I can't speak for Christians, but Jewish scholars of all demonations have tended to view Genesis as allegory for at least a thousand years. This is why even the most Orthodox have tended not to see a conflict with evolution. A minority of the Orthodox (and a miniscule minority of the overall Jewish population) do cling to creationism, but even they don't take Genesis as a strictly literal accounting. I would be shocked if there were a dozen Jews on the planet who believed the earth was 6000 years old.
Now maybe the Jews are crazy... after all, what could Jews possibly know about the Torah?