2010
#148,347
National surname rank
Recorded bearers 111
First available Census row
Per 100,000 0.04
Very Rare Last name
Ostrea
A surname derived from the Latin "ostrea" meaning oyster.
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Ostrea. That puts it at #141,309 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,465,859 residents).
This page is the full Name Census profile for the Ostrea 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
139
1 in 2,465,859
Census rank
#141,309
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
121
very rare in the US
Popularity narrative
The Census Bureau recorded 121 bearers of the surname Ostrea in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 141309th position in the national surname ranking.
Among Census respondents with the surname Ostrea, the largest self-reported group is Asian/Pacific Islander at 70.2%. The next largest groups are White (11.6%) and Two or More Races (11.6%).
Origin
Meaning and origin of Ostrea
The surname "OSTREA" is believed to have originated in Italy, specifically in the coastal regions near the Adriatic Sea. It is derived from the Latin word "ostrea," which means "oyster." This suggests that the name may have originally been associated with those who worked in the oyster trade or lived in areas known for oyster harvesting.
One of the earliest recorded instances of the name can be found in the 13th century, when it appeared in a medieval Italian document from the city of Chioggia, near Venice. This document referred to a family with the surname "Ostrea," who were involved in the local oyster industry.
In the 15th century, the name "Ostrea" was also mentioned in a historical record from the city of Rimini, located along the Adriatic coast. This record detailed a fishing dispute between local fishermen and a family bearing the Ostrea surname, further solidifying the connection between the name and the oyster trade.
One notable individual with the surname "Ostrea" was Giovanni Ostrea, a successful merchant from Venice who lived in the late 16th century. He was known for his extensive trade networks and his involvement in the import and export of various goods, including oysters and other seafood.
In the 17th century, the name "Ostrea" appeared in a historical document from the city of Ancona, where it referred to a family of fishermen and oyster farmers. This document provided valuable insight into the daily lives and traditions of those involved in the oyster industry during that time period.
Another prominent figure with the surname "Ostrea" was Adriana Ostrea, a noblewoman from the Italian city of Ravenna, who lived in the early 18th century. She was known for her generous patronage of the arts and her support of local artists and intellectuals.
Throughout the centuries, the surname "Ostrea" has been found in various coastal regions of Italy, reflecting the name's origins and connection to the oyster trade and coastal communities. While the name may have evolved and spread to other parts of the world over time, its roots can be traced back to the Adriatic coast of Italy and the historical significance of the oyster industry in that region.
Demographics
Ancestry and ethnicity for Ostrea
Among Census respondents with the surname Ostrea, the largest self-reported group is Asian/Pacific Islander at 70.2%. The next largest groups are White (11.6%) and Two or More Races (11.6%).
The bar chart below shows how Ostrea 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 Ostrea surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander70.2% · 85
- White11.6% · 14
- Two or more races11.6% · 14
- Hispanic or Latino5.8% · 7
- American Indian and Alaska Native0.8% · 1
Timeline
Historical Census data for Ostrea
Ostrea 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
#141,309
National surname rank
Recorded bearers 121
+10 bearers (+9.0%)
Per 100,000 0.04
Rank movement Up 7,038 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #148,347 | 111 | 0.04 | First available Census row | First available Census row |
| 2020 | #141,309 | 121 | 0.04 | +10 bearers (+9.0%) | Up 7,038 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 Ostrea 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 | #148,347 | #141,309 | 4.7% |
| Count | 111 | 121 | 9.0% |
| Per 100K | 0.04 | 0.04 | 1.2% |
Between the 2010 and 2020 Census, the number of Ostrea bearers went from 111 to 121 (+9.0% change). The surname moved up 7,038 positions in the national ranking, going from #148,347 to #141,309.
FAQ
Ostrea surname: questions and answers
How many people in the U.S. have the surname Ostrea?
Name Census estimates that about 139 living Americans carry the surname Ostrea. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Ostrea?
Ostrea ranks #141,309 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 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 121 people with the surname Ostrea. That is different from the site's living-bearer estimate (139), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 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 Ostrea.
Has Ostrea become more or less common over time?
Between 2010 and 2020, the surname Ostrea went from 111 recorded bearers to 121. That is an increase of 10 (+9.0%). In the national ranking it rose from #148,347 to #141,309.
What does the Census say about the background of Ostrea?
Among Census respondents with the surname Ostrea, the largest self-reported group is Asian/Pacific Islander at 70.2%. The next largest groups are White (11.6%) and Two or More Races (11.6%). 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?
Asian/Pacific Islander is the largest self-reported group for the surname Ostrea in the 2020 Census, accounting for 70.2% (85 people in the source table).
What is the full ancestry breakdown?
Ostrea appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (70.2%), White (11.6%), Two or More Races (11.6%). 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 Ostrea (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 Ostrea mean?
A surname derived from the Latin "ostrea" meaning oyster. 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 Ostrea (0.04 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 Ostrea?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.