| Statistic | Custer | South Dakota | National |
| Population | 2,402 | 917,029 | 336,919,644 |
| Population density (sq mi) | 1,048 | 12 | 91 |
| Median age | 56.9 | 36.8 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 64% | 59% | 55% |
| Families w/ Kids under 18 | 29% | 44% | 43% |
| Speak English | 97% | 94% | 79% |
| Speak Spanish | 2% | 2% | 13% |

Understanding the demographics of Custer is essential for gaining insights into the composition, dynamics and needs of any city, town or village. This knowledge empowers planners, developers and policymakers to strategize effectively, promoting prosperity, equity and well-being for all residents. The Custer population is 2,402, with a population density of 1,048 people per square mile, diverging from the national average of 91. The median age is 56.9, and 64% of individuals aged 15 or older are married, while 29% have children under 18. As far as income equality in Custer, 25% of households have a median income below $25,000, whereas 13% report an income exceeding $150,000, indicating a varied economic landscape within the area.
The Custer 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 Custer, the racial breakdown reveals 90.2% White, 1% Black or African American, 0% Asian, 7.3% American Indian and 0% Native Hawaiian, with 4.1% of the population identifying as Hispanic or Latino. Of all households, 97.2% reported speaking English only, while 2.1% reported speaking Spanish only. Moreover, 3.3% of residents were classified as foreign-born.
Areas like Custer that have a higher than average population density tend to support environmental sustainability by reducing per capita energy consumption, greenhouse gas emissions and land use. Compact urban development encourages energy-efficient buildings, walking, cycling and the use of public transit, promoting sustainable lifestyles and reducing environmental impact. Densely populated areas also tend to have more vibrant social and cultural scenes, with a diverse population contributing to a wide array of cultural events, festivals and community activities. This diversity fosters creativity, innovation and cross-cultural exchange, enriching the social fabric of the community. The Custer population density is higher than average and comes in at 1,048 people per square mile (compared to the nationwide average of 91), putting it in a position to take advantage of all the benefits of a densely populated area.
In a city like Custer with fewer children, there are numerous advantages tailored to a demographic where families with fewer or no children seek an ideal environment. These benefits may encompass a serene atmosphere, a heightened emphasis on amenities geared towards adults, reduced traffic congestion and enhanced affordability. Notably, one of the key advantages could be the wider availability of housing options designed to suit adult residents or smaller households. This may include a variety of housing types such as condominiums, apartments, or single-family homes tailored for couples or individuals without children, thereby offering a diverse range of choices for prospective buyers or renters. Areas with fewer children may also signal that the locale is conducive to retirees or seniors. In Custer, only 29% of the population consists of children under 18 years old, significantly below the national average. Additionally, 64% of residents aged over 15 are married. These demographics could suggest a promising environment for capitalizing on all the benefits of a city with fewer children.
Healthcare Planning: The analysis of Custer 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.
Urban Development: Custer 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 Custer demographic data in planning and executing affordable housing initiatives can serve as a preventive measure against displacement.
Education Allocation: In education planning, Custer 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, Custer 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 | Custer | South Dakota | National |
| White | 90.19% | 84.77% | 73.35% |
| Black | 1.04% | 1.65% | 12.63% |
| Asian | 0.00% | 1.33% | 5.22% |
| American Indian | 7.30% | 8.72% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 0.52% | 2.61% | 3.06% |
| Other race | 0.95% | 0.88% | 4.75% |