2010
#150,452
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Mydlowski
A Polish surname derived from the word "mydło" meaning "soap."
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Mydlowski. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Mydlowski 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Mydlowski in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Mydlowski, the largest self-reported group is White at 95.7%. The next largest groups are Two or More Races (3.5%) and Hispanic (0.9%).
Origin
Meaning and origin of Mydlowski
The surname Mydlowski originates from Poland and can be traced back to the 16th century. It is derived from the Polish word "mydlo," which translates to "soap." The name was likely given to an individual or family involved in the production or trade of soap.
Records show the Mydlowski name appearing in the town of Krakow, Poland, in the late 1500s. The earliest known individual with this surname was Jan Mydlowski, a soap maker born in 1572 in the village of Myslowice, near Krakow. He is mentioned in the town's guild records from 1598.
Another early reference to the Mydlowski name is found in the Metryka Koronna, a collection of Polish royal chancery documents from the 16th and 17th centuries. In 1612, a Jan Mydlowski is listed as a landowner in the village of Sieradz.
In the 18th century, a notable Mydlowski was Jakub Mydlowski (1720-1789), a Polish nobleman and military officer who fought in the Bar Confederation against Russian influence in Poland. He was granted lands in the Lublin region for his service.
Moving into the 19th century, Stanislaw Mydlowski (1832-1901) was a prominent Polish painter and professor at the Academy of Fine Arts in Krakow. His works can be found in museums across Poland and Europe.
Another Mydlowski of note was Kazimierz Mydlowski (1870-1935), a Polish engineer and inventor who patented several innovations in the field of soap manufacturing and chemical processing. His family's soap business thrived in the city of Lodz during the industrial revolution.
As the Mydlowski name spread across Poland, it also took on various spelling variations such as Midlowski, Mydlowsky, and Mydlowski. While the name is most common in Poland, it can also be found in other Slavic countries and among Polish diaspora communities around the world.
Demographics
Ancestry and ethnicity for Mydlowski
Among Census respondents with the surname Mydlowski, the largest self-reported group is White at 95.7%. The next largest groups are Two or More Races (3.5%) and Hispanic (0.9%).
The bar chart below shows how Mydlowski 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 Mydlowski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.7% · 110
- Two or more races3.5% · 4
- Hispanic or Latino0.9% · 1
Timeline
Historical Census data for Mydlowski
Mydlowski 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
#145,757
National surname rank
Recorded bearers 115
+6 bearers (+5.5%)
Per 100,000 0.04
Rank movement Up 4,695 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #150,452 | 109 | 0.04 | First available Census row | First available Census row |
| 2020 | #145,757 | 115 | 0.04 | +6 bearers (+5.5%) | Up 4,695 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 Mydlowski 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 | #150,452 | #145,757 | 3.1% |
| Count | 109 | 115 | 5.5% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Mydlowski bearers went from 109 to 115 (+5.5% change). The surname moved up 4,695 positions in the national ranking, going from #150,452 to #145,757.
FAQ
Mydlowski surname: questions and answers
How many people in the U.S. have the surname Mydlowski?
Name Census estimates that about 132 living Americans carry the surname Mydlowski. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Mydlowski?
Mydlowski ranks #145,757 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 115 people with the surname Mydlowski. That is different from the site's living-bearer estimate (132), 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 Mydlowski.
Has Mydlowski become more or less common over time?
Between 2010 and 2020, the surname Mydlowski went from 109 recorded bearers to 115. That is an increase of 6 (+5.5%). In the national ranking it rose from #150,452 to #145,757.
What does the Census say about the background of Mydlowski?
Among Census respondents with the surname Mydlowski, the largest self-reported group is White at 95.7%. The next largest groups are Two or More Races (3.5%) and Hispanic (0.9%). 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 Mydlowski in the 2020 Census, accounting for 95.7% (110 people in the source table).
What is the full ancestry breakdown?
Mydlowski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.7%), Two or More Races (3.5%), Hispanic (0.9%). 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 Mydlowski (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 Mydlowski mean?
A Polish surname derived from the word "mydło" meaning "soap." 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 Mydlowski (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 Mydlowski?
Our sister site HowManyOfMe.org answers how many people have the surname Mydlowski at a glance, with the living-bearer count up front.