 This is fives times as large as the average household wealth for the next four percent (average household wealth of $2.7 million), fifteen times as large as the average household wealth for the next five percent (average household wealth of $908,000), and twenty-nine times the size of the average household wealth of the next ten percent of the population (average household wealth of $477,000) in the same year.Comparatively, the average household wealth of the lowest quartile was -$27,000 and the average household wealth of the second quartile (bottom 20-40th percentile of the population) was $5,000.The middle class, the middle quartile of the population, has an average household wealth level of $65,000.