2000
#8,633
National surname rank
Recorded bearers 3,506
First available Census row
Per 100,000 1.30
Rare Last name
Guadarrama
A toponymic surname referring to someone from the Guadarrama mountain range in central Spain.
According to the 2020 US Census Bureau surname tables, roughly 6,715 Americans carry the last name Guadarrama. That puts it at #5,703 in the national surname ranking, appearing at a frequency of 1.96 per 100,000 people (about 1 in 51,043 residents).
This page is the full Name Census profile for the Guadarrama surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
6.7K
1 in 51,043
Census rank
#5,703
2020 decennial data
Per 100,000
2.0
Frequency rate
Recorded bearers
5.9K
rare in the US
Popularity narrative
The Census Bureau recorded 5,856 bearers of the surname Guadarrama in its 2020 decennial surname file. At a rate of 1.96 per 100,000 residents, it holds the 5703rd position in the national surname ranking.
Among Census respondents with the surname Guadarrama, the largest self-reported group is Hispanic at 96.7%. The next largest groups are White (2.8%) and Asian/Pacific Islander (0.2%).
Origin
Meaning and origin of Guadarrama
The surname Guadarrama is of Spanish origin, derived from the municipality of Guadarrama, located in the Community of Madrid, Spain. The name itself is believed to be of Arabic descent, stemming from the word "Wadi-ar-Ramla," which translates to "sandy river valley."
Guadarrama was first documented in the 12th century, during the Reconquista period, when Christian forces were reclaiming territories from the Moors. The name is closely tied to the Sierra de Guadarrama mountain range, which runs through the municipality of the same name.
One of the earliest recorded individuals with the surname Guadarrama was Pedro de Guadarrama, a 14th-century Spanish nobleman who served as a military commander during the reign of King Alfonso XI. He played a crucial role in the Battle of Río Salado in 1340, where he led troops against the Marinid Berbers.
In the 16th century, Juan de Guadarrama was a renowned architect who contributed to the construction of several notable buildings in Madrid, including the Monasterio de las Descalzas Reales and the Palacio de Aranjuez.
During the colonial era, the Guadarrama surname was carried to the Americas by Spanish settlers. One notable figure was Hernán de Guadarrama, a 17th-century conquistador who participated in the exploration and conquest of present-day Mexico and Guatemala.
Another prominent individual was María de Guadarrama, a 17th-century Spanish painter known for her religious works, which adorned churches and convents throughout Spain. Her artwork is still preserved in various museums and galleries.
In the 19th century, Enrique Guadarrama was a Mexican politician and military officer who fought in the Mexican-American War (1846-1848) and later served as a senator in the Mexican Congress.
Throughout history, the Guadarrama surname has been associated with various professions, including military personnel, architects, artists, and politicians. While the name originated in Spain, it has since spread globally due to migration and historical events.
Demographics
Ancestry and ethnicity for Guadarrama
Among Census respondents with the surname Guadarrama, the largest self-reported group is Hispanic at 96.7%. The next largest groups are White (2.8%) and Asian/Pacific Islander (0.2%).
The bar chart below shows how Guadarrama bearers 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 surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Guadarrama surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino96.7% · 5,662
- White2.8% · 166
- Asian and Pacific Islander0.2% · 10
- Black or African American0.1% · 7
- Two or more races0.1% · 6
- American Indian and Alaska Native0.1% · 5
Timeline
Historical Census data for Guadarrama
Guadarrama appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#5,767
National surname rank
Recorded bearers 6,006
+2,500 bearers (+71.3%)
Per 100,000 2.04
Rank movement Up 2,866 places
2020
#5,703
National surname rank
Recorded bearers 5,856
-150 bearers (-2.5%)
Per 100,000 1.96
Rank movement Up 64 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #8,633 | 3,506 | 1.30 | First available Census row | First available Census row |
| 2010 | #5,767 | 6,006 | 2.04 | +2,500 bearers (+71.3%) | Up 2,866 places |
| 2020 | #5,703 | 5,856 | 1.96 | -150 bearers (-2.5%) | Up 64 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Guadarrama surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #5,767 | #5,703 | 1.1% |
| Count | 6,006 | 5,856 | -2.5% |
| Per 100K | 2.04 | 1.96 | -4.0% |
Between the 2010 and 2020 Census, the number of Guadarrama bearers went from 6,006 to 5,856 (-2.5% change). The surname moved up 64 positions in the national ranking, going from #5,767 to #5,703.
FAQ
Guadarrama surname: questions and answers
How many people in the U.S. have the surname Guadarrama?
Name Census estimates that about 6,715 living Americans carry the surname Guadarrama. Using the current population baseline, that works out to roughly 1 in 51,043 residents.
How common is Guadarrama?
Guadarrama ranks #5,703 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.96 per 100,000 residents, which is about 2 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 5,856 people with the surname Guadarrama. That is different from the site's living-bearer estimate (6,715), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.96 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.96 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 2 of them to have the surname Guadarrama.
Has Guadarrama become more or less common over time?
Between 2010 and 2020, the surname Guadarrama went from 6,006 recorded bearers to 5,856. That is a decrease of 150 (-2.5%). In the national ranking it rose from #5,767 to #5,703.
What does the Census say about the background of Guadarrama?
Among Census respondents with the surname Guadarrama, the largest self-reported group is Hispanic at 96.7%. The next largest groups are White (2.8%) and Asian/Pacific Islander (0.2%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
Hispanic is the largest self-reported group for the surname Guadarrama in the 2020 Census, accounting for 96.7% (5,662 people in the source table).
What is the full ancestry breakdown?
Guadarrama appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (96.7%), White (2.8%), Asian/Pacific Islander (0.2%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Guadarrama (2000, 2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Guadarrama mean?
A toponymic surname referring to someone from the Guadarrama mountain range in central Spain. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Guadarrama (1.96 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people have the last name Guadarrama?
If you just want to know how many people have the last name Guadarrama, HowManyOfMe.org gives you the headline number in one glance.