Boys name
Guillermo
Guillermo is a boys' name given to 28,981 boys in the United States since 1910, peaking in 1998 with 645 births. It has appeared in 35 states, and reached its highest rank of 86th among boys names in Arizona in 1915.
Which states favor Guillermo
Guillermo by state
Top states by all-time births named Guillermo. States with a full trend page are linked; the rest show all-time totals from the same SSA data.
| Rank | State | All-time births | Latest |
|---|---|---|---|
| 1 | California | 11,089 | #511 (2025) |
| 2 | Texas | 8,913 | #521 (2025) |
| 3 | Arizona | 1,516 | — |
| 4 | New York | 1,503 | — |
| 5 | Florida | 1,422 | — |
| 6 | Illinois | 1,334 | — |
| 7 | New Jersey | 476 | — |
| 8 | New Mexico | 448 | — |
| 9 | Colorado | 303 | — |
| 10 | Georgia | 302 | — |
| 11 | Washington | 299 | — |
| 12 | North Carolina | 243 | — |
| 13 | Nevada | 202 | — |
| 14 | Oregon | 131 | — |
| 15 | Virginia | 106 | — |
| 16 | Michigan | 79 | — |
| 17 | Oklahoma | 78 | — |
| 18 | Wisconsin | 67 | — |
| 19 | Utah | 65 | — |
| 20 | Kansas | 61 | — |
Source: U.S. Social Security Administration (public domain).