Guillermina
Feminine form of William, a German name meaning "resolute protection".
Name Census estimates that about 1,466 living Americans carry the first name Guillermina. The name is used almost exclusively for girls. The average person named Guillermina today is around 49 years old, and the year with the single highest number of Guillermina births was 1966 (40 babies).
This page is the full Name Census profile for Guillermina. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
People living today
1.5K
~ 1 in 233,802 Americans
Peak year
1966
40 babies that year
Average age
49
years old
2024 SSA rank
#14,023
Tracked since 1918
Census
Guillermina in the 2020 Census
The 2020 Census recorded 13,990 people with the first name Guillermina, which placed it at #1,978 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#1,978
National first-name rank
People counted
14K
13,990 in the published race/origin table
Per 100,000
4.6
People with this name in 2020
Largest reported group
Hispanic or Latino
98.8% of people with this name
Demographics
Ancestry and ethnicity for Guillermina
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Guillermina is Hispanic at 98.8%. The next largest groups are White (0.7%) and Asian/Pacific Islander (0.3%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Guillermina described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Guillermina at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino98.8% · 13,827
- White0.7% · 92
- Asian and Pacific Islander0.3% · 44
- Black or African American0.1% · 18
- Two or more races0.0% · 6
- American Indian and Alaska Native0.0% · 3
Popularity
Guillermina: popularity over time
The SSA tracks Guillermina from the 1910s through to the 2020s, spanning 12 decades of birth certificate data. The biggest single decade for the name was the 1970s, with 350 total registrations. Usage has dropped considerably from its 1970s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Guillermina by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Guillermina during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Guillerminas live
The SSA's state-level files cover 4 states and territories. California, Texas, Illinois recorded the most babies named Guillermina, while Arizona, Illinois, Texas recorded the fewest. The average across all reporting states is about 310 registrations each.
Origin
Meaning and history of Guillermina
Guillermina is a feminine name derived from the Spanish name Guillermo, which in turn comes from the Germanic name Willahelm. The name Willahelm is made up of two elements: "wil" meaning "will" or "desire," and "helm" meaning "protection" or "helmet." This combination suggests the meaning of "resolute protector" or "strong-willed warrior."
The name Guillermo entered the Spanish language during the Middle Ages, brought by the Visigoths who settled in the Iberian Peninsula. It gained prominence as the name of several Spanish kings, such as William I of Navarre (c. 1017-1063) and William II of Sicily (c. 1153-1189).
One of the earliest recorded instances of the feminine form Guillermina dates back to the 13th century. It appears in a document from the Kingdom of Aragon, referring to a noblewoman named Guillermina de Cardona.
Throughout history, several notable women have borne the name Guillermina. One of the most famous was Wilhelmina of Prussia (1751-1820), a Princess of Prussia who became the first Queen of the Netherlands upon the establishment of the Kingdom of the Netherlands in 1815.
Another prominent Guillermina was Guillermina Medrano (1913-2005), a Mexican artist and activist known for her murals depicting scenes of Mexican history and culture. She was a prominent figure in the Mexican Muralism movement of the 20th century.
In the world of literature, Guillermina Arango (1929-2018) was a renowned Colombian poet and essayist. Her works explored themes of love, nature, and the human condition, earning her numerous literary awards and recognition throughout Latin America.
Guillermina Rojas (1920-2017) was a pioneering Cuban actress and television personality. She starred in numerous films and telenovelas, becoming a beloved cultural icon in her home country and throughout the Spanish-speaking world.
Lastly, Guillermina Bravo (1920-2013) was a Mexican sculptor and painter known for her abstract and surrealist works. Her art was exhibited in galleries across Mexico and internationally, and she is considered one of the most influential Mexican artists of the 20th century.
People
Guillermina + last name combinations
How many people share a full name with Guillermina as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with G
Other first names starting with G with a similar number of bearers.
FAQ
Guillermina: questions and answers
How many people in the U.S. are named Guillermina?
Name Census puts the figure at roughly 1,466 living Americans. We arrive at this by taking every SSA birth registration for Guillermina going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 233,802 US residents.
Is Guillermina a common name?
We classify Guillermina as "Rare". It ranks above 92.3% of all first names in the SSA dataset by living bearers. Across the full history of the data, 1,924 babies have been registered with this name.
When was Guillermina most popular?
The single biggest year for Guillermina was 1966, when 40 babies received the name. The fact that the average living Guillermina is about 49 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Guillermina in the 2020 Census?
The published 2020 Census first-name tables recorded 13,990 people with the name Guillermina, or 4.63 per 100,000 residents. That placed it at #1,978 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Guillermina in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Guillermina?
In the 2020 Census sex table, Guillermina appears almost entirely female. Of the 13,994 people counted with this name, 99.7% were female and only a very small share were male. The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Guillermina?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Guillermina is Hispanic at 98.8%. The next largest groups are White (0.7%) and Asian/Pacific Islander (0.3%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Guillermina most often in the Census?
Hispanic is the largest reported group for people named Guillermina in the 2020 Census, accounting for 98.8% (13,827 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Guillermina in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Guillermina a female name?
Yes, 100.0% of people registered as Guillermina in the SSA data are female. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Guillermina still being used today?
Yes. The SSA still recorded Guillermina in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Guillermina can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How common is the name Guillermina?
You can see how many Americans are named Guillermina on our sister site HowManyOfMe.org — same data roots, lighter UI.