In Open Office word document, you can find the word count using the Tools menu.
For example, if you have the following texts in the Text Document in OpenOffice.org Writer. Then click the Tools menu and select Word Count from the list of available menus.
How to show the number of words in a OpenOffice.org Writer text document
This would display the following required statistics including the count of words and characters in both current selection as well as the whole document.