| Statistic | Middlefield | Ohio | National |
| Population | 2,770 | 12,145,682 | 336,919,644 |
| Population density (sq mi) | 911 | 297 | 91 |
| Median age | 52.3 | 39.3 | 37.7 |
| Male/Female ratio | 0.7:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 49% | 56% | 55% |
| Families w/ Kids under 18 | 35% | 42% | 43% |
| Speak English | 93% | 93% | 79% |
| Speak Spanish | 2% | 2% | 13% |

The demographics of Middlefield 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 2,770, Middlefield exhibits a population density of 911 people per square mile, contrasting with the national average of 91. The median age stands at 52.3, with 49% of individuals aged 15 or older being married and 35% having children under 18. In terms of income equality in Middlefield, 15% of households report a median income below $25,000, while 9% report an income exceeding $150,000, showcasing a diverse economic landscape.
The Middlefield racial demographics and ethnicity breakdown could be indispensable tools for recognizing and rectifying systemic inequities, fostering social justice and inclusion and cultivating resilient communities. In Middlefield, the racial breakdown reveals 95.7% White, 2.9% Black or African American, 0.5% Asian, 0% American Indian and 0% Native Hawaiian, with 0.1% of the population identifying as Hispanic or Latino. Of all households, 93.3% reported speaking English only, while 1.5% reported speaking Spanish only. Moreover, 1.8% of residents were classified as foreign-born.
Middlefield could serve as a prime example of how areas with higher-than-average population density can champion environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Embracing compact urban development, these densely populated areas promote energy-efficient buildings and encourages walking, cycling and public transit use, fostering sustainable lifestyles and minimizing environmental impact. Moreover, densely populated regions are renowned for their vibrant social and cultural scenes, driven by a diverse population that organizes an array of cultural events, festivals and community activities. This cultural diversity ignites creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. The Middlefield population density is 911, surpassing the national average of 91 per square miles, positioning itself to capitalize on the advantages of dense urban living.
Urban Development: Middlefield 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 Middlefield demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
Healthcare Planning: By analyzing the Middlefield demographic data, it can potentially inform healthcare planning and delivery by identifying population health needs, disparities, and risk factors. Understanding demographic trends helps healthcare providers and policymakers allocate resources, develop prevention and intervention programs, and address health inequities within communities. By leveraging demographic data, healthcare providers and policymakers can work towards achieving equitable, accessible, and high-quality healthcare for all individuals and communities. This proactive approach to healthcare planning ensures that interventions are targeted, resources are allocated efficiently, and healthcare services are tailored to meet the diverse needs of populations.
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 Middlefield 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. Middlefield 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.

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| Race | Middlefield | Ohio | National |
| White | 95.70% | 82.16% | 73.35% |
| Black | 2.93% | 12.27% | 12.63% |
| Asian | 0.52% | 1.94% | 5.22% |
| American Indian | 0.00% | 0.19% | 0.82% |
| Native Hawaiian | 0.00% | 0.03% | 0.18% |
| Mixed race | 0.33% | 2.57% | 3.06% |
| Other race | 0.52% | 0.85% | 4.75% |