Inclusion Criteria:

• 1. Participants must be able to provide informed consent and function at an intellectual level sufficient to allow accurate completion of all assessment instruments.
• 2. Participants must be over the age of 18.
• 3. Participants must meet criteria for post-partum depression: a) onset of symptoms in the first year postpartum
• 4. Participants must have a HRSD17 greater than or equal to 14 at baseline.

Exclusion Criteria:

• 1. Participants must not be pregnant.
• 2. Participants must not meet moderate or severe use disorder of any substance with the exception of Tobacco Use Disorder.
• 3. Participants must not have current psychotic symptoms.
• 4. Participants must not have a history of dementia or other cognitive impairment.
• 5. Participants must not have active suicidal ideation requiring hospitalization or a suicide attempt within the past 3 months.
• 6. Participants must not have any contraindications to receiving rTMS (e.g. metal implanted above the neck, history of seizure, any known brain lesion).
• 7. Participants must not have any unstable general medical conditions.
• 8. Participants must not have had eclampsia during pregnancy.