The phrase "neediest areas" refers to places or communities that require the most help or support because they have the greatest need or are experiencing the most difficulties. Full definition
It's used to redistribute food to dozens of needy areas in the city. (moneysense.ca)
Prioritising such a list also has its challenges, as so many needy areas see themselves as a priority when asked, and they are often well justified. (lawyer-monthly.com)