Statistic St. Marys Ohio National
Population 8,487 12,145,682 336,919,644
Population density (sq mi) 1,828 297 91
Median age 36.1 39.3 37.7
Male/Female ratio 0.8:1 1.0:1 1.0:1
Married (15yrs & older) 62% 56% 55%
Families w/ Kids under 18 50% 42% 43%
Speak English 98% 93% 79%
Speak Spanish 1% 2% 13%
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Overview of St. Marys Demographics

The population in St. Marys is 8,487, while the population density is 1,828 people per square mile, contrasting with the national average of 91. The median age stands at 36.1, with 62% of individuals aged 15 or older being married and 50% having children under 18. In terms of household income equality in St. Marys, 17% of households report a median income below $25,000, while 9% report an income exceeding $150,000. The St. Marys 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.

St. Marys Racial Demographics & Ethnicity

Understanding the St. Marys racial demographics and ethnic composition is paramount for addressing systemic inequities, advancing social justice and inclusion and fortifying communities. In St. Marys, the racial breakdown indicates 95.1% White, 0.3% Black or African American, 0.4% Asian, 0% American Indian and 0% Native Hawaiian, with 1.2% of the population identifying as Hispanic or Latino. Notably, 97.8% of households reported speaking English only, while 0.5% reported speaking Spanish only. Additionally, 1.1% of residents were categorized as foreign-born.

St. Marys Population Density

St. Marys has a population density that is well above-average, which plays a pivotal role in promoting environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Its compact urban development encourages energy-efficient buildings, active transportation modes like walking and cycling and the utilization of public transit, fostering sustainable lifestyles and mitigating environmental impact. Additionally, the area's dense population contributes to a vibrant social and cultural scene, featuring a diverse array of cultural events, festivals and community activities. This cultural diversity fuels creativity, innovation and cross-cultural exchange, enhancing the community's social fabric. St. Marys has a population density of 1,828 people per square mile, exceeding the national average of 91 and positions itself in a good spot to reap the benefits of densely populated areas.

Why are Demographics Important?

Social Cohesion: The reporting and analysis of demographics are essential for fostering social cohesion and understanding among diverse communities. By acknowledging and valuing differences in St. Marys demographics, societies can champion inclusivity, diversity and social harmony while tackling social disparities and advocating for equal opportunities. Racial demographics showcase the varied makeup of a population and play a vital role in nurturing inclusive and hospitable communities. Embracing diversity bolsters social cohesion, enhances cultural comprehension and enriches society by honoring the contributions of individuals from diverse racial and ethnic backgrounds.

Education Allocation: Utilizing census data like St. Marys demographics can be useful in guiding education planning, as it helps identify student demographics, school enrollment trends and educational needs. This data assists schools and policymakers in allocating resources and devising effective educational programs. It serves as a vital tool for recognizing disparities in educational access and outcomes among various demographic groups, including racial and ethnic minorities, socio-economic status and students with disabilities. By disaggregating data based on demographic factors, education planners can pinpoint areas of inequity and implement targeted interventions to enhance access, support and outcomes for marginalized students. In essence, St. Marys demographic statistics can play an indispensable role in education by promoting equity, bolstering student success and cultivating inclusive learning environments tailored to meet the needs of all students.

Understanding Populations: By delving into and analyzing the St. Marys 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 St. Marys 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.

Demographics Quick Facts

  • The population density in St. Marys is 515% higher than Ohio
  • The median age in St. Marys is 8% lower than Ohio
  • In St. Marys 95.13% of the population is White
  • In St. Marys 0.34% of the population is Black
  • In St. Marys 0.45% of the population is Asian

Compare St. Marys, OH Demographics

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      St. Marys racial demographics

      Race St. Marys Ohio National
      White 95.13% 82.16% 73.35%
      Black 0.34% 12.27% 12.63%
      Asian 0.45% 1.94% 5.22%
      American Indian 0.00% 0.19% 0.82%
      Native Hawaiian 0.00% 0.03% 0.18%
      Mixed race 3.45% 2.57% 3.06%
      Other race 0.63% 0.85% 4.75%
      In St. Marys, 1.2% 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

      St. Marys age breakdown

      Marital status

      Age of children in married couples

      Source: The St. Marys, OH demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS) and include 2026 modeled data developed using proprietary methodologies.