Debian apt-get mirrors
From KlavoWiki
By default raspbian will only use the repository from raspbian.org rather than using a local mirror.
sources.list
Edit the following file moving the default entry to the bottom of the list and adding the following mirrors.
vi /etc/apt/sources.list
Australia
deb http://mirror.aarnet.edu.au/pub/raspbian/raspbian/ wheezy main contrib non-free rpi deb http://mirror.internode.on.net/pub/raspbian/raspbian/ wheezy main contrib non-free rpi deb http://raspbian.mirror.digitalpacific.com.au/raspbian/ wheezy main contrib non-free rpi
New Zealand
At time of document creation, none.
Singapore
deb http://mirror.nus.edu.sg/raspbian/raspbian/ wheezy main contrib non-free rpi deb http://mirror.0x.sg/raspbian/raspbian/ wheezy main contrib non-free rpi deb http://raspbian.3ezy.com/raspbian/raspbian/ wheezy main contrib non-free rpi
Mirrors
For a list or Raspbian mirrors visit RaspbianMirrors