistic | Thornwood | New York | National |
| Population | 4,636 | 20,171,207 | 336,919,644 |
| Population density (sq mi) | 4,242 | 428 | 91 |
| Median age | 37.2 | 38.2 | 37.7 |
| Male/Female ratio | 1.0:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 65% | 52% | 55% |
| Families w/ Kids under 18 | 48% | 43% | 43% |
| Speak English | 87% | 70% | 79% |
| Speak Spanish | 6% | 15% | 13% |

Thornwood demographics provide invaluable insights into the composition, dynamics and needs of urban and rural areas, enabling them to plan, develop, and govern in ways that promote prosperity, equity and well-being for all residents. The Thornwood population is 4,636 and has a population density of 4,242 people per square mile, compared to the national average of 91. The median age of all residents is 37.2, 65% of people 15 years of age or older are married and 48% have kids under the age of 18. In Thornwood, 6% of households have a median income that is below $25,000 and 57% of households report a median income above $150,000.
The Thornwood 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 Thornwood is 89.4% White, 3.4% Black or African American, 4.4% Asian, 0% American Indian and 0% Native Hawaiian - 11.3% of the population identify as Hispanic or Latino. Of all households, 87.4% reported speaking English only, while 6% reported speaking Spanish only. A total of 11.4% of residents were considered foreign born.
Areas with a high population density tend to support a wide range of amenities and services within walking distance or a short commute. Residents tend to have convenient access to healthcare facilities, educational institutions, cultural venues, restaurants, shops and public transportation options, enhancing their quality of life and overall well-being. The Thornwood population density is 4,242 people per square mile, which is well-above the national average of 91 and is considered one of the most densely populated cities in the country.
Social Cohesion: The examination and interpretation of demographics are pivotal for nurturing social cohesion and promoting understanding among diverse communities. By acknowledging and honoring differences in Thornwood demographics, societies can champion inclusivity, diversity and social cohesion while addressing social disparities and advocating for equitable opportunities. Racial demographics can potentially showcase the diversity of a population and are crucial for fostering inclusive and embracing communities. Embracing diversity fortifies social bonds, fosters cultural appreciation and enriches society by celebrating the contributions of individuals from diverse racial and ethnic backgrounds.
Urban Development: Urban planners could use Thornwood 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 Thornwood demographics for planning and development of affordable housing can help prevent displacement.
Education Allocation: In education planning, Thornwood demographic data can be invaluable for identifying student demographics, school enrollment trends and educational needs. This data aids schools and policymakers in resource allocation and the formulation of effective educational programs. It serves as a crucial tool for recognizing disparities in educational access and outcomes among different demographic groups, including racial and ethnic minorities, socio-economic status and students with disabilities. Through the disaggregation of data by demographic factors, education planners can pinpoint areas of inequity and implement targeted interventions to enhance access, support, and outcomes for marginalized students. Overall, Thornwood demographic data can be an essential tool in education for promoting equity, facilitating student success, and nurturing inclusive learning environments that cater to the needs of all students.
| Race | Thornwood | New York | National |
| White | 89.36% | 64.31% | 73.35% |
| Black | 3.39% | 15.60% | 12.63% |
| Asian | 4.37% | 8.12% | 5.22% |
| American Indian | 0.00% | 0.38% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 0.00% | 2.93% | 3.06% |
| Other race | 2.88% | 8.62% | 4.75% |