Market research reports and profiles of voting districts, which are examples of spatial analysis products, are most frequently created using data from census surveys. Census data provides detailed demographic, population, and housing information that can be spatially analyzed and mapped to voting districts and neighborhoods, enabling insights into voter populations, household characteristics, and other socio-economic factors relevant for market research and electoral studies

. Additionally, geographic boundaries such as voting districts are often derived from spatial data provided by the U.S. Census Bureau and related geospatial datasets, which are essential for linking demographic data to specific geographic units for analysis

. This combination of census demographic data with geographic boundary data forms the foundation for creating detailed spatial analysis products like those shown in voting district profiles and market research reports.