| Statistic | Somersworth | New Hampshire | National |
| Population | 12,381 | 1,399,282 | 336,919,644 |
| Population density (sq mi) | 1,264 | 156 | 91 |
| Median age | 39.2 | 42.4 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 52% | 58% | 55% |
| Families w/ Kids under 18 | 47% | 40% | 43% |
| Speak English | 90% | 92% | 79% |
| Speak Spanish | 1% | 2% | 13% |

The population in Somersworth is 12,381, while the population density is 1,264 people per square mile, contrasting with the national average of 91. The median age stands at 39.2, with 52% of individuals aged 15 or older being married and 47% having children under 18. In terms of household income equality in Somersworth, 13% of households report a median income below $25,000, while 12% report an income exceeding $150,000. The Somersworth demographics data can provide invaluable insight into the composition, dynamics and needs of urban and rural areas, enabling planners, developers and policymakers to strategize effectively for the promotion of prosperity, equity and well-being for all residents in the area.
Understanding the Somersworth racial demographics and ethnic composition is paramount for addressing systemic inequities, advancing social justice and inclusion and fortifying communities. In Somersworth, the racial breakdown indicates 83.5% White, 3.8% Black or African American, 6.6% Asian, 0.1% American Indian and 0% Native Hawaiian, with 4% of the population identifying as Hispanic or Latino. Notably, 90.2% of households reported speaking English only, while 1.3% reported speaking Spanish only. Additionally, 7.7% of residents were categorized as foreign-born.
Somersworth, characterized by above-average population density, 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. The Somersworth population density stands at 1,264, exceeding the national average, at 91 people per square mile, positioning it in a nice position to reap the benefits of densely populated areas.
Urban Development: By leveraging demographic data in Somersworth, 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.
Understanding Populations: Analyzing and interpreting the Somersworth demographic data provides us with valuable insights into the characteristics and composition of populations, encompassing age, gender, race, ethnicity, income, education and other socio-economic variables. This understanding is crucial for addressing the diverse needs, preferences and challenges encountered by various demographic groups within communities. Demographics play a crucial role in understanding populations, informing decision-making processes, and advancing equity, inclusion, and overall well-being for all individuals and communities. The Somersworth population and demographic data serves as a foundation for addressing social, economic and environmental challenges, while also nurturing the well-being and resilience of societies.
Policy Planning: Demographic data and statistics can inform policy and decision-making processes at various levels of government, as well as in organizations and businesses. By reporting and analyzing Somersworth demographics data, policymakers, government officials and organizational leaders can identify areas of need, allocate resources effectively and develop targeted policies and programs that address the specific needs and priorities of different demographic groups. Somersworth demographics can play a crucial role in policy planning by informing resource allocation, evidence-based decision making, identifying priorities, forecasting future trends, monitoring policy impact and promoting equity and inclusion. By leveraging this data effectively, policymakers can develop policies that are targeted, effective and responsive to the needs of diverse communities.
| Race | Somersworth | New Hampshire | National |
| White | 83.48% | 93.68% | 73.35% |
| Black | 3.76% | 1.32% | 12.63% |
| Asian | 6.60% | 2.42% | 5.22% |
| American Indian | 0.11% | 0.16% | 0.82% |
| Native Hawaiian | 0.00% | 0.02% | 0.18% |
| Mixed race | 5.87% | 1.88% | 3.06% |
| Other race | 0.18% | 0.54% | 4.75% |