Single mother of 4 looking for apartments, house, townhouse, ect to move into by mid July for inexpensive on a tight budget (arent we all)

Im not trying to pull heart strings but might be someone out there with some useful info. Single divorced mother of 4. Limited income. Been and am working with the counties for asst but long wait lists, living in a situation that isnt the greatest for my offspring, living with ex and ex in laws, really uncomfortable. Can afford about $600 in rent monthly. Any info out there? Need this to stabilize, return to college, get off state aide and become self sufficient.