Name Guides
The History of American Baby Names: A Century of SSA Data
Where This Data Actually Comes From
The Social Security Administration has issued Social Security numbers to virtually every child born in the United States since the program's early decades, and each application records the child's first name and sex. That administrative process, not a survey or a marketing dataset, is the actual source of the baby name records available through Data.gov and used throughout this site.
Why the Records Start When They Do
Name records become reliable once Social Security number registration became close to universal for newborns, which is part of why most public datasets, including this one, begin in the early-to-mid 20th century rather than reaching further back. Earlier name popularity has to be estimated from other historical sources, which are far less complete and consistent than the SSA's administrative records.
What a Century of Data Actually Shows
Looking across a full century of records reveals broad patterns: the number of unique names in circulation has grown substantially over time, reflecting both population growth and a cultural shift toward more individualized naming. Annual birth totals themselves track major historical events, economic cycles, and demographic shifts, visible directly in the year-by-year totals.
Why This Data Is a Genuinely Useful Resource
Because the data is drawn from actual administrative records rather than surveys or estimates, it offers a rare, genuinely comprehensive picture of naming patterns at national scale. That's part of why it's such a commonly used foundation for baby name research, journalism, and tools like this one.
Using the Data Responsibly
It's worth remembering that this dataset reflects registered legal first names only, not nicknames, middle names, or how a name is actually used day to day. Treating the numbers as a starting point for exploration, rather than a strict ranking of what names are "correct" to choose, is the most useful way to engage with a century of naming history.