To determine the baby names going extinct, 24/7 Tempo reviewed the 100 most popular boy and girl names each year between 1880 and 2018 from the Social Security Administration. We took the 1880-2011 average ranking of each name appearing on any of the SSA’s top 100 lists between those years. These names were highly popular for some significant period of time. We compared this earlier average level of popularity with the 2012-2018 average ranking of those same names.We selected the 25 names with the largest declines in average ranking between those two periods. The names are ranked by the drop amount.The SSA only collects data on names with at least five birth certificates. Alternate spellings of similar names were treated as discrete names.