| Statistic | Plymouth | Minnesota | National |
| Population | 81,485 | 5,793,354 | 336,919,644 |
| Population density (sq mi) | 2,492 | 73 | 91 |
| Median age | 40.4 | 37.8 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 65% | 58% | 55% |
| Families w/ Kids under 18 | 46% | 45% | 43% |
| Speak English | 83% | 89% | 79% |
| Speak Spanish | 4% | 4% | 13% |

The demographics of Plymouth 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 81,485, Plymouth exhibits a population density of 2,492 people per square mile, contrasting with the national average of 91. The median age stands at 40.4, with 65% of individuals aged 15 or older being married and 46% having children under 18. In terms of income equality in Plymouth, 8% of households report a median income below $25,000, while 45% report an income exceeding $150,000, showcasing a diverse economic landscape.
Recognizing the racial demographics and ethnicity breakdown of Plymouth is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Plymouth, the racial breakdown comprises 77.7% White, 4.3% Black or African American, 10.9% Asian, 0.4% American Indian, and 0% Native Hawaiian, with 5.2% of the population identifying as Hispanic or Latino. 82.8% of households reported speaking English only, while 3.7% reported speaking Spanish only. Furthermore, 14.1% 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. Plymouth has a population density of 2,492 people per square mile, which far exceeds the national average of 91 and ranks among the most densely populated cities in the country.
Urban Development: Plymouth demographic statistics are invaluable for urban planners in designing and developing areas that cater to residents' needs, encompassing housing, transportation, and public services, all while fostering sustainability and enhancing quality of life. Shifts in demographics can influence gentrification and neighborhood transformation, whether in urban or rural settings. As neighborhoods attract new residents with varying income levels and lifestyle preferences, property values may increase, potentially displacing long-term residents and altering the neighborhood's character. Analyzing population density, age distribution, household size, and income levels is crucial for guiding decisions regarding zoning, transportation infrastructure, housing expansion and public amenities. Utilizing Plymouth demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
Healthcare Planning: The analysis of Plymouth demographics can offer insights into healthcare planning and delivery, identifying population health needs, disparities and risk factors. By understanding demographic trends, healthcare providers and policymakers can allocate resources effectively, develop prevention and intervention programs and address health inequities within communities. Through the use of demographic data and statistics, healthcare providers and policymakers aim to achieve equitable, accessible and high-quality healthcare for all individuals and communities. This proactive approach to healthcare planning ensures targeted interventions, efficient resource allocation and customized healthcare services to meet the diverse needs of populations.
Education Allocation: In education planning, Plymouth 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, Plymouth 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.
| Race | Plymouth | Minnesota | National |
| White | 77.73% | 84.34% | 73.35% |
| Black | 4.31% | 5.70% | 12.63% |
| Asian | 10.85% | 4.53% | 5.22% |
| American Indian | 0.41% | 1.04% | 0.82% |
| Native Hawaiian | 0.05% | 0.04% | 0.18% |
| Mixed race | 4.74% | 2.72% | 3.06% |
| Other race | 1.91% | 1.62% | 4.75% |