of babies born in 2014
were twins, triplets or higher-order multiples
Source:Pew Research Center
In 2014, 3.5 percent of babies born were twins, triplets, or higher-order multiples, accounting for almost 140,000 births. While multiples still make up a small share of births, this marks a dramatic increase since 1915—the first year for which reliable data are available—when about 2 percent of all births were multiples.