Median Household Income
The income of households includes the income of the householder and all other individuals 15 years old and over, whether or not they are related to the householder. The statistic refers to income earned during calendar year 1999 (and 1979 and 1989), but the composition and characteristics of households refer to the time of the census -- April 1, 2000 (or 1980 or 1990). Using standard distribution, the median divides the distribution into two equal parts: one half of the cases falling below the median income and one half above the median.
Last updated Sep 27, 2011