2000
#138,741
National surname rank
Recorded bearers 111
First available Census row
Per 100,000 0.04
Very Rare Last name
Blashka
A Ukrainian variant of the Polish surname Błaszka related to tin or metalwork.
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Blashka. 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 Blashka 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 Blashka 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 Blashka, the largest self-reported group is White at 90.9%. The next largest groups are Two or More Races (6.6%) and Hispanic (1.7%).
Origin
Meaning and origin of Blashka
The surname BLASHKA is believed to have originated in Eastern Europe, specifically in the region that is now modern-day Poland and Ukraine. The name likely dates back to the 16th or 17th century and is thought to be derived from the Slavic word "blasch," which means "marshy" or "swampy." This suggests that the name may have been associated with people who lived in or near marshy or swampy areas.
One of the earliest recorded references to the name BLASHKA can be found in a Polish parish register from the late 17th century. The entry mentions a Jan Blashka, who was born in a small village near the city of Krakow in 1679. Another early record comes from the Ukrainian town of Lviv, where a family with the surname BLASHKA is mentioned in a land deed from 1713.
In the 18th century, the name BLASHKA began to appear in other parts of Eastern Europe, particularly in the areas that were part of the Austro-Hungarian Empire. Some notable individuals with this surname from this period include Petro Blashka (1732-1801), a Ukrainian farmer and landowner, and Frantisek Blashka (1760-1828), a Czech artist known for his landscape paintings.
As the 19th century dawned, the BLASHKA name started to spread further west into Europe. One of the most famous bearers of this surname was the German-born explorer and naturalist Hermann Blashka (1821-1892), who is credited with discovering several new species of plants and animals in South America.
Another notable figure was the Polish-born composer and pianist Ignacy Blashka (1842-1909), who gained fame for his virtuosic performances and compositions in the Romantic style. Towards the end of the 19th century, the BLASHKA surname also made its way to North America, with several families immigrating from Eastern Europe to the United States and Canada.
In the 20th century, one of the most prominent individuals with the BLASHKA surname was the Polish-American inventor and engineer Mieczyslaw Blashka (1901-1985), who held numerous patents for his innovations in the field of electronic engineering. Another notable figure was the Ukrainian-Canadian artist and sculptor Oleksandr Blashka (1919-2002), whose works were widely exhibited and celebrated in both Ukraine and Canada.
Demographics
Ancestry and ethnicity for Blashka
Among Census respondents with the surname Blashka, the largest self-reported group is White at 90.9%. The next largest groups are Two or More Races (6.6%) and Hispanic (1.7%).
The bar chart below shows how Blashka 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 Blashka surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.9% · 110
- Two or more races6.6% · 8
- Hispanic or Latino1.7% · 2
- Black or African American0.8% · 1
Timeline
Historical Census data for Blashka
Blashka 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
#141,140
National surname rank
Recorded bearers 118
+7 bearers (+6.3%)
Per 100,000 0.04
Rank movement Down 2,399 places
2020
#141,309
National surname rank
Recorded bearers 121
+3 bearers (+2.5%)
Per 100,000 0.04
Rank movement Down 169 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #138,741 | 111 | 0.04 | First available Census row | First available Census row |
| 2010 | #141,140 | 118 | 0.04 | +7 bearers (+6.3%) | Down 2,399 places |
| 2020 | #141,309 | 121 | 0.04 | +3 bearers (+2.5%) | Down 169 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 Blashka 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 | #141,140 | #141,309 | -0.1% |
| Count | 118 | 121 | 2.5% |
| Per 100K | 0.04 | 0.04 | 1.2% |
Between the 2010 and 2020 Census, the number of Blashka bearers went from 118 to 121 (+2.5% change). The surname moved down 169 positions in the national ranking, going from #141,140 to #141,309.
FAQ
Blashka surname: questions and answers
How many people in the U.S. have the surname Blashka?
Name Census estimates that about 139 living Americans carry the surname Blashka. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Blashka?
Blashka 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 Blashka. 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 Blashka.
Has Blashka become more or less common over time?
Between 2010 and 2020, the surname Blashka went from 118 recorded bearers to 121. That is an increase of 3 (+2.5%). In the national ranking it fell from #141,140 to #141,309.
What does the Census say about the background of Blashka?
Among Census respondents with the surname Blashka, the largest self-reported group is White at 90.9%. The next largest groups are Two or More Races (6.6%) and Hispanic (1.7%). 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 Blashka in the 2020 Census, accounting for 90.9% (110 people in the source table).
What is the full ancestry breakdown?
Blashka appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.9%), Two or More Races (6.6%), Hispanic (1.7%). 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 Blashka (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 Blashka mean?
A Ukrainian variant of the Polish surname Błaszka related to tin or metalwork. 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 Blashka (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 Blashka?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.