2010
#133,048
National surname rank
Recorded bearers 127
First available Census row
Per 100,000 0.04
Very Rare Last name
Delaconcha
A Spanish surname derived from "de la concha" meaning "from the conch/shell".
According to the 2020 US Census Bureau surname tables, roughly 116 Americans carry the last name Delaconcha. That puts it at #155,270 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,954,779 residents).
This page is the full Name Census profile for the Delaconcha 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
116
1 in 2,954,779
Census rank
#155,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
101
very rare in the US
Popularity narrative
The Census Bureau recorded 101 bearers of the surname Delaconcha in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155270th position in the national surname ranking.
Among Census respondents with the surname Delaconcha, the largest self-reported group is Hispanic at 92.1%. The next largest groups are Asian/Pacific Islander (5.9%) and White (1.0%).
Origin
Meaning and origin of Delaconcha
The surname DELACONCHA originated in Spain during the medieval period. It is derived from the Spanish phrase "de la concha," which translates to "of the shell" or "from the shell." This name likely referred to a person who lived near a seashell-shaped structure or landmark.
The earliest known record of the DELACONCHA surname dates back to the 13th century, when it appeared in a manuscript from the region of Andalusia, in southern Spain. This document mentioned a landowner named Juan de la Concha, who owned several properties near the coastal town of Cádiz.
In the 15th century, the DELACONCHA name emerged in various historical records from the Basque Country, a region straddling the border between Spain and France. It is believed that members of the family migrated from Andalusia to the Basque region during this time, possibly due to economic or political circumstances.
One notable figure bearing the DELACONCHA surname was Diego de la Concha (1468-1522), a Spanish explorer and navigator who accompanied Juan Ponce de León on his expeditions to the Caribbean islands and Florida. Diego de la Concha played a crucial role in mapping the coastlines and establishing settlements in the New World.
Another prominent individual was María de la Concha (1562-1631), a Spanish nun and mystic who founded the Order of the Immaculate Conception. She was known for her charitable works and spiritual teachings, and her life was documented in several religious texts of the time.
In the 18th century, the DELACONCHA family gained prominence in the Basque region, with several members serving as local officials and landowners. One such figure was Pedro de la Concha (1712-1789), a prominent merchant and shipowner based in the coastal town of San Sebastián.
During the 19th century, the DELACONCHA surname spread to various parts of Latin America, particularly to countries like Mexico and Argentina, due to Spanish colonization and migration. One notable individual from this period was José María de la Concha (1801-1875), a Mexican politician and military officer who served as the governor of several states.
Throughout history, the DELACONCHA surname has been associated with various professions, including seafaring, commerce, politics, and religious life. While the exact origin of the name remains uncertain, its connection to the Spanish word "concha" (shell) suggests a link to coastal regions and maritime activities.
Demographics
Ancestry and ethnicity for Delaconcha
Among Census respondents with the surname Delaconcha, the largest self-reported group is Hispanic at 92.1%. The next largest groups are Asian/Pacific Islander (5.9%) and White (1.0%).
The bar chart below shows how Delaconcha 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 Delaconcha surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino92.1% · 93
- Asian and Pacific Islander5.9% · 6
- White1.0% · 1
- Black or African American1.0% · 1
Timeline
Historical Census data for Delaconcha
Delaconcha appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#155,270
National surname rank
Recorded bearers 101
-26 bearers (-20.5%)
Per 100,000 0.03
Rank movement Down 22,222 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #133,048 | 127 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,270 | 101 | 0.03 | -26 bearers (-20.5%) | Down 22,222 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 Delaconcha 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 | #133,048 | #155,270 | -16.7% |
| Count | 127 | 101 | -20.5% |
| Per 100K | 0.04 | 0.03 | -15.5% |
Between the 2010 and 2020 Census, the number of Delaconcha bearers went from 127 to 101 (-20.5% change). The surname moved down 22,222 positions in the national ranking, going from #133,048 to #155,270.
FAQ
Delaconcha surname: questions and answers
How many people in the U.S. have the surname Delaconcha?
Name Census estimates that about 116 living Americans carry the surname Delaconcha. Using the current population baseline, that works out to roughly 1 in 2,954,779 residents.
How common is Delaconcha?
Delaconcha ranks #155,270 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 101 people with the surname Delaconcha. That is different from the site's living-bearer estimate (116), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Delaconcha.
Has Delaconcha become more or less common over time?
Between 2010 and 2020, the surname Delaconcha went from 127 recorded bearers to 101. That is a decrease of 26 (-20.5%). In the national ranking it fell from #133,048 to #155,270.
What does the Census say about the background of Delaconcha?
Among Census respondents with the surname Delaconcha, the largest self-reported group is Hispanic at 92.1%. The next largest groups are Asian/Pacific Islander (5.9%) and White (1.0%). 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 Delaconcha in the 2020 Census, accounting for 92.1% (93 people in the source table).
What is the full ancestry breakdown?
Delaconcha appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (92.1%), Asian/Pacific Islander (5.9%), White (1.0%). 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 Delaconcha (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 Delaconcha mean?
A Spanish surname derived from "de la concha" meaning "from the conch/shell". 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 Delaconcha (0.03 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 surname Delaconcha?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.