| Statistic | Derry | Pennsylvania | National |
| Population | 2,317 | 12,801,989 | 328,239,523 |
| Population density (sq mi) | 3,002 | 287 | 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% |
Derry 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 Derry population is 2,317 and has a population density of 3,002 people per square mile, compared to the national average of 91. The median age of all residents is 44.5, 59% of people 15 years of age or older are married and 43% have kids under the age of 18. In Derry, 21% of households have a median income that is below $25,000 and 6% of households report a median income above $150,000.
The Derry 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 Derry is 99.7% White, 0% Black or African American, 0% Asian, 0% American Indian and 0% Native Hawaiian - 0.4% of the population identify as Hispanic or Latino. Of all households, 98.7% reported speaking English only, while 0.6% reported speaking Spanish only. A total of 0% of residents were considered foreign born.
In areas with high population density, residents enjoy a wealth of amenities and services conveniently located within walking distance or a short commute. Access to healthcare facilities, educational institutions, cultural venues, dining options, retail stores and public transit enhances residents' quality of life and overall well-being. Derry has a population density of 3,002 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the country.
Urban Development: Urban planners can leverage demographics data in Derry to design and develop areas that cater to residents' needs, spanning housing, transportation, and public services, while prioritizing sustainability and enhancing quality of life. Demographic changes can contribute to gentrification and neighborhood evolution, whether in urban or rural contexts. As neighborhoods attract new residents with diverse income levels and lifestyle preferences, property values may appreciate, potentially displacing longstanding residents and reshaping the neighborhood's identity. Understanding population density, age distribution, household size and income levels is essential for guiding decisions on zoning, transportation infrastructure, housing development and public amenities. Incorporating Derry demographics data into planning and implementing affordable housing initiatives can help mitigate displacement risks.
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.
Social Cohesion: Analyzing demographics is vital for nurturing social cohesion and fostering understanding among diverse communities. By embracing and respecting variations in Derry demographics, societies can advance inclusivity, diversity and social unity while combatting social inequalities and advocating for equal opportunities. Racial demographics mirror the diversity within a population and can be instrumental in cultivating inclusive and inviting communities. Embracing diversity strengthens social bonds, fosters cultural appreciation and enriches society by acknowledging the contributions of individuals from various racial and ethnic backgrounds.
| 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% |
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