2000
#148,244
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.04
Very Rare Last name
Lopac
A surname derived from Slavic roots, possibly referring to someone who lived near a marsh or pond.
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Lopac. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Lopac 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
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Lopac in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Lopac, the largest self-reported group is White at 88.0%. The next largest groups are Hispanic (9.3%) and Two or More Races (1.9%).
Origin
Meaning and origin of Lopac
The surname LOPAC is believed to have originated in Croatia, with its roots dating back to the 14th century. The name is derived from the Old Croatian word "lopat," which translates to "shovel" or "spade," suggesting that the earliest bearers of this surname may have been associated with agricultural or digging professions.
One of the earliest recorded instances of the LOPAC surname can be found in a document from the Dubrovnik archives, dated 1387. This document mentions a Petar Lopac, who was a landowner in the region. The surname's spelling has remained relatively consistent throughout history, with minor variations such as Lopatz or Lopatch appearing occasionally.
During the 16th century, the LOPAC name gained prominence in the coastal regions of Dalmatia, particularly in the areas around Split and Sibenik. Several members of the LOPAC family were documented as skilled stonemasons and builders, contributing to the construction of notable structures and fortifications in these regions.
In the late 18th century, a Nikola LOPAC (1752-1823) was recognized as a prominent merchant and trader in the city of Dubrovnik. His successful business ventures and philanthropic efforts brought significant recognition to the LOPAC name within the local community.
Another notable figure bearing the LOPAC surname was Antun LOPAC (1867-1944), a Croatian writer and journalist who played a significant role in the cultural and literary scene of the late 19th and early 20th centuries. His works captured the essence of Dalmatian life and traditions, earning him widespread acclaim.
The LOPAC name also found its way into the annals of Croatian military history. During World War II, a Marko LOPAC (1914-1992) served as a decorated officer in the Partisan resistance movement against the Axis forces, contributing to the country's eventual liberation.
Throughout the centuries, the LOPAC surname has maintained a strong presence in various regions of Croatia, particularly in the coastal areas and the Dalmatian hinterland. While the name may not be as widespread as some other Croatian surnames, it has left an indelible mark on the country's history, culture, and traditions.
Demographics
Ancestry and ethnicity for Lopac
Among Census respondents with the surname Lopac, the largest self-reported group is White at 88.0%. The next largest groups are Hispanic (9.3%) and Two or More Races (1.9%).
The bar chart below shows how Lopac 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 Lopac surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.0% · 95
- Hispanic or Latino9.3% · 10
- Two or more races1.9% · 2
- Black or African American0.9% · 1
Timeline
Historical Census data for Lopac
Lopac 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
#151,532
National surname rank
Recorded bearers 108
+6 bearers (+5.9%)
Per 100,000 0.04
Rank movement Down 3,288 places
2020
#150,935
National surname rank
Recorded bearers 108
+0 bearers (+0.0%)
Per 100,000 0.04
Rank movement Up 597 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #148,244 | 102 | 0.04 | First available Census row | First available Census row |
| 2010 | #151,532 | 108 | 0.04 | +6 bearers (+5.9%) | Down 3,288 places |
| 2020 | #150,935 | 108 | 0.04 | +0 bearers (+0.0%) | Up 597 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 Lopac 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 | #151,532 | #150,935 | 0.4% |
| Count | 108 | 108 | 0.0% |
| Per 100K | 0.04 | 0.04 | -9.7% |
Between the 2010 and 2020 Census, the number of Lopac bearers went from 108 to 108 (+0.0% change). The surname moved up 597 positions in the national ranking, going from #151,532 to #150,935.
FAQ
Lopac surname: questions and answers
How many people in the U.S. have the surname Lopac?
Name Census estimates that about 124 living Americans carry the surname Lopac. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Lopac?
Lopac ranks #150,935 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 108 people with the surname Lopac. That is different from the site's living-bearer estimate (124), 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 Lopac.
Has Lopac become more or less common over time?
Between 2010 and 2020, the surname Lopac went from 108 recorded bearers to 108. That is an increase of 0 (+0.0%). In the national ranking it rose from #151,532 to #150,935.
What does the Census say about the background of Lopac?
Among Census respondents with the surname Lopac, the largest self-reported group is White at 88.0%. The next largest groups are Hispanic (9.3%) and Two or More Races (1.9%). 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 Lopac in the 2020 Census, accounting for 88.0% (95 people in the source table).
What is the full ancestry breakdown?
Lopac appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.0%), Hispanic (9.3%), Two or More Races (1.9%). 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 Lopac (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 Lopac mean?
A surname derived from Slavic roots, possibly referring to someone who lived near a marsh or pond. 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 Lopac (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 are called Lopac?
Want to know how common the surname Lopac is? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.