These look like they could be hackberry psyllids. They form galls on hackberry trees. Once fully developed, the adults will look to overwinter in protected locations (cracks, crevices, homes, etc.). https://apps.extension.umn.edu/garden/diagnose/insect/indoor/flies/small/hackberry-psyllids.html

Keeping windows shut is the best option for keeping them out of homes. They are attracted to lights, so turning lights off at night or keeping blinds or curtains closed will help reduce the numbers coming to your house. If they are indoors, vacuuming is the best way to get rid of them. Once temperatures get cold this fall they will go away. 

Thank you!  That is definitely what I'm dealing with as I have plenty of hackberries near my property.  I have also see hackberry nipple galls, but never knew that they were created from hackberry psyllids.