Look again by country:
In the US it also depends on which state,
How many sexual partners does someone from the United States have?
On average, people who live in the United States have between 10 and 11 sexual partners over the course of their lives. However, the average number of sexual partners a person in the US has can vary widely from state to state, based upon local cultures and religious preferences in particular. For example, residents of Louisiana report an average of 15.7 sexual partners. By comparison, the people of Utah, 62% of whom belong to the Church of Jesus Christ of Latter-day Saints, report an average of 2.6 sexual partners.
The age at which someone loses his or her virginity can also impact the number of sexual partners he or she has. In the United States, people tend to lose their virginity at 17 years of age, on average.