Between 2006 and 2007, real median household income rose 1.3%, from $49,568 to $50,233 (see top chart above)—a level not statistically different from the 1999 pre-recession income peak ($50,641 in 1999 and $50,557 in 2000). This was the third annual increase in real median household income. Compared with 1967, the first year for which household income statistics are available, real median household income has increased 29.6%.


Comments: A comparison of real median income in 1967 of $38,771 per household to income of $50,233 per household in 2007 (29.6% higher) doesn't take into account the significant 22% decline in average household size over this period, from 3.28 persons per household in 1967 to an all-time low of 2.56 persons per household in 2007 (Census data here for income, here for average household size), see top chart above.
When adjusted for household size, real median income per household member reached an all-time high of $19,546 in 2007 (see bottom chart above), 65.6% higher than the $11,820 income per household member in 1967, and more than 2 times the unadjusted increase per household of 29.6% reported above.
Lost in all of the discussions and media reports about stagnating wages, income inequality, and the decline of the middle-class, we have this amazing statistical reality: In just a little more than one generation, real median income per household member has increased by a factor of almost 2/3!
It's been said that "the media constantly dwell on minor problems without celebrating the broader, more upbeat context in which they exist." A 2/3 increase in real income per person in just 40 years is definitely part of the broader, more upbeat context.
Source: Seeking Alpha, August 28, 2008