Simple blog stats plugin allows you to view stats on various categories like total no. of posts, total no. of pages, total no. of media files, number of registered users, categories, tags, etc. It uses caching for better performance and provides shortcodes to display page and post statistics. Provides template tags to display stats anywhere in your theme. It configures text/markup to appear before or after each shortcode. It displays lists of stats via dashboard widgets.
WordPress Plugin Link