Practically if you want to meet like minded people you need to get out there and do it. Look for moots in your area, set one up if you have to. Go on internet forums, get to know people.
From a craft perspective, look at what you can do in your job to advance your witchcraft. I work in a bank, hardly witchy, but I strive to make life a little happier for each of my customers and I feel a real sense of value when I have guided them through a difficult time like a personal bereavement.
With your colleagues, have you tried actually explaining to them what it is you do? If their perception (not uncommonly) is a black hatted old hag flying the night skies they may well be uncomfortable with what you are telling them. Trust them a bit and you may find they are genuinely interested. If they aren't then remember you are there to be part of a working team, not as a spokesman for your craft. Find other things you have in common with them.
Emotionally I think you are writing people off too quickly. People are not the sum total of what they do. Working in a burger bar does not mean that person is lacking in intelligence or spirituality. Take your very good self for example. Or me. Given the choice between working in McDonalds or a being a high powered executive in a Chanel suit, I would choose McDonalds. Much more compatiable with the state of mind I need for my witchcraft. I don't want to be harried, stressed out and bogged down with responsibilities. A lot of people work in the more mundane jobs because they want to focus on the other parts of their lives rather than what they do for a living. Don't assume a burger flipper is a lesser person just because they may have chosen to opt out of the rat race.
As witches we are ideally placed to detect the spark of humanity wherever it exists. And it exists in all of us. Talk to your colleagues, don't assume they are stupid. Get to know them, find out about them. Without exception none of my closest friends practise the craft. But we have other things in common, other things that I value in our friendships. A witch looks for guidance and signposts on her path and these messages can come from anywhere. A chance conversation can open up a whole new direction. But unless you can pull yourself down from your lofty position in the clouds you are going to miss a lot of the value (and fun) of interacting with your colleagues.
And don't make the mistake of confusing academic ability with intelligence. Some of the most brilliant people I have ever met have never set foot inside a university.
Image http://www.sxc.hu/photo/1119511 (lockstockb)