2010
#146,201
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Tydlacka
A surname of Slavic origin, possibly derived from a nickname or occupation.
According to the 2020 US Census Bureau surname tables, roughly 117 Americans carry the last name Tydlacka. That puts it at #154,755 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,929,524 residents).
This page is the full Name Census profile for the Tydlacka 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
117
1 in 2,929,524
Census rank
#154,755
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
102
very rare in the US
Popularity narrative
The Census Bureau recorded 102 bearers of the surname Tydlacka in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154755th position in the national surname ranking.
Among Census respondents with the surname Tydlacka, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (4.9%) and Two or More Races (3.9%).
Origin
Meaning and origin of Tydlacka
The surname TYDLACKA is believed to have originated in the Czech Republic during the late 15th century. It is thought to be derived from the Czech word "tydlik," which referred to a small container or vessel. The name may have been given to someone who made or sold these containers, or it could have been a descriptive surname referring to a person's physical appearance or occupation.
One of the earliest known references to the TYDLACKA name can be found in a registry of births and deaths from the town of Kutná Hora, located in central Bohemia. The record, dated 1492, mentions a Jan TYDLACKA, who was a blacksmith by trade.
Another early mention of the TYDLACKA name appears in a land deed from the village of Třebíč, dated 1527. The document records the sale of a parcel of land to a farmer named Matěj TYDLACKA.
In the 17th century, the TYDLACKA name seems to have spread to other parts of Europe. A notable figure from this time was Karel TYDLACKA (1623-1689), a Jesuit priest and scholar who taught at the University of Prague.
As the TYDLACKA name grew more widespread, it also underwent some variations in spelling. In German-speaking regions, it was sometimes rendered as "Tiedlacka" or "Tiedlatzka." There are also records of a Polish variant, "Tydlacki," which appeared in the late 18th century.
One of the most notable individuals with the TYDLACKA surname was Václav TYDLACKA (1801-1872), a Czech painter and lithographer who was known for his landscapes and portraits. His works can be found in several museums in the Czech Republic.
Other notable figures include Jan TYDLACKA (1856-1921), a Czech architect who designed several notable buildings in Prague, and Jaroslav TYDLACKA (1887-1961), a Czech writer and journalist who was a leading figure in the Czech literary renaissance of the early 20th century.
In more recent times, the TYDLACKA surname has maintained a presence in the Czech Republic and Slovakia, as well as among Czech diaspora communities in other parts of the world.
Demographics
Ancestry and ethnicity for Tydlacka
Among Census respondents with the surname Tydlacka, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (4.9%) and Two or More Races (3.9%).
The bar chart below shows how Tydlacka 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 Tydlacka surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.2% · 93
- Hispanic or Latino4.9% · 5
- Two or more races3.9% · 4
Timeline
Historical Census data for Tydlacka
Tydlacka 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
#154,755
National surname rank
Recorded bearers 102
-11 bearers (-9.7%)
Per 100,000 0.03
Rank movement Down 8,554 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #146,201 | 113 | 0.04 | First available Census row | First available Census row |
| 2020 | #154,755 | 102 | 0.03 | -11 bearers (-9.7%) | Down 8,554 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 Tydlacka 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 | #146,201 | #154,755 | -5.9% |
| Count | 113 | 102 | -9.7% |
| Per 100K | 0.04 | 0.03 | -14.7% |
Between the 2010 and 2020 Census, the number of Tydlacka bearers went from 113 to 102 (-9.7% change). The surname moved down 8,554 positions in the national ranking, going from #146,201 to #154,755.
FAQ
Tydlacka surname: questions and answers
How many people in the U.S. have the surname Tydlacka?
Name Census estimates that about 117 living Americans carry the surname Tydlacka. Using the current population baseline, that works out to roughly 1 in 2,929,524 residents.
How common is Tydlacka?
Tydlacka ranks #154,755 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 102 people with the surname Tydlacka. That is different from the site's living-bearer estimate (117), 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 Tydlacka.
Has Tydlacka become more or less common over time?
Between 2010 and 2020, the surname Tydlacka went from 113 recorded bearers to 102. That is a decrease of 11 (-9.7%). In the national ranking it fell from #146,201 to #154,755.
What does the Census say about the background of Tydlacka?
Among Census respondents with the surname Tydlacka, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (4.9%) and Two or More Races (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 Tydlacka in the 2020 Census, accounting for 91.2% (93 people in the source table).
What is the full ancestry breakdown?
Tydlacka appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.2%), Hispanic (4.9%), Two or More Races (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 Tydlacka (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 Tydlacka mean?
A surname of Slavic origin, possibly derived from a nickname or occupation. 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 Tydlacka (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 last name Tydlacka?
Our sister site HowManyOfMe.org answers how many people have the last name Tydlacka at a glance, with the living-bearer count up front.