Probably has something to do with the increase in rabbits. Also seeing a ton of skinks.
I've seen 2 skinks at home (Oakton) this year, one outside and the other in my basement under the control of our cat. While skinks may be exceptionally elusive in the great outdoors, they don't move well on carpeting.
I had previously seen zero skinks since moving to Oakton in 2002 so my anecdotal observation is supportive of your own.
Regarding fox, they are said to have moved closer to humans seeking protection from coyotes. I had heard coyotes were in our neighborhood before actually seeing one in April, a first here at home. Fox sightings are damn near a daily occurrence, but lately the % showing mange has gone up a lot.