Chart 1. Summary of median equivalized household income, household population weighted, fourth quarter 2021 (in thousands of dollars)
Survey	U	W	E	Q1	Q2	Q3	Q4	Q5
Diary Survey	42.1	40.1	33.6	12.8	26.5	42.1	65.0	120.0
Interview Survey	42.5	41.0	31.5	11.6	25.6	42.3	65.9	120.0
Note: U = urban population (published index), W = wage earners, E = Americans 62 years of age and older, Q1 = first quintile (lowest 20 percent), Q2 = second quintile (second 20 percent), Q3 = third quintile (third 20 percent), Q4 = fourth quintile (fourth 20 percent), Q5 = fifth quintile (highest 20 percent). Source: U.S. Bureau of Labor Statistics.