remember, SSL/TLS operates at the Transport Layer, so all the crypto goo happens under the application-layer HTTP stuff.
http://en.wikipedia.org/wiki/File:IP_stack_connections.svg
that's the long way of saying, "Yes!"
I disagree with the advice given here - even the reference for the accepted answer concludes:
You can of course use query string parameters with HTTPS, but don’t use them for anything that could present a security problem. For example, you could safely use them to identity part numbers or types of display like ‘accountview’ or ‘printpage’, but don’t use them for passwords, credit card numbers or other pieces of information that should not be publicly available.
So, no they aren't really safe...!
The entire transmission, including the query string, the whole URL, and even the type of request (GET, POST, etc.) is encrypted when using HTTPS.
Source: Stackoverflow.com