Displays Visitor Maps with location pins, city, and country. Includes a Who's Online Sidebar to show how many users are online. Includes a Who's Online admin dashboard to view visitor details. The visitor details include: what page the visitor is on, IP address, host lookup, online time, city, state, country, geolocation maps and more. No API key needed. 

http://www.642weather.com/weather/scripts-wordpress-visitor-maps.php