U.S. twin birth rate 1980-2018

Since 1980 the U.S. birth rate for twins has risen significantly. As of 2018 the birth rate for twins in the U.S. was 32.6 per 1,000 live births. It is believed that an increase in the twin birth rate may be associated with an increased use of vitro fertilization and other assisted reproductive technologies in recent years.

U.S. twin births

Across the U.S. twin birth rates vary in a variety of ways. The U.S. states with the highest twin birth rates are Connecticut and the District of Columbia. Ethnicity is another factor to be considered when investigating the twin birth rate. Since 1980 the U.S. twin birth rate has increased among all ethnicities, however, it has increased more among non-Hispanic black mothers and less among Hispanic mothers. And finally, age is another important factor in twin birth rates. As of 2018, mothers between the ages of 45-54 had the highest twin birth rates in the United States.

Assisted reproductive technology

Assisted reproductive technology (ART) is a treatment used to treat infertility among men and women. A common complication associated with ART is multiple births (twins, triplets, etc.). In the U.S., among all ART pregnancies the most common outcome was a single infant birth, followed by multiple infant births. Among all U.S. ART cycles (including those that did not lead to pregnancy) using non-donor eggs or embryos multiple-fetus pregnancy may be present in up to six percent of cases.

Birth rate for twins in the United States from 1980 to 2018 (per 1,000 live births)*

Twin births per 1,000 live births
201832.6
201733.3
201633.4
201533.5
201433.9
201333.7
201233.1
201133.2
201033.1
200933.2
200832.6
200732.2
200632.1
200532.2
200432.2
200331.5
200231.1
200130.1
200029.3
199928.9
199828.1
199726.8
199625.9
199524.8
199424.6
199324.1
199223.5
199123.1
199022.6
198922.3
198821.8
198721.5
198621.2
198520.5
198419.9
198319.9
198219.5
198119.3
198018.9
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Source

Release date

November 2019

Region

United States

Survey time period

1980 to 2018

Supplementary notes

* The number of live births in twin deliveries per 1,000 live births.

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Statistics on "Births in the U.S."

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