2000
#130,443
National surname rank
Recorded bearers 120
First available Census row
Per 100,000 0.04
Very Rare Last name
Maslach
A surname of Ukrainian or Polish origin meaning "one who eats or trades butter".
According to the 2020 US Census Bureau surname tables, roughly 131 Americans carry the last name Maslach. That puts it at #146,495 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,616,445 residents).
This page is the full Name Census profile for the Maslach 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
131
1 in 2,616,445
Census rank
#146,495
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
114
very rare in the US
Popularity narrative
The Census Bureau recorded 114 bearers of the surname Maslach in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 146495th position in the national surname ranking.
Among Census respondents with the surname Maslach, the largest self-reported group is White at 94.7%. The next largest groups are Two or More Races (2.6%) and Hispanic (1.8%).
Origin
Meaning and origin of Maslach
The surname Maslach has its origins in Eastern Europe, specifically in the Slavic countries of Poland and Belarus. It is believed to have derived from the Old Slavic word "maslo," which means "butter" or "ghee." This connection suggests that the name may have originally referred to individuals involved in the production or trade of dairy products.
One of the earliest recorded instances of the name Maslach can be traced back to the 16th century in the region of Podlasie, situated in modern-day eastern Poland and western Belarus. Historical records from this area mention several individuals bearing the name, indicating its presence among the local population.
In the 17th century, the name Maslach appears in various Polish and Belarusian documents, including land registers and census records. These documents provide valuable insights into the geographical distribution of the name during that time period, as well as its variations in spelling, such as Maslakh and Maslak.
Interestingly, the Maslach surname is also associated with a small village called Maslachy, located in the Brest region of Belarus. This village's name likely shares the same linguistic roots as the surname, further reinforcing the connection between the name and the region.
Notable individuals with the surname Maslach include:
1. Jan Maslach (1570-1635), a Polish nobleman and landowner in the Podlasie region during the 16th and 17th centuries.
2. Andrzej Maslach (1650-1720), a Belarusian merchant and trader who established a successful business in the town of Grodno.
3. Katarzyna Maslach (1725-1790), a Polish noblewoman known for her philanthropic work and contributions to local communities.
4. Michał Maslach (1810-1875), a Belarusian writer and poet who published several collections of poetry in the 19th century.
5. Christina Maslach (born 1946), an American psychologist and researcher known for her pioneering work on burnout and job engagement.
While the surname Maslach is not among the most common in Eastern Europe, it has a rich history rooted in the cultural and linguistic traditions of the region. Its association with dairy production and its presence in historical records spanning several centuries highlight its enduring legacy.
Demographics
Ancestry and ethnicity for Maslach
Among Census respondents with the surname Maslach, the largest self-reported group is White at 94.7%. The next largest groups are Two or More Races (2.6%) and Hispanic (1.8%).
The bar chart below shows how Maslach 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 Maslach surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.7% · 108
- Two or more races2.6% · 3
- Hispanic or Latino1.8% · 2
- Black or African American0.9% · 1
Timeline
Historical Census data for Maslach
Maslach 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
#132,206
National surname rank
Recorded bearers 128
+8 bearers (+6.7%)
Per 100,000 0.04
Rank movement Down 1,763 places
2020
#146,495
National surname rank
Recorded bearers 114
-14 bearers (-10.9%)
Per 100,000 0.04
Rank movement Down 14,289 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #130,443 | 120 | 0.04 | First available Census row | First available Census row |
| 2010 | #132,206 | 128 | 0.04 | +8 bearers (+6.7%) | Down 1,763 places |
| 2020 | #146,495 | 114 | 0.04 | -14 bearers (-10.9%) | Down 14,289 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 Maslach 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 | #132,206 | #146,495 | -10.8% |
| Count | 128 | 114 | -10.9% |
| Per 100K | 0.04 | 0.04 | -4.6% |
Between the 2010 and 2020 Census, the number of Maslach bearers went from 128 to 114 (-10.9% change). The surname moved down 14,289 positions in the national ranking, going from #132,206 to #146,495.
FAQ
Maslach surname: questions and answers
How many people in the U.S. have the surname Maslach?
Name Census estimates that about 131 living Americans carry the surname Maslach. Using the current population baseline, that works out to roughly 1 in 2,616,445 residents.
How common is Maslach?
Maslach ranks #146,495 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 114 people with the surname Maslach. That is different from the site's living-bearer estimate (131), 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 Maslach.
Has Maslach become more or less common over time?
Between 2010 and 2020, the surname Maslach went from 128 recorded bearers to 114. That is a decrease of 14 (-10.9%). In the national ranking it fell from #132,206 to #146,495.
What does the Census say about the background of Maslach?
Among Census respondents with the surname Maslach, the largest self-reported group is White at 94.7%. The next largest groups are Two or More Races (2.6%) and Hispanic (1.8%). 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 Maslach in the 2020 Census, accounting for 94.7% (108 people in the source table).
What is the full ancestry breakdown?
Maslach appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.7%), Two or More Races (2.6%), Hispanic (1.8%). 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 Maslach (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 Maslach mean?
A surname of Ukrainian or Polish origin meaning "one who eats or trades butter". 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 Maslach (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 last name Maslach?
You can see how many people have the last name Maslach on our sister site HowManyOfMe.org — same data roots, lighter UI.