Legal abortions rate in the U.S. 1973-2021, by marital status

In 2021, there were around 40 legal abortions per 100 live births among unmarried women in the United States. In comparison, the rate of abortion per live births among married women was around four per 100. The abortion rates for both married and unmarried women in the United States have decreased over the last few decades. Abortion statistics in the United StatesIn 2021, the overall rate of abortion in the United States per 100 live births was 20.4. Abortion in the U.S. is most common among women aged 20 to 29 years, with around 19 abortions per 1,000 women in this age group. The most common method of abortion in 2021 was medical abortion with a gestation of nine weeks or less, followed by surgical abortion with a gestation of 13 weeks or less. Medical abortion involves taking prescription medication to end the pregnancy while surgical abortion involves a surgical procedure. The two main types of surgical abortion are vacuum aspiration and dilation and evacuation (D&E). Abortion-related deaths in the United States are very rare, with only six such deaths reported in 2020.Abortion among adolescentsIn 2021, the abortion rate among adolescent women in the United States aged 15 to 19 years was 5.4 per 1,000 population. This was almost half the rate reported in the year 2011. Perhaps unsurprisingly, the abortion rate among adolescent women increases with age. In 2021, those aged 19 years had the highest rate of abortion among adolescent women. The majority of abortions performed on adolescent women are done in week nine or less of gestation. In 2021, there were around 28,341 abortions performed on adolescent women in week nine or less of gestation, while 9,564 abortion procedures were carried out after week nine of gestation.

于2021年，美国未婚女性的合法流产率约为每百名活产女性40例。相较之下，已婚女性的每百名活产女性流产率约为4例。在过去几十年中，美国已婚和未婚女性的流产率均有下降趋势。2021年，美国每百名活产女性的总体流产率为20.4。在美国，20至29岁的女性群体中，流产现象最为普遍，每千名女性中有约19例流产。2021年最常见的流产方法是九周或更短的药物流产，其次是九周或更短的手术流产。药物流产涉及服用处方药物以终止妊娠，而手术流产则涉及手术操作。手术流产主要有两种类型：真空吸引术和扩张刮宫术（D&E）。在美国，与流产相关的死亡事件极为罕见，2020年仅报告了六起此类死亡事件。未成年女性中的流产情况在2021年，美国15至19岁未成年女性的流产率为每千人口5.4，较2011年报告的比率几乎减半。不出所料，未成年女性的流产率随着年龄的增长而增加。2021年，19岁的未成年女性中，流产率最高。在未成年女性中进行的多数流产发生在妊娠九周或更早。2021年，约有28,341例未成年女性的流产发生在妊娠九周或更早，而9,564例流产手术发生在妊娠九周之后。