How is Wikipedia Organized?

Articles in Wikipedia are organized according to their development status as well as their subject matter. A short, new article often starts as a "stub," and has some definitions and some links.  The most developed articles may be nominated for "featured article" status.

There are nine categories in the "category tree" of Wikipedia: Everyday life, Geography, History, Knowledge, Language, Literature, People, Religion, and Science.  These are the main "branches" of the category tree.  Within each group there is a smaller group, and with that one an even smaller group (and so on).  The articles themselves are like the leaves of the category tree, except each one is linked to a multitude of near or distant articles, making Wikipedia more cyclical.


Right now there are over 4 million articles in nine categories English alone.  This graph shows the exponential growth of Wikipedia since its conception.

In 2008, a study was done to see how much of Wikipedia was in each category.  This is a pie chart of their findings:

The majority of articles on Wikipedia are ones about culture and the arts.

References:

http://simple.wikipedia.org/wiki/Wikipedia:Categories

http://en.wikipedia.org/wiki/Wikipedia#Organization_of_article_pages