Chlamydia Statistics

Chlamydia is the most frequently reported bacterial STI in the United States.

Most Recent Data


Chlamydia — Rates of Reported Cases by Age Group and Sex, United States, 2019

Bar graph showing rates of reported cases of chlamydia in the United States by age group and sex in 2019.

* Per 100,000

Image Source: STD Surveillance 2019