Median income Information
Median income is the amount that divides the income distribution into two equal groups, half having income above that amount, and half having income below that amount. Mean income ( average) is the amount obtained by dividing the total aggregate income of a group by the number of units in that group. Mode income is the most frequently occurring income in a given income distribution.
- See also the country lists in the household income article.
In 2013, Gallup published a list of countries with median annual household income, based on a self-reported survey of approximately 2000 adults from each country.  Using median, rather than mean income, results in a much more accurate picture of the typical income of the middle class since the data will not be skewed by gains and abnormalities in the extreme ends. The figures are in international dollars using purchasing power parity and are based on responses from 2006 to 2012 inflation adjusted to 2010 levels. Below is a list of the top 30 countries. The figures do not take taxes and social contributions into account.  
(It needs to be strongly noted that a poll has nothing to do with a closely watched important political statistic such as median income when there are national institutions tasked with gathering and reporting important national statistics.)
Please note that the list below does not correspond to citizens of each country, but to all its residents. States rich in fossil fuels such as Qatar and Kuwait have a very large gap in terms of median annual earnings of citizens and non-citizens (reaching more than tenfold).
The annual median equivalence disposable household income for selected OECD countries is shown in the table below. This is the disposable income of an equivalent adult in a household in the middle of the income distribution in a year.
- An academic study on the Census income data claims that when correcting for underreporting, U.S. gross median household income was 15% higher in 2010 (table 3). 
- List of countries by average wage
- List of U.S. states by income
- Mean household income
- Income distribution
- Income quintiles
- Household income in the United States
- International Ranking of Household Income
- Median household income in Australia and New Zealand
- Median income per household member
- Places in the United States with notable demographic characteristics
- Poverty in the United States
- "Worldwide, Median Household Income About $10,000". Gallup.
- "New Measures of Global Income From the Gallup World Poll". Gallup. Gallup. December 13, 2013. Retrieved August 5, 2017.