| Statistic | Arnold | Missouri | National |
| Population | 21,144 | 6,137,428 | 328,239,523 |
| Population density (sq mi) | 1,835 | 90 | 91 |
| Median age | 40.3 | 38.3 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 62% | 57% | 55% |
| Families w/ Kids under 18 | 48% | 42% | 43% |
| Speak English | 93% | 94% | 79% |
| Speak Spanish | 1% | 3% | 13% |
Arnold demographics provide invaluable insights into the composition, dynamics and needs of urban and rural areas, enabling them to plan, develop, and govern in ways that promote prosperity, equity and well-being for all residents. The Arnold population is 21,144 and has a population density of 1,835 people per square mile, compared to the national average of 91. The median age of all residents is 40.3, 62% of people 15 years of age or older are married and 48% have kids under the age of 18. In Arnold, 17% of households have a median income that is below $25,000 and 14% of households report a median income above $150,000.
Recognizing the racial demographics and ethnicity breakdown of Arnold is pivotal for addressing systemic inequities, championing social justice and inclusion and fostering resilient communities. In Arnold, the racial breakdown comprises 93.9% White, 0.3% Black or African American, 0.3% Asian, 0.2% American Indian, and 0% Native Hawaiian, with 1.7% of the population identifying as Hispanic or Latino. 92.8% of households reported speaking English only, while 1% reported speaking Spanish only. Furthermore, 4.8% of residents were categorized as foreign-born.
Arnold 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 Arnold population density is 1,835, 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 play a fundamental role in informing policy and decision-making processes across government entities, organizations and businesses. Through the analysis and interpretation of Arnold demographic data, policymakers, government officials, and organizational leaders can pinpoint areas of concern, allocate resources efficiently, and devise policies and initiatives tailored to the specific needs and preferences of distinct demographic groups. The utilization of demographics in Arnold can be crucial in policy planning, facilitating evidence-based decision-making, identifying key priorities, forecasting future trends, monitoring policy outcomes and advancing principles of equity and inclusion. By harnessing this data effectively, policymakers can develop policies that are targeted, effective and inclusive, thus meeting the diverse needs of communities.
Understanding Populations: The examination and analysis of Arnold demographic data can offer valuable insights into the composition and traits of populations, including age, gender, race, ethnicity, income, education and various socio-economic factors. This understanding is essential for addressing the varied needs, preferences, and challenges faced by different demographic groups within communities. Demographics hold significant importance in understanding populations, guiding decision-making processes and promoting equity, inclusion, and overall well-being for all individuals and communities. The Arnold population data serves as a cornerstone for addressing social, economic and environmental challenges, while also fostering the well-being and resilience of societies.
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 Arnold 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 | Arnold | Missouri | National |
| White | 93.86% | 82.53% | 73.35% |
| Black | 0.28% | 11.58% | 12.63% |
| Asian | 0.35% | 1.78% | 5.22% |
| American Indian | 0.16% | 0.42% | 0.82% |
| Native Hawaiian | 0.00% | 0.11% | 0.18% |
| Mixed race | 5.28% | 2.44% | 3.06% |
| Other race | 0.08% | 1.13% | 4.75% |
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