Statistic San Marcos Texas National
Population 64,053 28,995,881 328,239,523
Population density (sq mi) 1,766 113 91
Median age 25.1 34.2 37.7
Male/Female ratio 0.9:1 1.0:1 1.0:1
Married (15yrs & older) 30% 56% 55%
Families w/ Kids under 18 36% 48% 43%
Speak English 72% 65% 79%
Speak Spanish 24% 30% 13%

Overview of San Marcos Demographics

The population in San Marcos is 64,053, while the population density is 1,766 people per square mile, contrasting with the national average of 91. The median age stands at 25.1, with 30% of individuals aged 15 or older being married and 36% having children under 18. In terms of household income equality in San Marcos, 33% of households report a median income below $25,000, while 8% report an income exceeding $150,000. The San Marcos demographics data can provide invaluable insight into the composition, dynamics and needs of urban and rural areas, enabling planners, developers and policymakers to strategize effectively for the promotion of prosperity, equity and well-being for all residents in the area.

San Marcos Racial Demographics & Ethnicity

The 5 largest ethnic groups in San Marcos are 78.8% White, 6% Black or African American, 2.8% Asian, 0.2% American Indian and 0.1% Native Hawaiian, with 41.7% of the population identifying as Hispanic or Latino. Of note, 72.1% of households reported speaking English only, while 23.6% reported speaking Spanish only. Additionally, 9% of residents were classified as foreign-born. The San Marcos racial demographics and ethnicity breakdown are essential for comprehending and addressing systemic inequities, advancing social justice and inclusion and cultivating resilient communities.

San Marcos Population Density

Communities such as San Marcos, 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. San Marcos has a population density of 1,766, surpassing the national average of 91 people per square mile, as it stands poised to reap the benefits of dense urban living.

Why are Demographics Important?

Education Allocation: San Marcos demographic data can help guide education planning by identifying student demographics, school enrollment trends and educational needs, helping schools and policymakers allocate resources and develop effective educational programs. It can be an essential tool for identifying disparities in educational access and outcomes among different demographic groups, such as racial and ethnic minorities, socio-economic status, or students with disabilities. By disaggregating data by demographic factors, education planners can identify areas of inequity and develop targeted interventions to improve access, support and outcomes for marginalized students. Overall, San Marcos demographic data is invaluable in education for promoting equity, supporting student success, and fostering inclusive learning environments that meet the needs of all students.

Healthcare Planning: Analyzing the demographic data in San Marcos has the potential to inform healthcare planning and delivery by identifying population health needs, disparities and risk factors. Healthcare providers and policymakers can allocate resources more effectively, develop prevention and intervention programs and address health inequities within communities by understanding demographic trends. Leveraging demographic statistics can enable healthcare providers and policymakers to strive for equitable, accessible and high-quality healthcare for all individuals and communities. This proactive healthcare planning approach ensures targeted interventions, efficient resource allocation and tailored healthcare services to meet diverse population needs.

Understanding Populations: Reporting and analyzing the demographic data in San Marcos can allow us to gain insights into the characteristics and composition of populations, including age, gender, race, ethnicity, income, education and other socio-economic factors. This understanding is essential for addressing the diverse needs, preferences and challenges of different demographic groups within communities. Demographics can play a crucial role in understanding populations, informing decision-making processes and promoting equity, inclusion, and well-being for all individuals and communities. San Marcos population data serves as a foundation for addressing social, economic, and environmental challenges and promoting the well-being and resilience of societies.

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Demographics Quick Facts

  • The population density in San Marcos is 1463% higher than Texas
  • The median age in San Marcos is 27% lower than Texas
  • In San Marcos 78.83% of the population is White
  • In San Marcos 6.00% of the population is Black
  • In San Marcos 2.77% of the population is Asian

Compare San Marcos, TX Demographics


      San Marcos racial demographics

      Race San Marcos Texas National
      White 78.83% 74.84% 73.35%
      Black 6.00% 11.95% 12.63%
      Asian 2.77% 4.36% 5.22%
      American Indian 0.18% 0.48% 0.82%
      Native Hawaiian 0.08% 0.08% 0.18%
      Mixed race 7.26% 2.50% 3.06%
      Other race 4.87% 5.79% 4.75%
      In San Marcos, 41.7% 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

      San Marcos age breakdown

      Marital status

      Age of children in married couples

      Source: The San Marcos, TX demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).