Statistic Mercer Island Washington National
Population 25,820 7,614,893 328,239,523
Population density (sq mi) 4,045 117 91
Median age 45.9 37.6 37.7
Male/Female ratio 0.9:1 1.0:1 1.0:1
Married (15yrs & older) 70% 56% 55%
Families w/ Kids under 18 49% 44% 43%
Speak English 78% 81% 79%
Speak Spanish 3% 8% 13%

Overview of Mercer Island Demographics

Mercer Island 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 Mercer Island population is 25,820 and has a population density of 4,045 people per square mile, compared to the national average of 91. The median age of all residents is 45.9, 70% of people 15 years of age or older are married and 49% have kids under the age of 18. In Mercer Island, 7% of households have a median income that is below $25,000 and 56% of households report a median income above $150,000.

Mercer Island Racial Demographics & Ethnicity

The Mercer Island 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 Mercer Island, the racial breakdown reveals 71.5% White, 0.9% Black or African American, 19.8% Asian, 0.1% American Indian and 0.1% Native Hawaiian, with 3.5% of the population identifying as Hispanic or Latino. Of all households, 77.9% reported speaking English only, while 3% reported speaking Spanish only. Moreover, 22.3% of residents were classified as foreign-born.

Mercer Island Population Density

The Mercer Island population density comes in at 4,045 people per square mile, which makes it one of the most densely populated areas in the country, far surpassing the national average of 91. Areas characterized by high population density often boast an abundance of amenities and services within close proximity, providing residents with convenient access to healthcare, education, cultural attractions, dining establishments, retail outlets and transportation options. This accessibility could potentially enhance residents' overall quality of life and well-being.

Why are Demographics Important?

Education Allocation: In education planning, Mercer Island demographic data can be invaluable for identifying student demographics, school enrollment trends and educational needs. This data aids schools and policymakers in resource allocation and the formulation of effective educational programs. It serves as a crucial tool for recognizing disparities in educational access and outcomes among different demographic groups, including racial and ethnic minorities, socio-economic status and students with disabilities. Through the disaggregation of data by demographic factors, education planners can pinpoint areas of inequity and implement targeted interventions to enhance access, support, and outcomes for marginalized students. Overall, Mercer Island demographic data can be an essential tool in education for promoting equity, facilitating student success, and nurturing inclusive learning environments that cater to the needs of all students.

Healthcare Planning: An analysis of Mercer Island 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.

Policy Planning: Demographic data and statistics play a fundamental role in informing policy and decision-making processes across government entities, organizations and businesses. Through the analysis and interpretation of Mercer Island demographic data, policymakers, government officials, and organizational leaders can pinpoint areas of concern, allocate resources efficiently, and devise policies and initiatives tailored to the specific needs and preferences of distinct demographic groups. The utilization of demographics in Mercer Island can be crucial in policy planning, facilitating evidence-based decision-making, identifying key priorities, forecasting future trends, monitoring policy outcomes and advancing principles of equity and inclusion. By harnessing this data effectively, policymakers can develop policies that are targeted, effective and inclusive, thus meeting the diverse needs of communities.

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Demographics Quick Facts

  • The population density in Mercer Island is 3358% higher than Washington
  • The median age in Mercer Island is 22% higher than Washington
  • In Mercer Island 71.45% of the population is White
  • In Mercer Island 0.91% of the population is Black
  • In Mercer Island 19.83% of the population is Asian

Compare Mercer Island, WA Demographics

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      Mercer Island racial demographics

      Race Mercer Island Washington National
      White 71.45% 77.34% 73.35%
      Black 0.91% 3.63% 12.63%
      Asian 19.83% 7.80% 5.22%
      American Indian 0.07% 1.33% 0.82%
      Native Hawaiian 0.08% 0.63% 0.18%
      Mixed race 5.96% 5.34% 3.06%
      Other race 1.70% 3.92% 4.75%
      In Mercer Island, 3.5% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Mercer Island age breakdown

      Marital status

      Age of children in married couples

      Source: The Mercer Island, WA demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).