<p>Jobs-housing separation has become a widespread urban phenomenon, creating spatial mismatches between employment and housing and intensifying commuting challenges. Using multi-source spatial data, POIs, census statistics, and a questionnaire survey of recent college graduates in Beijing, this study measures jobs-housing agglomeration and street-level deviation and examines how jobs-housing spatial distribution shapes commuting-mode choices. The results show that both housing and enterprises are highly concentrated in the central urban area with multiple agglomeration centers, while peripheral districts generally exhibit single-center clusters located near adjacent core areas. Only 14.9% of streets are classified as jobs-housing balanced, indicating a substantial mismatch in Beijing. Multinomial regression further suggests that jobs-housing spatial structure significantly impacts commuting-mode choice, but the effect is evident only within the same administrative district. In addition, prospect theory analysis indicates that although private cars yield the highest theoretical prospect value, the subway remains the dominant commuting mode among college graduates, and fewer than 20% achieve the prospect theory optimal outcome. By examining the relationship between jobs-housing spatial distribution and commuting in a megacity context, this study contributes to housing and built-environment research by highlighting the role of administrative boundaries and spatial heterogeneity in shaping commuting decisions. The findings provide evidence for coordinating jobs-housing development and promoting more sustainable commuting.</p>