The map in your survey needs serious fixing. For one thing, it needs to be zoomed in to focus on the District and not its suburbs. There are also problems with how major streets are bolded (or not) and labeled. I live just south of Petworth and am having trouble finding it on your map, partly because what you’ve labeled as New Hampshire Avenue is actually North Capitol Street.
You might also consider redoing your question “What D.C. neighborhoods have you heard of?” with check-boxes and neighborhood names, rather than expecting people to list every single D.C. neighborhood they’ve heard of.