| Statistic | Derry | Pennsylvania | National |
| Population | 2,386 | 13,262,738 | 336,919,644 |
| Population density (sq mi) | 3,091 | 296 | 91 |
| Median age | 44.5 | 40.6 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 59% | 56% | 55% |
| Families w/ Kids under 18 | 43% | 40% | 43% |
| Speak English | 99% | 89% | 79% |
| Speak Spanish | 1% | 5% | 13% |

The population of Derry is 2,386, with a population density of 3,091 people per square mile, diverging from the national average of 91. The median age is 44.5 and 59% of individuals aged 15 or older are married, while 43% have children under 18. As far as income equality in Derry goes, 21% of households have a median income below $25,000, whereas 6% report an income exceeding $150,000. The Derry 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 Derry racial demographics and ethnicity breakdown could be indispensable tools for recognizing and rectifying systemic inequities, fostering social justice and inclusion and cultivating resilient communities. In Derry, the racial breakdown reveals 99.7% White, 0% Black or African American, 0% Asian, 0% American Indian and 0% Native Hawaiian, with 0.4% of the population identifying as Hispanic or Latino. Of all households, 98.7% reported speaking English only, while 0.6% reported speaking Spanish only. Moreover, 0% of residents were classified as foreign-born.
High population density areas typically offer a diverse array of amenities and services within walking distance or a short commute, enriching residents' quality of life and well-being. Accessible healthcare facilities, educational institutions, cultural venues, restaurants, shopping and public transportation options contribute to the convenience and vibrancy of these communities. The population density of of Derry is 3,091 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the nation.
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 Derry 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.
Healthcare Planning: By analyzing the Derry demographic data, it can potentially inform healthcare planning and delivery by identifying population health needs, disparities, and risk factors. Understanding demographic trends helps healthcare providers and policymakers allocate resources, develop prevention and intervention programs, and address health inequities within communities. By leveraging demographic data, healthcare providers and policymakers can work towards achieving equitable, accessible, and high-quality healthcare for all individuals and communities. This proactive approach to healthcare planning ensures that interventions are targeted, resources are allocated efficiently, and healthcare services are tailored to meet the diverse needs of populations.
Understanding Populations: Analyzing and interpreting the Derry 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 Derry 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.
| Race | Derry | Pennsylvania | National |
| White | 99.70% | 81.37% | 73.35% |
| Black | 0.00% | 11.03% | 12.63% |
| Asian | 0.00% | 3.14% | 5.22% |
| American Indian | 0.00% | 0.20% | 0.82% |
| Native Hawaiian | 0.00% | 0.03% | 0.18% |
| Mixed race | 0.30% | 2.24% | 3.06% |
| Other race | 0.00% | 1.98% | 4.75% |