2000
#20,916
National surname rank
Recorded bearers 1,173
First available Census row
Per 100,000 0.43
Rare Last name
Siguenza
From a Spanish place name referring to a town in Guadalajara province.
According to the 2020 US Census Bureau surname tables, roughly 2,465 Americans carry the last name Siguenza. That puts it at #13,519 in the national surname ranking, appearing at a frequency of 0.72 per 100,000 people (about 1 in 139,048 residents).
This page is the full Name Census profile for the Siguenza 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
2.5K
1 in 139,048
Census rank
#13,519
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.1K
rare in the US
Popularity narrative
The Census Bureau recorded 2,150 bearers of the surname Siguenza in its 2020 decennial surname file. At a rate of 0.72 per 100,000 residents, it holds the 13519th position in the national surname ranking.
Among Census respondents with the surname Siguenza, the largest self-reported group is Hispanic at 87.7%. The next largest groups are White (5.4%) and Asian/Pacific Islander (5.1%).
Origin
Meaning and origin of Siguenza
The surname Siguenza originated in Spain, with roots dating back to the medieval period. The name is derived from the town of Sigüenza, located in the province of Guadalajara, Castile-La Mancha region. This toponym is believed to have its origins in the Latin word "sequentia," meaning "the following," potentially referring to its location along a Roman road or its proximity to a nearby settlement.
One of the earliest recorded mentions of the surname Siguenza can be found in the Codex Calixtinus, a 12th-century manuscript detailing the life of St. James and the pilgrimage route to Santiago de Compostela. The document includes references to individuals bearing this surname, suggesting its presence in the region during that time.
In the 13th century, a notable figure named Rodrigo Jiménez de Rada, also known as Rodrigo de Siguenza (c. 1170-1247), emerged as a prominent historian, prelate, and statesman. He served as the Archbishop of Toledo and is celebrated for his influential work, "De Rebus Hispaniae," which chronicled the history of Spain.
During the 15th century, the surname gained further prominence with Juan Gonzalez de Siguenza (c. 1420-1491), a Spanish theologian and philosopher. He held the position of Chancellor at the University of Salamanca and authored several theological treatises, contributing to the intellectual discourse of his era.
In the 16th century, the name appeared in the records of the Spanish Inquisition, with a mention of Juan de Siguenza, a cleric from Sigüenza who faced persecution for his alleged involvement in heretical activities.
Another notable figure bearing the surname was José de Siguenza (1544-1606), a Spanish historian and writer who served as the official chronicler of the Order of St. Jerome. His works, such as "Historia de la Orden de San Jerónimo" and "Vida de San Jerónimo," provided valuable insights into the religious and cultural history of Spain.
The surname Siguenza continued to be associated with scholarly and intellectual pursuits in the 17th century, with figures like José de Siguenza y Góngora (1612-1692), a Mexican scholar, writer, and poet. He played a significant role in the cultural and literary life of New Spain, contributing to the development of the Mexican baroque literature.
Throughout its history, the surname Siguenza has been carried by individuals from various walks of life, including clergy, scholars, writers, and individuals involved in the cultural and intellectual spheres of Spain and its territories. While its origins can be traced back to the medieval period, the name has persisted and evolved, reflecting the rich tapestry of Spanish history and heritage.
Demographics
Ancestry and ethnicity for Siguenza
Among Census respondents with the surname Siguenza, the largest self-reported group is Hispanic at 87.7%. The next largest groups are White (5.4%) and Asian/Pacific Islander (5.1%).
The bar chart below shows how Siguenza 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 Siguenza surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino87.7% · 1,885
- White5.4% · 117
- Asian and Pacific Islander5.1% · 109
- Two or more races1.1% · 24
- Black or African American0.7% · 15
Timeline
Historical Census data for Siguenza
Siguenza 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
#15,255
National surname rank
Recorded bearers 1,927
+754 bearers (+64.3%)
Per 100,000 0.65
Rank movement Up 5,661 places
2020
#13,519
National surname rank
Recorded bearers 2,150
+223 bearers (+11.6%)
Per 100,000 0.72
Rank movement Up 1,736 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #20,916 | 1,173 | 0.43 | First available Census row | First available Census row |
| 2010 | #15,255 | 1,927 | 0.65 | +754 bearers (+64.3%) | Up 5,661 places |
| 2020 | #13,519 | 2,150 | 0.72 | +223 bearers (+11.6%) | Up 1,736 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 Siguenza 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 | #15,255 | #13,519 | 11.4% |
| Count | 1,927 | 2,150 | 11.6% |
| Per 100K | 0.65 | 0.72 | 10.7% |
Between the 2010 and 2020 Census, the number of Siguenza bearers went from 1,927 to 2,150 (+11.6% change). The surname moved up 1,736 positions in the national ranking, going from #15,255 to #13,519.
FAQ
Siguenza surname: questions and answers
How many people in the U.S. have the surname Siguenza?
Name Census estimates that about 2,465 living Americans carry the surname Siguenza. Using the current population baseline, that works out to roughly 1 in 139,048 residents.
How common is Siguenza?
Siguenza ranks #13,519 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.72 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,150 people with the surname Siguenza. That is different from the site's living-bearer estimate (2,465), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.72 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.72 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Siguenza.
Has Siguenza become more or less common over time?
Between 2010 and 2020, the surname Siguenza went from 1,927 recorded bearers to 2,150. That is an increase of 223 (+11.6%). In the national ranking it rose from #15,255 to #13,519.
What does the Census say about the background of Siguenza?
Among Census respondents with the surname Siguenza, the largest self-reported group is Hispanic at 87.7%. The next largest groups are White (5.4%) and Asian/Pacific Islander (5.1%). 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 Siguenza in the 2020 Census, accounting for 87.7% (1,885 people in the source table).
What is the full ancestry breakdown?
Siguenza appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (87.7%), White (5.4%), Asian/Pacific Islander (5.1%). 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 Siguenza (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 Siguenza mean?
From a Spanish place name referring to a town in Guadalajara province. 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 Siguenza (0.72 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 Americans have the surname Siguenza?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.