Typically, the "body" tags are in the index.php within the
I recommend if you are going to use one of these free hit counters you put it at the very bottom of your page, usually below the footer.
Also, I found that when using these free hit counters, several nasty things happened. Now it might have been a coincidence that my over sexed email spam started arriving by the gross, unwanted in my email, but who is to really know. What I do know is that my page loading slowed down a lot. If that isn't important, who cares, but I believe that there are some free and worry-free hit counters as plugins. Check out the http://codex.wordpress.org/Plugins/ page to see what is available. Since these tend to work directly with your site and not from something offsite, they are usually fast and more accurate.
And honestly, these can be fun, but most people know they can be faked and are gimmicky, often cluttering up a page. It's up to you how you use it, just my opinion. It took me a while to get over them. The site statistics were more important to ME than my viewers.