Final answer:
Historically, groups such as females, Hispanics, and African Americans have higher poverty rates and, thus, are likely to have the lowest median household incomes in the U.S.
Step-by-step explanation:
Based on data from sources such as the U.S. Census Bureau, we can determine which groups have lower or higher median household incomes. While specific data from the most current year is always preferred, we can refer to patterns noted in the past to address this question. Historically, some groups such as whites, the elderly, well-educated individuals, and male-headed households typically have lower poverty rates, which often correlate with higher median household income.
On the other hand, groups like females, Hispanics, and African Americans have been shown to have higher poverty rates, suggesting that these groups may have the lowest median household incomes compared to other demographics. It is important to note that these are general trends and individual circumstances can vary significantly. Moreover, most people living below the poverty line in the United States are white, but this is due to the population distribution rather than median income levels.