The decision not to charge the cops who killed Breonna Taylor has taken its toll on an untold number of Louisville residents, who are having a hard time coping.

We’ve learned there’s been an increase in the number of Louisville residents seeking mental health help and are citing Breonna’s case as the reason.

Joe Nalley, CEO of Kentucky Mental Health Care, tells TMZ … the day after the announcement they saw 30 new clients, and a third of them cited Breonna not getting justice as the reason.

Millicent Cahoon, founder of Therapists for Protester Wellness, tells us their crisis hotline — an emergency call line that provides people with psychological help — has been ringing off the hook since the announcement … and they’ve needed 10 therapists minimum on the line to handle the volume.

The organization has also set up booths offering free mental health services