Mason was the second-most-popular boys' name in America in 2011, just behind Jacob. By 2024, it has fallen out of the top 40. The arc — from #2 to #42 in thirteen years — is one of the most dramatic single-name declines in the modern SSA record.
From Norman trade name to Kardashian-era explosion
Mason is an Old French occupational surname meaning "stone worker" or "bricklayer" — derived from the Old French maçon. The name carried as an English-language surname for centuries with effectively no first-name tradition. The first-name conversion is a 20th-century American phenomenon.
The 2011 peak corresponds almost exactly with Kourtney Kardashian naming her son Mason in December 2009. Reading the timing as a marketer, Mason is one of the cleanest celebrity-baby effects in the SSA data — a name that was already rising tracking, then accelerating sharply after a high-visibility cultural moment, then falling steeply once the broader cohort moved on.
The cohort dynamics
Mason was the bellwether for the surname-style first names that defined late-2000s and 2010s American boys' naming. The cluster — Mason, Jackson, Grayson, Hudson, Carter — moved as a coordinated wave, with each name peaking in succession over a fifteen-year period.
From a segmentation read, Mason captured a specific parent demographic: families looking for a contemporary, professionally-coded, vaguely upscale name that didn't carry obvious religious or ethnic anchoring. The strength of that audience explains both the rapid rise and the rapid fall — when the demographic moved on (to Grayson, then Hudson, then beyond), Mason was left in their wake.
The counter-reading: is Mason now a vintage name?
The conventional 2025 framing treats Mason as a faded trend-name aging out of fashion. The data adds context. Mason has fallen sharply from its 2011 peak but has stabilised in the top 50 for the past three years, suggesting the decline is settling rather than continuing into freefall. The name has converted from "hot trend" to "established 2010s name," which is a different position from "declining."
For parents weighing Mason in 2025, the name now carries a generational signal — a Mason today will be strongly associated with men currently in their early teens and 20s. That's not a flaw, but it's worth understanding. The occupational origin ("stone worker") gives the name a working-class craft heritage that some parents specifically appreciate, particularly those drawn to surname-style names with concrete trade meanings (compare to Cooper, "barrel maker"). Common pairings on naming forums: Mason James, Mason Cole, Mason Reed.