The chart plots official rank by decade. Rank 1 (the most common published name in that period) is at the top. The vertical scale is logarithmic. Girls are a solid line with circles; boys are a dashed line with squares. A gap means the name was not in the official file for that decade — this page does not invent a zero.
How these figures are calculated
Each yearly SSA file lists given names with at least 5 occurrences, with a sex code of F or M and a count, sorted by count (then alphabetically on ties). A name’s yearly rank is its position in that list — the first record for each sex is rank 1. A decade figure on this page is the sum of those published yearly counts in the decade. Decade ranks use the same ordering on those sums: higher count first, then the name alphabetically, with sequential ranks.
The latest period is labeled 2020–2025 because 2025 is the latest published year. It is not a full decade. Names with fewer than 5 occurrences in a year are omitted from the official files, so a year that does not appear is not a published zero and is not filled in here.
The files describe “U.S. births where the individual has a Social Security Number,” tabulated from Social Security records as of March 1, 2026 (NationalReadMe.pdf in the official archive). Full citations, background, and limits are in the footer, including the official SSA names.zip and the SSA limits and background pages.