Boys name · California
Guillermo in California
As of 2025, Guillermo was the #511 most common boys name in California, drawn from 60 births that year. Its total reaches 11,089 across years with 5 or more births, the first being 1919.
Popularity over time
Guillermo in California, year by year
| Year | Babies | State rank |
|---|---|---|
| 1919 | 5 | #422 |
| 1935 | 11 | #314 |
| 1950 | 23 | #370 |
| 1965 | 65 | #299 |
| 1980 | 178 | #183 |
| 1995 | 282 | #180 |
| 2010 | 120 | #320 |
| 2025 | 60 | #511 |
Its rank among boys names in California ran from #169 in 1993 to #511 in 2025, starting at #422 in 1919 and ending at #511 in 2025.
No year in California had more Guillermo births than 1992, when 321 were born. In 1993 it reached #169, its highest boys-name rank in California.
Across the country, Guillermo reached its highest rank of #86 in Arizona (1915). See Guillermo in every state →
How popular is Guillermo in California?
As of 2025, Guillermo was the #511 most common boys name in California, drawn from 60 births that year. Its total reaches 11,089 across years with 5 or more births, the first being 1919.
How many babies are named Guillermo in California?
60 Guillermo babies were born in California in 2025.
What is the rank of Guillermo in California?
Guillermo ranked #511 among boys names in California in 2025.
Source: U.S. Social Security Administration, names by state of birth (public domain). Counts below 5 in a state-year are omitted by the SSA for privacy.