You can adopt at any age! You can usually apply and social services are sent to see if you are fit and able to be a mother. Just basic routine checks like cleanliness, some health questions etc. You should go for it! I myself am an adopted child and I have the best parents in the world. It surely is the best feeling in the world to adopt a child! Good luck with everything :)
This is kind of late but...I'm 53, gay and single. I adopted my first child 4 years ago and am starting the process to add to my little family. I'm a foster/adoptive parent in AZ so our laws are pretty broad.