2010
#160,975
National surname rank
Recorded bearers 100
First available Census row
Per 100,000 0.03
Very Rare Last name
Cyriacks
A surname derived from the Greek male given name Kyriakos, meaning "of the Lord".
According to the 2020 US Census Bureau surname tables, roughly 128 Americans carry the last name Cyriacks. That puts it at #147,954 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,677,768 residents).
This page is the full Name Census profile for the Cyriacks 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
128
1 in 2,677,768
Census rank
#147,954
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
112
very rare in the US
Popularity narrative
The Census Bureau recorded 112 bearers of the surname Cyriacks in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147954th position in the national surname ranking.
Among Census respondents with the surname Cyriacks, the largest self-reported group is White at 87.5%. The next largest groups are Two or More Races (8.9%) and Hispanic (3.6%).
Origin
Meaning and origin of Cyriacks
The surname Cyriacks originated in Germany, with its earliest known records dating back to the 16th century. It is believed to have derived from the Greek name Kyriakos, meaning "belonging to the Lord." This name was commonly bestowed upon individuals born on a Sunday, as it was considered the Lord's day.
The Cyriacks name can be traced back to various regions within Germany, particularly in areas with a strong Greek or Eastern Orthodox Christian influence. Some of the earliest documented instances of this surname can be found in church records and tax rolls from the 1500s in cities like Nuremberg and Augsburg.
One of the earliest known bearers of the Cyriacks name was Johann Cyriacks, a German theologian and scholar born in 1554. He was a prominent figure in the Reformation movement and authored several works on religious doctrine and philosophy.
In the 17th century, the Cyriacks family gained notable recognition with the birth of Gottfried Cyriacks (1629-1711), a renowned artist and engraver from Augsburg. His intricate copper engravings and etchings were highly sought after by collectors and patrons throughout Europe.
Another notable figure bearing the Cyriacks surname was Johann Michael Cyriacks (1703-1781), a German composer and organist from Nuremberg. His compositions for organ and harpsichord were widely performed and praised during his lifetime.
In the 19th century, the Cyriacks name spread further across Germany and neighboring regions. One prominent individual was Carl Cyriacks (1819-1892), a German-American civil engineer who played a crucial role in the development of railroads and infrastructure in the United States.
Another notable bearer of the Cyriacks name was Wilhelm Cyriacks (1845-1920), a German industrialist and entrepreneur who founded a successful manufacturing company in Düsseldorf, which produced machinery and equipment for the textile industry.
While the Cyriacks surname is not among the most common in Germany, it has left a lasting impact throughout history, with individuals contributing to various fields, including theology, art, music, engineering, and industry.
Demographics
Ancestry and ethnicity for Cyriacks
Among Census respondents with the surname Cyriacks, the largest self-reported group is White at 87.5%. The next largest groups are Two or More Races (8.9%) and Hispanic (3.6%).
The bar chart below shows how Cyriacks 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 Cyriacks surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.5% · 98
- Two or more races8.9% · 10
- Hispanic or Latino3.6% · 4
Timeline
Historical Census data for Cyriacks
Cyriacks 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
#147,954
National surname rank
Recorded bearers 112
+12 bearers (+12.0%)
Per 100,000 0.04
Rank movement Up 13,021 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #160,975 | 100 | 0.03 | First available Census row | First available Census row |
| 2020 | #147,954 | 112 | 0.04 | +12 bearers (+12.0%) | Up 13,021 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 Cyriacks 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 | #160,975 | #147,954 | 8.1% |
| Count | 100 | 112 | 12.0% |
| Per 100K | 0.03 | 0.04 | 24.9% |
Between the 2010 and 2020 Census, the number of Cyriacks bearers went from 100 to 112 (+12.0% change). The surname moved up 13,021 positions in the national ranking, going from #160,975 to #147,954.
FAQ
Cyriacks surname: questions and answers
How many people in the U.S. have the surname Cyriacks?
Name Census estimates that about 128 living Americans carry the surname Cyriacks. Using the current population baseline, that works out to roughly 1 in 2,677,768 residents.
How common is Cyriacks?
Cyriacks ranks #147,954 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 112 people with the surname Cyriacks. That is different from the site's living-bearer estimate (128), 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 Cyriacks.
Has Cyriacks become more or less common over time?
Between 2010 and 2020, the surname Cyriacks went from 100 recorded bearers to 112. That is an increase of 12 (+12.0%). In the national ranking it rose from #160,975 to #147,954.
What does the Census say about the background of Cyriacks?
Among Census respondents with the surname Cyriacks, the largest self-reported group is White at 87.5%. The next largest groups are Two or More Races (8.9%) and Hispanic (3.6%). 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 Cyriacks in the 2020 Census, accounting for 87.5% (98 people in the source table).
What is the full ancestry breakdown?
Cyriacks appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.5%), Two or More Races (8.9%), Hispanic (3.6%). 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 Cyriacks (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 Cyriacks mean?
A surname derived from the Greek male given name Kyriakos, meaning "of the Lord". 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 Cyriacks (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 common is the surname Cyriacks?
If you just want to know how many people are called Cyriacks, HowManyOfMe.org gives you the headline number in one glance.