Guillermo vs Ethan
How Guillermo and Ethan compare across 146 years of US Social Security Administration baby-name records — popularity history, peak years, current rank, and which name overtook which.
US Popularity History — Side-by-Side
Annual US births named Guillermo (boys) vs Ethan (boys), from US Social Security Administration national records.
Source: US Social Security Administration. Names appearing fewer than 5 times per year are suppressed by SSA.
Quick Stats
| Metric | Guillermo | Ethan |
|---|---|---|
| Peak year (most US births) | 2000 — 651 boys | 2004 — 22,210 boys |
| Peak rank | #392 | #5 |
| Most recent rank (2025) | #902 (264 births) | #24 (7,852 births) |
| Total US births since 1880 | 11,424 | 472,430 |
| Last 10 years (2016–2025) | 2,959 | 100,110 |
Peak comparison takeaway
At its all-time peak, Ethan reached 22,210 US births in 2004 — 21,559 more than Guillermo's peak count.
Strongest States — Last 10 Years
States where each name ranked highest, from SSA's state-level dataset. Lower average rank = name appears closer to the top of that state's boys-name list.
Guillermo — top 5 states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | New Mexico | #380 | 16 |
| 2 | Nevada | #425 | 29 |
| 3 | Arizona | #431 | 156 |
| 4 | Texas | #434 | 700 |
| 5 | California | #454 | 675 |
Ethan — top 5 states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | Maryland | #7 | 1,997 |
| 2 | New York | #7 | 7,360 |
| 3 | California | #8 | 15,578 |
| 4 | Florida | #10 | 6,485 |
| 5 | New Jersey | #11 | 3,198 |
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Data & methodology
Source: US Social Security Administration national baby names dataset 1880–2025 (CC0 public domain). Names with fewer than 5 occurrences in a given year are suppressed by SSA. State-level coverage runs 1910–2025. Crossover detection compares annual birth counts (not ranks) for each year both names appear. Methodology: see full notes. More comparisons →