Too slow when data set is large

When larger datasets come into play, the loading/filtering is too slow for the app to be practical. Child care finder: http://codeforboston.github.io/child-care-finder/. Testing from home, takes around 20 seconds of loading before I can interact and another ~20 seconds when I click on a filter or map. Maybe caching could help here? Or loading less data? The map initializes with a view of the Boston area, but I have a feeling it's pulling in every location in MA before the user can interact with the map.