| Statistic | Quincy | Massachusetts | National |
| Population | 96,803 | 7,120,135 | 336,919,644 |
| Population density (sq mi) | 5,842 | 913 | 91 |
| Median age | 38.5 | 39.4 | 37.7 |
| Male/Female ratio | 1.0:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 51% | 53% | 55% |
| Families w/ Kids under 18 | 36% | 43% | 43% |
| Speak English | 62% | 77% | 79% |
| Speak Spanish | 2% | 9% | 13% |

Quincy 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 Quincy population is 96,803 and has a population density of 5,842 people per square mile, compared to the national average of 91. The median age of all residents is 38.5, 51% of people 15 years of age or older are married and 36% have kids under the age of 18. In Quincy, 16% of households have a median income that is below $25,000 and 27% of households report a median income above $150,000.
The 5 largest ethnic groups in Quincy are 60% White, 5.7% Black or African American, 29.8% Asian, 0.3% American Indian and 0.1% Native Hawaiian, with 3.8% of the population identifying as Hispanic or Latino. Of note, 62% of households reported speaking English only, while 2.5% reported speaking Spanish only. Additionally, 32.9% of residents were classified as foreign-born. The Quincy racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.
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 Quincy population density is 5,842 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.
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 Quincy 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 Quincy 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.
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 Quincy 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.
Understanding Populations: Reporting and analyzing the demographic data in Quincy 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. Quincy population data serves as a foundation for addressing social, economic, and environmental challenges and promoting the well-being and resilience of societies.
| Race | Quincy | Massachusetts | National |
| White | 60.02% | 79.26% | 73.35% |
| Black | 5.72% | 7.26% | 12.63% |
| Asian | 29.77% | 6.11% | 5.22% |
| American Indian | 0.28% | 0.21% | 0.82% |
| Native Hawaiian | 0.14% | 0.03% | 0.18% |
| Mixed race | 2.92% | 3.01% | 3.06% |
| Other race | 1.17% | 4.13% | 4.75% |