Anonymous wrote:Cleveland Park --DC
Barnaby Wood--DC
Spring Valley--DC
Kalorama--DC
Chevy Chase--DC
Palisades--DC
Lyon Village, Arlington VA
Chevy Chase Village Bethesda (north of Bradley, west of Conn)
Barnaby Woods and Spring Valley are not generally walkable to retail or the metro. Palisades is not near the metro. Kalorama trends too old for what you're looking for--not many kids and no neighborhood events that I know of.
Based on your criteria, I would search the 20008, 20015 and 20016 zip codes in DC and 20815 in Maryland. (Not all of those zip codes are walkable, but if you stick to a house relatively close to Connecticut Ave or Wisconsin Ave it will be walkable.
Good luck with your search!