How common is gonorrhea in the united states?

Very common. Gonorrhea is a very common std. It is very prevalent in the younger population and college aged people. It usually is associated with chlamydial infections.
... Gonorrhea is a very common sexually transmitted infection. The centers for disease control estimates that every year in the United States there are 820, 000 people with new infections. People ages 15-24 are estimated to account for 570, 000 of these new infections each year. There is effective treatment. Latex condoms decrease risk of getting gonorrhea.
See below. 1.01 million cases were reported in 1978, the highest in any year. Peak incidence occurred in 1975, 468 cases per 100, 000 population. The incidence has been declining, to 356, 000 reported cases, 119 per 100, 000 in 2007. The true incidence is propably twice what is reported.