| Statistic | Greenfield | Missouri | National |
| Population | 1,446 | 6,326,040 | 336,919,644 |
| Population density (sq mi) | 1,272 | 92 | 91 |
| Median age | 41.6 | 38.3 | 37.7 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 56% | 57% | 55% |
| Families w/ Kids under 18 | 47% | 42% | 43% |
| Speak English | 96% | 94% | 79% |
| Speak Spanish | 2% | 3% | 13% |

The demographics of Greenfield 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 1,446, Greenfield exhibits a population density of 1,272 people per square mile, contrasting with the national average of 91. The median age stands at 41.6, with 56% of individuals aged 15 or older being married and 47% having children under 18. In terms of income equality in Greenfield, 52% of households report a median income below $25,000, while 3% report an income exceeding $150,000, showcasing a diverse economic landscape.
The Greenfield racial demographics and ethnicity breakdown serves as a critical tool for understanding and addressing systemic inequities, promoting social justice and inclusion and building stronger, more resilient communities. The racial breakdown in Greenfield is 94% White, 0.7% Black or African American, 0% Asian, 0.9% American Indian and 0% Native Hawaiian - 7.5% of the population identify as Hispanic or Latino. Of all households, 96.4% reported speaking English only, while 1.6% reported speaking Spanish only. A total of 1.8% of residents were considered foreign born.
Greenfield 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 Greenfield population density is 1,272, surpassing the national average of 91 per square miles, positioning itself to capitalize on the advantages of dense urban living.
Policy Planning: Demographic data and statistics serve as vital tools for informing policy and decision-making processes across various levels of government, as well as within organizations and businesses. Through the reporting and analysis of demographic data, policymakers, government officials, and organizational leaders can pinpoint areas of need, allocate resources efficiently, and craft tailored policies and programs to address the unique needs and priorities of different demographic groups. The utilization of demographic data in Greenfield is instrumental in policy planning, facilitating resource allocation, evidence-based decision-making, priority identification, trend forecasting, policy impact assessment, and the promotion of equity and inclusion. By harnessing this data effectively, policymakers can devise targeted, impactful, and inclusive policies that cater to the diverse needs of communities.
Urban Development: Urban planners could use Greenfield demographic data to design and create areas that accommodate the needs of residents, including housing, transportation and public services, while promoting sustainability and quality of life. Demographic shifts can contribute to gentrification and neighborhood change in urban or rural areas. As neighborhoods attract new residents with different income levels and lifestyle preferences, property values may rise, leading to displacement of long-time residents and changes in the character and identity of the neighborhood. Understanding population density, age distribution, household size and income levels helps inform decisions related to zoning, transportation infrastructure, housing development and public amenities. Lastly, using Greenfield demographics for planning and development of affordable housing can help prevent displacement.
Social Cohesion: Reporting and analyzing demographics can play a crucial role in fostering social cohesion and understanding among diverse communities. By recognizing and appreciating differences in Greenfield demographics, societies can promote inclusivity, diversity and social harmony, while addressing social disparities and promoting equal opportunities for all individuals. Racial demographics reflect the diversity of a population and contribute to fostering inclusive and welcoming communities. Embracing diversity strengthens social cohesion, promotes cultural understanding and enriches the fabric of society by celebrating the contributions of individuals from different racial and ethnic backgrounds.
| Race | Greenfield | Missouri | National |
| White | 94.00% | 82.53% | 73.35% |
| Black | 0.71% | 11.58% | 12.63% |
| Asian | 0.00% | 1.78% | 5.22% |
| American Indian | 0.93% | 0.42% | 0.82% |
| Native Hawaiian | 0.00% | 0.11% | 0.18% |
| Mixed race | 3.14% | 2.44% | 3.06% |
| Other race | 1.21% | 1.13% | 4.75% |