2010
#159,712
National surname rank
Recorded bearers 101
First available Census row
Per 100,000 0.03
Very Rare Last name
Bologa
A Romanian surname derived from the word "olog" meaning crippled or lame.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Bologa. That puts it at #154,182 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,904,698 residents).
This page is the full Name Census profile for the Bologa 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
118
1 in 2,904,698
Census rank
#154,182
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
103
very rare in the US
Popularity narrative
The Census Bureau recorded 103 bearers of the surname Bologa in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154182nd position in the national surname ranking.
Among Census respondents with the surname Bologa, the largest self-reported group is White at 74.8%. The next largest groups are Asian/Pacific Islander (19.4%) and Hispanic (3.9%).
Origin
Meaning and origin of Bologa
The surname Bologa originated in Romania and is believed to have roots dating back to the 15th century. It is derived from the Romanian word "bologa," which means "marsh" or "swamp," suggesting that the name may have been initially associated with people who lived near or worked in marshy areas.
One of the earliest recorded instances of the name Bologa can be found in a 16th-century Romanian document, where a person named Ion Bologa was mentioned as a landowner in the region of Transylvania. This suggests that the name had already gained some prominence in that area by that time.
In the 17th century, there are records of a Bologa family residing in the town of Sibiu, which was a significant cultural and economic center in Transylvania. It is possible that the family played a role in the town's development during that period.
The 18th century saw the rise of a notable figure named Gheorghe Bologa (1734-1801), who was a prominent Romanian scholar and educator. He was known for his contributions to the fields of linguistics and philosophy, and his works helped shape the intellectual landscape of his time.
Another distinguished individual bearing the Bologa surname was Dimitrie Bologa (1838-1903), a Romanian politician and statesman who served as the Minister of Finance and later as the Prime Minister of Romania in the late 19th century.
In more recent history, Valeriu Bologa (1892-1971) was a renowned Romanian botanist and plant taxonomist. He made significant contributions to the study of the flora of Romania and is recognized for his extensive work on the classification and identification of plant species.
Other notable individuals with the Bologa surname include Nicolae Bologa (1903-1976), a Romanian writer and literary critic, and Aurel Bologa (1908-1994), a prominent lawyer and legal scholar who played a pivotal role in shaping Romanian jurisprudence.
While the Bologa surname is primarily found in Romania, it has also spread to other parts of the world through migration and diaspora communities. However, its historical roots and earliest recorded instances can be traced back to the regions of Transylvania and other parts of Romania, where it has a long and rich heritage.
Demographics
Ancestry and ethnicity for Bologa
Among Census respondents with the surname Bologa, the largest self-reported group is White at 74.8%. The next largest groups are Asian/Pacific Islander (19.4%) and Hispanic (3.9%).
The bar chart below shows how Bologa 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 Bologa surname at the time of the 2020 Census, not any inherent property of the name itself.
- White74.8% · 77
- Asian and Pacific Islander19.4% · 20
- Hispanic or Latino3.9% · 4
- Black or African American1.0% · 1
- Two or more races1.0% · 1
Timeline
Historical Census data for Bologa
Bologa 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
#154,182
National surname rank
Recorded bearers 103
+2 bearers (+2.0%)
Per 100,000 0.03
Rank movement Up 5,530 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #159,712 | 101 | 0.03 | First available Census row | First available Census row |
| 2020 | #154,182 | 103 | 0.03 | +2 bearers (+2.0%) | Up 5,530 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 Bologa 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 | #159,712 | #154,182 | 3.5% |
| Count | 101 | 103 | 2.0% |
| Per 100K | 0.03 | 0.03 | 14.9% |
Between the 2010 and 2020 Census, the number of Bologa bearers went from 101 to 103 (+2.0% change). The surname moved up 5,530 positions in the national ranking, going from #159,712 to #154,182.
FAQ
Bologa surname: questions and answers
How many people in the U.S. have the surname Bologa?
Name Census estimates that about 118 living Americans carry the surname Bologa. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Bologa?
Bologa ranks #154,182 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 103 people with the surname Bologa. That is different from the site's living-bearer estimate (118), 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 Bologa.
Has Bologa become more or less common over time?
Between 2010 and 2020, the surname Bologa went from 101 recorded bearers to 103. That is an increase of 2 (+2.0%). In the national ranking it rose from #159,712 to #154,182.
What does the Census say about the background of Bologa?
Among Census respondents with the surname Bologa, the largest self-reported group is White at 74.8%. The next largest groups are Asian/Pacific Islander (19.4%) and Hispanic (3.9%). 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?
White is the largest self-reported group for the surname Bologa in the 2020 Census, accounting for 74.8% (77 people in the source table).
What is the full ancestry breakdown?
Bologa appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (74.8%), Asian/Pacific Islander (19.4%), Hispanic (3.9%). 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 Bologa (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 Bologa mean?
A Romanian surname derived from the word "olog" meaning crippled or lame. 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 Bologa (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 Bologa?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.