| Statistic | Watertown | South Dakota | National |
| Population | 22,249 | 884,659 | 328,239,523 |
| Population density (sq mi) | 1,224 | 12 | 91 |
| Median age | 37.6 | 36.8 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 58% | 59% | 55% |
| Families w/ Kids under 18 | 47% | 44% | 43% |
| Speak English | 97% | 94% | 79% |
| Speak Spanish | 1% | 2% | 13% |
The demographics of Watertown offer invaluable insights into the composition, dynamics and needs of both urban and rural areas, empowering planners, developers and policymakers to foster prosperity, equity, and well-being for all residents. With a population of 22,249, Watertown exhibits a population density of 1,224 people per square mile, contrasting with the national average of 91. The median age stands at 37.6, with 58% of individuals aged 15 or older being married and 47% having children under 18. In terms of income equality in Watertown, 20% of households report a median income below $25,000, while 11% report an income exceeding $150,000, showcasing a diverse economic landscape.
The 5 largest ethnic groups in Watertown are 92.9% White, 0.7% Black or African American, 0.5% Asian, 2.8% American Indian and 0% Native Hawaiian, with 3.5% of the population identifying as Hispanic or Latino. Of note, 96.5% of households reported speaking English only, while 0.9% reported speaking Spanish only. Additionally, 2.5% of residents were classified as foreign-born. The Watertown racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.
Communities such as Watertown, with population densities higher than the average, play a significant role in promoting environmental sustainability by decreasing per capita energy consumption, greenhouse gas emissions and land use. Their compact urban development encourages the adoption of energy-efficient buildings, walking, cycling, and public transportation, fostering sustainable lifestyles and minimizing environmental impact. Additionally, densely populated areas tend to cultivate vibrant social and cultural scenes, fueled by a diverse population that contributes to a myriad of cultural events, festivals and community activities. This cultural diversity sparks creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. Watertown has a population density of 1,224, surpassing the national average of 91 people per square mile, as it stands poised to reap the benefits of dense urban living.
Understanding Populations: Analyzing and interpreting the Watertown 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 Watertown 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.
Urban Development: Urban planners could use Watertown demographic data to design and create areas that accommodate the needs of residents, including housing, transportation and public services, while promoting sustainability and quality of life. Demographic shifts can contribute to gentrification and neighborhood change in urban or rural areas. As neighborhoods attract new residents with different income levels and lifestyle preferences, property values may rise, leading to displacement of long-time residents and changes in the character and identity of the neighborhood. Understanding population density, age distribution, household size and income levels helps inform decisions related to zoning, transportation infrastructure, housing development and public amenities. Lastly, using Watertown demographics for planning and development of affordable housing can help prevent displacement.
Healthcare Planning: An analysis of Watertown demographics can inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. Understanding demographic trends allows healthcare providers and policymakers to allocate resources effectively, develop prevention and intervention programs and address health inequities within communities. Leveraging demographic data, healthcare providers, and policymakers strive 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 customized healthcare services to meet the diverse needs of populations.
| Race | Watertown | South Dakota | National |
| White | 92.88% | 84.77% | 73.35% |
| Black | 0.75% | 1.65% | 12.63% |
| Asian | 0.49% | 1.33% | 5.22% |
| American Indian | 2.85% | 8.72% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 2.66% | 2.61% | 3.06% |
| Other race | 0.39% | 0.88% | 4.75% |
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