| Statistic | Princeton | Illinois | National |
| Population | 7,860 | 13,081,969 | 336,919,644 |
| Population density (sq mi) | 978 | 236 | 91 |
| Median age | 47.8 | 37.4 | 37.7 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 59% | 55% | 55% |
| Families w/ Kids under 18 | 42% | 44% | 43% |
| Speak English | 98% | 77% | 79% |
| Speak Spanish | 1% | 13% | 13% |

The population of Princeton is 7,860, with a population density of 978 people per square mile, diverging from the national average of 91. The median age is 47.8 and 59% of individuals aged 15 or older are married, while 42% have children under 18. As far as income equality in Princeton goes, 21% of households have a median income below $25,000, whereas 9% report an income exceeding $150,000. The Princeton demographics data can provide indispensable insights into the composition, dynamics and needs of cities, towns or even villages, empowering planners, developers and policymakers to devise strategies that foster prosperity, equity and well-being for all residents.
The Princeton 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 Princeton is 97.6% White, 0.1% Black or African American, 0% Asian, 0.1% American Indian and 0% Native Hawaiian - 5.4% of the population identify as Hispanic or Latino. Of all households, 97.6% reported speaking English only, while 1% reported speaking Spanish only. A total of 2.3% of residents were considered foreign born.
Princeton could serve as a prime example of how areas with higher-than-average population density can champion environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Embracing compact urban development, these densely populated areas promote energy-efficient buildings and encourages walking, cycling and public transit use, fostering sustainable lifestyles and minimizing environmental impact. Moreover, densely populated regions are renowned for their vibrant social and cultural scenes, driven by a diverse population that organizes an array of cultural events, festivals and community activities. This cultural diversity ignites creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. The Princeton population density is 978, surpassing the national average of 91 per square miles, positioning itself to capitalize on the advantages of dense urban living.
Urban Development: Urban planners could use Princeton 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 Princeton demographics for planning and development of affordable housing can help prevent displacement.
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 Princeton 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 Princeton 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.
Education Allocation: Princeton demographics can play a pivotal role in guiding education planning, offering insights into student demographics, school enrollment patterns, and educational requirements. This data aids schools and policymakers in resource allocation and the development of effective educational programs. It serves as a critical tool for identifying disparities in educational access and outcomes among diverse demographic groups, such as 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. Ultimately, Princeton demographic data is indispensable in education for advancing equity, fostering student achievement, and cultivating inclusive learning environments tailored to the needs of all students.
| Race | Princeton | Illinois | National |
| White | 97.63% | 72.14% | 73.35% |
| Black | 0.07% | 14.30% | 12.63% |
| Asian | 0.01% | 5.10% | 5.22% |
| American Indian | 0.14% | 0.23% | 0.82% |
| Native Hawaiian | 0.00% | 0.03% | 0.18% |
| Mixed race | 1.42% | 2.34% | 3.06% |
| Other race | 0.72% | 5.86% | 4.75% |