Official site is here
https://geocarenavigator.hrsa.gov/?page=Home
There is no multiple select tools, only single select tool, if you want to select multiple zip code, you have to click single select tool each time before you click on map. This is annoying. Original design you don't have to click any select tool, just continue click several different zip code on map, will do the multiple zip code select.
Some times but not always
User try to select multiple zip code service area, then crashed. No one know when crash, what that error message means !!!!
No where to go. No button allow you to recover from crash. You best chance is refresh your browser to start over again.
Here you can select 'multiple' select radio button, then just continue click several different zip code on map, will do the multiple zip code select.
https://transparentgov.net/json2tree/datahub.io/uds/uds_data.html?_center_zoom=9&_center_lat=33.34289933958673&_center_long=-116.48148785298218&widgetopacity=0.9&tooltype=multiple_select&showServiceArea=show&patientsIncluded=34&showHealthCenter=hide&search=92086