I was visiting my brother in Woodbrige VA a couple years ago and saw a corgi walking with its owner, while out and about on a car ride!! I sooo wanted to stop and say hello, but my brother wouldnt stop. :O Not that this info helps you much but I thought I would share! The reason I was soo excited, is because they were walking fairly close to where my brother lives, so I guess I was hoping we would see them again before our trip home to Chicago!
There is a group for corgis living the DC area on here. Here is the link to the group hope this helps http://mycorgi.com/group/themarylanddccorgigroup?
Thanks!! Why didn't I think of that, lol.