| Statistic | Mountainside | New Jersey | National |
| Population | 6,859 | 8,882,190 | 328,239,523 |
| Population density (sq mi) | 1,716 | 1,215 | 91 |
| Median age | 52.1 | 39.5 | 37.7 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 78% | 56% | 55% |
| Families w/ Kids under 18 | 39% | 45% | 43% |
| Speak English | 80% | 69% | 79% |
| Speak Spanish | 8% | 16% | 13% |
Understanding the demographics of Mountainside 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 Mountainside population is 6,859, with a population density of 1,716 people per square mile, diverging from the national average of 91. The median age is 52.1, and 78% of individuals aged 15 or older are married, while 39% have children under 18. As far as income equality in Mountainside, 3% of households have a median income below $25,000, whereas 49% report an income exceeding $150,000, indicating a varied economic landscape within the area.
The 5 largest ethnic groups in Mountainside are 82.2% White, 1.7% Black or African American, 9.5% Asian, 0% American Indian and 0% Native Hawaiian, with 13% of the population identifying as Hispanic or Latino. Of note, 79.6% of households reported speaking English only, while 7.7% reported speaking Spanish only. Additionally, 16.2% of residents were classified as foreign-born. The Mountainside racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.
Mountainside has a population density that is well above-average, which plays a pivotal role in promoting environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Its compact urban development encourages energy-efficient buildings, active transportation modes like walking and cycling and the utilization of public transit, fostering sustainable lifestyles and mitigating environmental impact. Additionally, the area's dense population contributes to a vibrant social and cultural scene, featuring a diverse array of cultural events, festivals and community activities. This cultural diversity fuels creativity, innovation and cross-cultural exchange, enhancing the community's social fabric. Mountainside has a population density of 1,716 people per square mile, exceeding the national average of 91 and positions itself in a good spot to reap the benefits of densely populated areas.
Urban Development: By leveraging demographic data in Mountainside, urban planners can tailor areas to meet the needs of any resident across housing, transportation and public services, all while fostering sustainability and elevating quality of life. Demographic changes can fuel gentrification and neighborhood transformation, whether in urban or rural settings. As neighborhoods attract newcomers with varying income levels and lifestyle preferences, property values may appreciate, potentially displacing established residents and reshaping the neighborhood's fabric. A nuanced understanding of population density, age distribution, household size and income levels is pivotal for guiding decisions on zoning, transportation infrastructure, housing development and public amenities. Utilizing the demographic data in planning and implementing affordable housing initiatives can help mitigate displacement risks and promote inclusive communities.
Healthcare Planning: The examination of Mountainside demographics can potentially inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. By comprehending demographic trends, healthcare providers and policymakers can allocate resources effectively, develop prevention and intervention programs, and address health inequities within communities. Through the utilization of demographic statistics, healthcare providers and policymakers aim to achieve 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 the diverse needs of populations.
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 Mountainside 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.
| Race | Mountainside | New Jersey | National |
| White | 82.21% | 68.15% | 73.35% |
| Black | 1.73% | 13.54% | 12.63% |
| Asian | 9.51% | 9.19% | 5.22% |
| American Indian | 0.00% | 0.21% | 0.82% |
| Native Hawaiian | 0.00% | 0.03% | 0.18% |
| Mixed race | 5.73% | 2.53% | 3.06% |
| Other race | 0.82% | 6.35% | 4.75% |
Here are the best places to live in New Jersey
10 best cities to buy a new house in New Jersey
See the best places to live in & around Mountainside
These are the 10 most affordable cities in New Jersey