| Statistic | Greenville | New York | National |
| Population | 9,476 | 20,171,207 | 336,919,644 |
| Population density (sq mi) | 3,698 | 428 | 91 |
| Median age | 45.3 | 38.2 | 37.7 |
| Male/Female ratio | 0.9:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 67% | 52% | 55% |
| Families w/ Kids under 18 | 44% | 43% | 43% |
| Speak English | 69% | 70% | 79% |
| Speak Spanish | 3% | 15% | 13% |

Understanding the demographics of Greenville 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 Greenville population is 9,476, with a population density of 3,698 people per square mile, diverging from the national average of 91. The median age is 45.3, and 67% of individuals aged 15 or older are married, while 44% have children under 18. As far as income equality in Greenville, 9% of households have a median income below $25,000, whereas 55% report an income exceeding $150,000, indicating a varied economic landscape within the area.
The 5 largest ethnic groups in Greenville are 69.6% White, 1.8% Black or African American, 25.1% Asian, 0.1% American Indian and 0% Native Hawaiian, with 5.5% of the population identifying as Hispanic or Latino. Of note, 68.9% of households reported speaking English only, while 3.1% reported speaking Spanish only. Additionally, 24.4% of residents were classified as foreign-born. The Greenville racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.
High population density areas are renowned for their extensive array of amenities and services, easily accessible to residents within walking distance or a short commute. From healthcare facilities and educational institutions to cultural venues, dining establishments, retail shops and public transportation options, these communities offer convenience and enrichment to their inhabitants. The Greenville population density is 3,698 people per square mile, well above the national average of 91, making it one of the most densely populated cities in the nation.
Urban Development: Greenville demographic statistics are invaluable for urban planners in designing and developing areas that cater to residents' needs, encompassing housing, transportation, and public services, all while fostering sustainability and enhancing quality of life. Shifts in demographics can influence gentrification and neighborhood transformation, whether in urban or rural settings. As neighborhoods attract new residents with varying income levels and lifestyle preferences, property values may increase, potentially displacing long-term residents and altering the neighborhood's character. Analyzing population density, age distribution, household size, and income levels is crucial for guiding decisions regarding zoning, transportation infrastructure, housing expansion and public amenities. Utilizing Greenville demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
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 Greenville 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.
Policy Planning: Demographic data and statistics play a fundamental role in informing policy and decision-making processes across government entities, organizations and businesses. Through the analysis and interpretation of Greenville demographic data, policymakers, government officials, and organizational leaders can pinpoint areas of concern, allocate resources efficiently, and devise policies and initiatives tailored to the specific needs and preferences of distinct demographic groups. The utilization of demographics in Greenville can be crucial in policy planning, facilitating evidence-based decision-making, identifying key priorities, forecasting future trends, monitoring policy outcomes and advancing principles of equity and inclusion. By harnessing this data effectively, policymakers can develop policies that are targeted, effective and inclusive, thus meeting the diverse needs of communities.

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| Race | Greenville | New York | National |
| White | 69.65% | 64.31% | 73.35% |
| Black | 1.84% | 15.60% | 12.63% |
| Asian | 25.06% | 8.12% | 5.22% |
| American Indian | 0.13% | 0.38% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 2.67% | 2.93% | 3.06% |
| Other race | 0.67% | 8.62% | 4.75% |