WP Word Count is a plugin by Brian J. Link for WordPress that gives you word count statistics for your blog’s posts and pages.
In addition to overall stats, WP Word Count also gives figures and details for the largest posts and pages of your blog as well as breakdowns for each of your blog’s authors. Latest version: 1.0.
Sates are displayed in the dashboard folder, top left of the admin page.
Plugin homepage: http://www.brianjlink.com/wpwordcount/