| Statistic | Three Rivers | Oregon | National |
| Population | 3,443 | 4,327,302 | 336,919,644 |
| Population density (sq mi) | 457 | 45 | 91 |
| Median age | 46.0 | 39.1 | 37.7 |
| Male/Female ratio | 1.3:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 55% | 55% | 55% |
| Families w/ Kids under 18 | 33% | 42% | 43% |
| Speak English | 96% | 85% | 79% |
| Speak Spanish | 3% | 9% | 13% |

The demographics of Three Rivers 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 3,443, Three Rivers exhibits a population density of 457 people per square mile, contrasting with the national average of 91. The median age stands at 46, with 55% of individuals aged 15 or older being married and 33% having children under 18. In terms of income equality in Three Rivers, 6% of households report a median income below $25,000, while 20% report an income exceeding $150,000, showcasing a diverse economic landscape.
Recognizing the racial demographics and ethnicity breakdown of Three Rivers is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Three Rivers, the racial breakdown comprises 91.7% White, 0% Black or African American, 0.7% Asian, 1.1% American Indian, and 0% Native Hawaiian, with 5.7% of the population identifying as Hispanic or Latino. 95.9% of households reported speaking English only, while 3.1% reported speaking Spanish only. Furthermore, 1% of residents were categorized as foreign-born.
Areas with lower than average population density like Three Rivers, could offer a more relaxed pace of life, closer connection to nature, extraordinary sense of community, greater affordability and tend to be safer, making them attractive options for those seeking a quieter, more peaceful lifestyle away from the hustle and bustle of urban living. These areas often have a lower cost of living, with housing prices that are typically more affordable and residents may also benefit from lower taxes, living expenses and insurance rates. Low population density areas also tend to have lower crime rates compared to densely populated urban areas. This can contribute to a greater sense of safety and security for residents and their families. The Three Rivers population density is 457 people per square mile, which is lower than 50% of the cities across the country, putting it in a position to take advantage of all these great benefits.
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 Three Rivers 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.
Policy Planning: Demographic data and statistics can inform policy and decision-making processes at various levels of government, as well as in organizations and businesses. By reporting and analyzing Three Rivers demographics data, policymakers, government officials and organizational leaders can identify areas of need, allocate resources effectively and develop targeted policies and programs that address the specific needs and priorities of different demographic groups. Three Rivers demographics can play a crucial role in policy planning by informing resource allocation, evidence-based decision making, identifying priorities, forecasting future trends, monitoring policy impact and promoting equity and inclusion. By leveraging this data effectively, policymakers can develop policies that are targeted, effective and responsive to the needs of diverse communities.
Urban Development: Three Rivers 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 Three Rivers demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
| Race | Three Rivers | Oregon | National |
| White | 91.75% | 85.07% | 73.35% |
| Black | 0.00% | 1.86% | 12.63% |
| Asian | 0.68% | 4.02% | 5.22% |
| American Indian | 1.10% | 1.14% | 0.82% |
| Native Hawaiian | 0.00% | 0.38% | 0.18% |
| Mixed race | 3.30% | 4.41% | 3.06% |
| Other race | 3.18% | 3.13% | 4.75% |