This paper undertakes a meticulous comparative analysis among incomes, consumer behaviors and asset allocations in the United States and China against a backdrop of globalization and economic diversification. It delineates the interplay of demographic trends, urbanization, educational attainments, stock market dynamics, real estate and other factors in shaping consumer preferences and financial strategies in both nations. Central to the findings is the pivotal role of age distributions and educational backgrounds in guiding consumption habits, unveiling a nuanced tapestry of generational and intellectual influences on market demands. Additionally, stark contrasts are observed in asset allocations, particularly in the stock and real estate markets, driven by disparate market maturities, regulatory landscapes, and systemic structures. This research holds substantial significance in enriching the global understanding of cross-national consumer behaviors, uncovering intricate factors and innovative insights that characterize the economic activities of two powerhouse economies. It yields valuable policy recommendations, advocating for enhanced financial literacy and diversified investment avenues to bolster consumer resilience and economic sustainability. Tailored strategies for nurturing educated consumption, investment diversification, and nuanced policy formulations are pivotal for leveraging the profound insights unearthed in this study.