| Statistic | Eureka | California | National |
| Population | 26,938 | 39,512,223 | 328,239,523 |
| Population density (sq mi) | 2,825 | 256 | 91 |
| Median age | 38.6 | 36.0 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 40% | 52% | 55% |
| Families w/ Kids under 18 | 42% | 46% | 43% |
| Speak English | 85% | 56% | 79% |
| Speak Spanish | 8% | 29% | 13% |
The demographics of Eureka 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 26,938, Eureka exhibits a population density of 2,825 people per square mile, contrasting with the national average of 91. The median age stands at 38.6, with 40% of individuals aged 15 or older being married and 42% having children under 18. In terms of income equality in Eureka, 30% of households report a median income below $25,000, while 11% report an income exceeding $150,000, showcasing a diverse economic landscape.
Understanding the Eureka racial demographics and ethnic composition is paramount for addressing systemic inequities, advancing social justice and inclusion and fortifying communities. In Eureka, the racial breakdown indicates 72.9% White, 2.3% Black or African American, 6.2% Asian, 1.7% American Indian and 0.2% Native Hawaiian, with 15.6% of the population identifying as Hispanic or Latino. Notably, 85.1% of households reported speaking English only, while 8.3% reported speaking Spanish only. Additionally, 7.6% of residents were categorized as 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. Eureka has a population density of 2,825 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the country.
Understanding Populations: By delving into and analyzing the Eureka demographic stats, we can uncover insightful details regarding the composition and attributes of populations, spanning age, gender, race, ethnicity, income, education and other socio-economic indicators. This comprehension is vital for addressing the diverse needs, preferences and hurdles faced by various demographic groups within communities. Demographics wield significant influence in understanding populations, shaping decision-making processes and championing equity, inclusion, and the overall welfare of all individuals and communities. The Eureka population and demographic data serves as a cornerstone for tackling social, economic and environmental challenges, while simultaneously nurturing the well-being and resilience of societies.
Urban Development: Urban planners could use Eureka 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 Eureka demographics for planning and development of affordable housing can help prevent displacement.
Social Cohesion: Analyzing demographics is vital for nurturing social cohesion and fostering understanding among diverse communities. By embracing and respecting variations in Eureka 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 | Eureka | California | National |
| White | 72.91% | 61.26% | 73.35% |
| Black | 2.30% | 5.85% | 12.63% |
| Asian | 6.20% | 13.85% | 5.22% |
| American Indian | 1.67% | 0.74% | 0.82% |
| Native Hawaiian | 0.23% | 0.39% | 0.18% |
| Mixed race | 10.16% | 4.62% | 3.06% |
| Other race | 6.54% | 13.28% | 4.75% |
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