I found a link to the 1000 most common words in written English broken down into groups of 100.
The list is from WEB Dubois Learning Center website via their Education Watch Program
), and the list is HERE.
Or, you can try this really cool thing
: you can type in a word you think of and find its frequency rank at www.wordcount.org
which has used over 86,000 words from the British National Corpus (which has 100 million words). This is a really fun tool.