Background: Retail health clinics offer easy access and lower costs in seeking nonemergent and usually focused care. The objective of this observational study was to describe the use of retail clinic services by women at MinuteClinic at CVS, the largest network of retail clinics in the United States. Methods: The retail clinic's large database included complete national data for every in-person encounter as recorded on the same electronic health record. Virtual care and pharmacist-delivered services like COVID-19 testing were excluded from the analysis. The primary reason for the visit and the patient's age group (<15, 15-44, 45-64, ≥65 years) and self-reported sex were recorded at each encounter from the most recent 5 years (January 1, 2018, to December 31, 2022). Results: There were 17,969,483 encounters by women seeking care, and women ≥15 years old were more likely than men to attend the clinics. Half of all encounters (50.6%) were for non-gynecologic acute care, whereas one-third (33.6%) dealt with either an infection or the need for a vaccination. Gynecologic reasons involved 5.6% of all encounters in women ≥15 years of age. No obstetrical care was provided except for pregnancy testing with referral, acute non-obstetric needs, or guideline-recommended vaccinations. Conclusion: Women, especially of reproductive age, are more inclined than men to seek care at retail clinics. Acute care is the most common need, although requests for immunizations, infection screening and treatment, and reproductive health issues occurred often.