What percentage of women who have an iud will get an ectopic pregnancy?

Less than 1%.: Using an intra-uterine devices (iud) is a very effective method of contraception - about as effective as surgery to have your "tubes tied." the rate of ectopic pregnancy, a pregnancy outside the normal location in the uterus, occurs in less than 1% of IUD users. This is a lower rate than ectopic pregnancies in women who do not use an iud.

Less than 1%: The idea that women who use iud's are prone to ectopic pregnancy comes from the fact that when a woman with an iud does become pregnant, the likelihood that the pregnancy will be ectopic is thought by some to be higher than if the woman had become pregnant while using other forms of birth control. Still the rate of ectopic pregnancy occurs in less than 1% of iud users.