| Statistic | Leonia | New Jersey | National |
| Population | 9,324 | 9,226,043 | 336,919,644 |
| Population density (sq mi) | 6,122 | 1,255 | 91 |
| Median age | 45.9 | 39.5 | 37.7 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 68% | 56% | 55% |
| Families w/ Kids under 18 | 39% | 45% | 43% |
| Speak English | 48% | 69% | 79% |
| Speak Spanish | 16% | 16% | 13% |

Leonia 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 Leonia population is 9,324 and has a population density of 6,122 people per square mile, compared to the national average of 91. The median age of all residents is 45.9, 68% of people 15 years of age or older are married and 39% have kids under the age of 18. In Leonia, 11% of households have a median income that is below $25,000 and 41% of households report a median income above $150,000.
Understanding the Leonia racial demographics and ethnic composition is paramount for addressing systemic inequities, advancing social justice and inclusion and fortifying communities. In Leonia, the racial breakdown indicates 46.6% White, 2.7% Black or African American, 37.6% Asian, 0.1% American Indian and 0.2% Native Hawaiian, with 22.4% of the population identifying as Hispanic or Latino. Notably, 47.6% of households reported speaking English only, while 15.7% reported speaking Spanish only. Additionally, 40.4% of residents were categorized as foreign-born.
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 Leonia population density is 6,122 people per square mile, well above the national average of 91, making it one of the most densely populated cities in the nation.
Healthcare Planning: Analyzing the demographic data in Leonia has the potential to inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. Healthcare providers and policymakers can allocate resources more effectively, develop prevention and intervention programs and address health inequities within communities by understanding demographic trends. Leveraging demographic statistics can enable healthcare providers and policymakers to strive for 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 diverse population needs.
Policy Planning: Demographic data and statistics serve as vital tools for informing policy and decision-making processes across various levels of government, as well as within organizations and businesses. Through the reporting and analysis of demographic data, policymakers, government officials, and organizational leaders can pinpoint areas of need, allocate resources efficiently, and craft tailored policies and programs to address the unique needs and priorities of different demographic groups. The utilization of demographic data in Leonia is instrumental in policy planning, facilitating resource allocation, evidence-based decision-making, priority identification, trend forecasting, policy impact assessment, and the promotion of equity and inclusion. By harnessing this data effectively, policymakers can devise targeted, impactful, and inclusive policies that cater to the diverse needs of communities.
Understanding Populations: By delving into and analyzing the Leonia demographic stats, we can uncover insightful details regarding the composition and attributes of populations, spanning age, gender, race, ethnicity, income, education and other socio-economic indicators. This comprehension is vital for addressing the diverse needs, preferences and hurdles faced by various demographic groups within communities. Demographics wield significant influence in understanding populations, shaping decision-making processes and championing equity, inclusion, and the overall welfare of all individuals and communities. The Leonia population and demographic data serves as a cornerstone for tackling social, economic and environmental challenges, while simultaneously nurturing the well-being and resilience of societies.

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| Race | Leonia | New Jersey | National |
| White | 46.56% | 68.15% | 73.35% |
| Black | 2.74% | 13.54% | 12.63% |
| Asian | 37.60% | 9.19% | 5.22% |
| American Indian | 0.08% | 0.21% | 0.82% |
| Native Hawaiian | 0.22% | 0.03% | 0.18% |
| Mixed race | 10.62% | 2.53% | 3.06% |
| Other race | 2.19% | 6.35% | 4.75% |