Craigslist has a nice section in the personals area for people looking for friends. You can go to the craigslist area for any country in the world and post looking for a pen pal or pen friend. I think it is a marvelous idea and not enough people do it anymore!
You can start by going online to different websites like , or or if you looking for a specific type of pen friend like in christianity or religion you can go to . If you want you can even start pen friending inmates, military folks . their websites are or