2010
#156,044
National surname rank
Recorded bearers 104
First available Census row
Per 100,000 0.04
Very Rare Last name
Ciaglo
A habitational name for someone from a place called Ciaglo, of unknown location.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Ciaglo. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Ciaglo 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Ciaglo in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Ciaglo, the largest self-reported group is White at 96.3%. The next largest groups are American Indian/Alaska Native (1.8%) and Asian/Pacific Islander (0.9%).
Origin
Meaning and origin of Ciaglo
The surname CIAGLO is believed to have originated in Poland, possibly in the late 16th or early 17th century. It is thought to be derived from the Polish word "ciaglo," which means "continuous" or "uninterrupted." This suggests that the name may have been given to someone who lived in a place where something occurred continuously or without interruption, such as a watermill or forge.
One of the earliest recorded instances of the name CIAGLO can be found in a Polish parish register from the town of Bochnia, dated 1612. The entry refers to a certain Jan CIAGLO, who was a local miller. This lends credence to the theory that the name was initially associated with a particular occupation or location.
In the 18th century, there are records of a family with the surname CIAGLO residing in the village of Zagórze, near the city of Krakow. These records include birth, marriage, and death entries for several generations of the CIAGLO family, suggesting that they were well-established in the area.
One notable bearer of the CIAGLO surname was Marcin CIAGLO (1760-1842), a Polish landowner and philanthropist from the Lublin region. He is remembered for his significant donations to local churches and schools, as well as his efforts to improve the lives of his tenants and workers.
Another individual of historical significance was Zofia CIAGLO (1825-1902), a Polish writer and activist who advocated for women's rights and education. She was a pioneering figure in the early feminist movement in Poland and published several works on the subject of gender equality.
In the late 19th century, a man named Stanislaw CIAGLO (1872-1948) gained recognition as a skilled artisan and woodcarver. His intricate woodworks can be found in several churches and museums throughout southern Poland, and he is considered a master of the traditional Polish folk art form known as "wycinanka."
As Polish immigrants began to arrive in other parts of the world, such as the United States and Canada, the CIAGLO surname spread to new regions. However, its roots remain firmly planted in Poland, where it has been a part of the cultural and historical landscape for several centuries.
Demographics
Ancestry and ethnicity for Ciaglo
Among Census respondents with the surname Ciaglo, the largest self-reported group is White at 96.3%. The next largest groups are American Indian/Alaska Native (1.8%) and Asian/Pacific Islander (0.9%).
The bar chart below shows how Ciaglo 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 Ciaglo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.3% · 105
- American Indian and Alaska Native1.8% · 2
- Asian and Pacific Islander0.9% · 1
- Two or more races0.9% · 1
Timeline
Historical Census data for Ciaglo
Ciaglo 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
#150,205
National surname rank
Recorded bearers 109
+5 bearers (+4.8%)
Per 100,000 0.04
Rank movement Up 5,839 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #156,044 | 104 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,205 | 109 | 0.04 | +5 bearers (+4.8%) | Up 5,839 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 Ciaglo 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 | #156,044 | #150,205 | 3.7% |
| Count | 104 | 109 | 4.8% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Ciaglo bearers went from 104 to 109 (+4.8% change). The surname moved up 5,839 positions in the national ranking, going from #156,044 to #150,205.
FAQ
Ciaglo surname: questions and answers
How many people in the U.S. have the surname Ciaglo?
Name Census estimates that about 125 living Americans carry the surname Ciaglo. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Ciaglo?
Ciaglo ranks #150,205 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 109 people with the surname Ciaglo. That is different from the site's living-bearer estimate (125), 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 Ciaglo.
Has Ciaglo become more or less common over time?
Between 2010 and 2020, the surname Ciaglo went from 104 recorded bearers to 109. That is an increase of 5 (+4.8%). In the national ranking it rose from #156,044 to #150,205.
What does the Census say about the background of Ciaglo?
Among Census respondents with the surname Ciaglo, the largest self-reported group is White at 96.3%. The next largest groups are American Indian/Alaska Native (1.8%) and Asian/Pacific Islander (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 Ciaglo in the 2020 Census, accounting for 96.3% (105 people in the source table).
What is the full ancestry breakdown?
Ciaglo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.3%), American Indian/Alaska Native (1.8%), Asian/Pacific Islander (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 Ciaglo (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 Ciaglo mean?
A habitational name for someone from a place called Ciaglo, of unknown location. 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 Ciaglo (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 Ciaglo?
For a quick modern take, check how many people have the surname Ciaglo on our sister site HowManyOfMe.org.