2010
#152,628
National surname rank
Recorded bearers 107
First available Census row
Per 100,000 0.04
Very Rare Last name
Cronnon
An Irish surname transferred from a place name meaning "small hills or little rounds".
According to the 2020 US Census Bureau surname tables, roughly 116 Americans carry the last name Cronnon. That puts it at #155,270 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,954,779 residents).
This page is the full Name Census profile for the Cronnon 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
116
1 in 2,954,779
Census rank
#155,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
101
very rare in the US
Popularity narrative
The Census Bureau recorded 101 bearers of the surname Cronnon in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155270th position in the national surname ranking.
Among Census respondents with the surname Cronnon, the largest self-reported group is White at 84.2%. The next largest groups are Two or More Races (6.9%) and Black (5.0%).
Origin
Meaning and origin of Cronnon
The surname Cronnon is of Irish origin, tracing its roots back to the 16th century in County Leitrim, Ireland. The name is derived from the Gaelic word "cronnán," meaning "a low murmuring sound" or "a hum," potentially referring to a person's soft-spoken nature or a geographical feature resembling a gentle hum.
One of the earliest recorded mentions of the Cronnon name can be found in the Fiants of the Reign of Queen Elizabeth I, a collection of official documents from the 16th century. In these records, a John Cronnon is listed as a landowner in County Leitrim, dating back to approximately 1580.
Throughout the 17th and 18th centuries, the Cronnon family maintained a presence in County Leitrim, with some members migrating to neighboring counties such as Donegal and Sligo. Notable individuals bearing this surname during this period include Patrick Cronnon, a respected farmer and landowner in Drumkeeran, County Leitrim, born in 1675.
By the 19th century, the Cronnon name had spread beyond Ireland, with some members of the family emigrating to other parts of the British Isles and North America. One such individual was Michael Cronnon, a merchant born in 1812 in County Leitrim, who later settled in Liverpool, England, and established a successful trading business.
Another notable figure was Bridget Cronnon, born in 1845 in County Leitrim, who emigrated to the United States in the late 1860s and became a prominent figure in the Irish-American community in Boston, Massachusetts, advocating for the rights of immigrant workers.
In the 20th century, the Cronnon name continued to be represented across various fields. John Cronnon, born in 1921 in Donegal, was a respected educator and author, publishing several books on Irish folklore and culture. Additionally, Mary Cronnon, born in 1935 in County Leitrim, gained recognition as a talented sculptor, her works being exhibited in galleries throughout Ireland and the United Kingdom.
While the Cronnon surname may not be as widespread as some other Irish names, it has a rich history deeply rooted in the cultural and linguistic traditions of Ireland, with its bearers making significant contributions across various domains over the centuries.
Demographics
Ancestry and ethnicity for Cronnon
Among Census respondents with the surname Cronnon, the largest self-reported group is White at 84.2%. The next largest groups are Two or More Races (6.9%) and Black (5.0%).
The bar chart below shows how Cronnon 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 Cronnon surname at the time of the 2020 Census, not any inherent property of the name itself.
- White84.2% · 85
- Two or more races6.9% · 7
- Black or African American5.0% · 5
- Hispanic or Latino3.0% · 3
- American Indian and Alaska Native1.0% · 1
Timeline
Historical Census data for Cronnon
Cronnon 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
#155,270
National surname rank
Recorded bearers 101
-6 bearers (-5.6%)
Per 100,000 0.03
Rank movement Down 2,642 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #152,628 | 107 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,270 | 101 | 0.03 | -6 bearers (-5.6%) | Down 2,642 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 Cronnon 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 | #152,628 | #155,270 | -1.7% |
| Count | 107 | 101 | -5.6% |
| Per 100K | 0.04 | 0.03 | -15.5% |
Between the 2010 and 2020 Census, the number of Cronnon bearers went from 107 to 101 (-5.6% change). The surname moved down 2,642 positions in the national ranking, going from #152,628 to #155,270.
FAQ
Cronnon surname: questions and answers
How many people in the U.S. have the surname Cronnon?
Name Census estimates that about 116 living Americans carry the surname Cronnon. Using the current population baseline, that works out to roughly 1 in 2,954,779 residents.
How common is Cronnon?
Cronnon ranks #155,270 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 101 people with the surname Cronnon. That is different from the site's living-bearer estimate (116), 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 Cronnon.
Has Cronnon become more or less common over time?
Between 2010 and 2020, the surname Cronnon went from 107 recorded bearers to 101. That is a decrease of 6 (-5.6%). In the national ranking it fell from #152,628 to #155,270.
What does the Census say about the background of Cronnon?
Among Census respondents with the surname Cronnon, the largest self-reported group is White at 84.2%. The next largest groups are Two or More Races (6.9%) and Black (5.0%). 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 Cronnon in the 2020 Census, accounting for 84.2% (85 people in the source table).
What is the full ancestry breakdown?
Cronnon appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (84.2%), Two or More Races (6.9%), Black (5.0%). 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 Cronnon (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 Cronnon mean?
An Irish surname transferred from a place name meaning "small hills or little rounds". 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 Cronnon (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 Cronnon?
If you just want to know how many Americans have the surname Cronnon, HowManyOfMe.org gives you the headline number in one glance.