| Statistic | San Mateo | California | National |
| Population | 103,619 | 39,512,223 | 328,239,523 |
| Population density (sq mi) | 8,539 | 256 | 91 |
| Median age | 37.8 | 36.0 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 58% | 52% | 55% |
| Families w/ Kids under 18 | 43% | 46% | 43% |
| Speak English | 57% | 56% | 79% |
| Speak Spanish | 18% | 29% | 13% |
San Mateo 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 San Mateo population is 103,619 and has a population density of 8,539 people per square mile, compared to the national average of 91. The median age of all residents is 37.8, 58% of people 15 years of age or older are married and 43% have kids under the age of 18. In San Mateo, 11% of households have a median income that is below $25,000 and 50% of households report a median income above $150,000.
The San Mateo 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 San Mateo is 50.2% White, 2.2% Black or African American, 24.3% Asian, 0.6% American Indian and 2.3% Native Hawaiian - 24.5% of the population identify as Hispanic or Latino. Of all households, 57.4% reported speaking English only, while 18.2% reported speaking Spanish only. A total of 35% of residents were considered foreign born.
High population density areas are renowned for their extensive array of amenities and services, easily accessible to residents within walking distance or a short commute. From healthcare facilities and educational institutions to cultural venues, dining establishments, retail shops and public transportation options, these communities offer convenience and enrichment to their inhabitants. The San Mateo population density is 8,539 people per square mile, well above the national average of 91, making it one of the most densely populated cities in the nation.
Education Allocation: In education planning, San Mateo 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, San Mateo 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.
Social Cohesion: The analysis and understanding of demographics are essential for promoting social cohesion and fostering appreciation among diverse communities. By embracing and acknowledging differences in San Mateo demographics, societies can promote inclusivity, diversity and social harmony while addressing social inequalities and advocating for equal opportunities. Racial demographics can reflect the diversity within a population and are instrumental in fostering inclusive and welcoming communities. Embracing ethnic diversity strengthens social connections, promotes cultural understanding and enriches society by celebrating the contributions of individuals from diverse racial and ethnic backgrounds.
Understanding Populations: By reporting and analyzing San Mateo demographics, we can acquire valuable insights into the makeup and traits of populations, encompassing age, gender, race, ethnicity, income, education and various socio-economic factors. This comprehension is vital for tackling the varied needs, preferences, and obstacles encountered by different demographic groups within communities. Demographics serve a pivotal role in comprehending populations, guiding decision-making processes and advancing equity, inclusion and overall well-being for all individuals and communities. The San Mateo population data serves as a cornerstone for addressing social, economic and environmental challenges, while also fostering the well-being and strength of communities.
| Race | San Mateo | California | National |
| White | 50.17% | 61.26% | 73.35% |
| Black | 2.20% | 5.85% | 12.63% |
| Asian | 24.35% | 13.85% | 5.22% |
| American Indian | 0.59% | 0.74% | 0.82% |
| Native Hawaiian | 2.33% | 0.39% | 0.18% |
| Mixed race | 8.18% | 4.62% | 3.06% |
| Other race | 12.18% | 13.28% | 4.75% |
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