One significant difference between urban and rural areas of the US in the decades following World War II is the shift in population growth and economic development. Urban areas experienced a significant increase in population and saw rapid industrialization and economic growth during this time, leading to the rise of suburbs and a shift towards a more service-based economy. In contrast, rural areas saw a decline in population as people moved to cities in search of better job opportunities, resulting in economic stagnation and a decrease in agricultural activity. This led to disparities in income levels, access to resources, and overall quality of life between urban and rural areas.