Is there a way to use autocomplete and have weighted results?

Is there a way to use autocomplete and have weighted results?

Lets say I have a list of cities for my data to be used for the autocomplete plugin, but there are multiple cities with the same name. When these show up in the potential options is there a way I can control the sort order?

An example would be cities with higher populations would be at the top or more commonly used tags would appear first in the autocomplete list.