2000
#8,985
National surname rank
Recorded bearers 3,346
First available Census row
Per 100,000 1.24
Rare Last name
Ronan
A surname of Irish origin, meaning "little seal" or "little dog," derived from the Gaelic word "rón."
According to the 2020 US Census Bureau surname tables, roughly 4,004 Americans carry the last name Ronan. That puts it at #8,990 in the national surname ranking, appearing at a frequency of 1.17 per 100,000 people (about 1 in 85,603 residents).
This page is the full Name Census profile for the Ronan 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.
For British records, Name Census UK has a British surname profile for Ronan with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
4.0K
1 in 85,603
Census rank
#8,990
2020 decennial data
Per 100,000
1.2
Frequency rate
Recorded bearers
3.5K
rare in the US
Popularity narrative
The Census Bureau recorded 3,492 bearers of the surname Ronan in its 2020 decennial surname file. At a rate of 1.17 per 100,000 residents, it holds the 8990th position in the national surname ranking.
Among Census respondents with the surname Ronan, the largest self-reported group is White at 89.5%. The next largest groups are Hispanic (5.7%) and Two or More Races (2.3%).
Origin
Meaning and origin of Ronan
The surname RONAN is of Irish origin, derived from the Gaelic personal name Ronán, which means "little seal." This name was particularly prevalent in the southwestern counties of Ireland, such as Kerry and Cork, during the Middle Ages.
The earliest recorded instances of the surname RONAN can be found in the Annals of the Four Masters, a chronicle of medieval Irish history compiled in the 17th century. One notable entry mentions a Muiris O'Ronain (Maurice O'Ronan) who served as the Bishop of Killaloe from 1207 to 1224.
In the 14th century, the RONAN surname was associated with the Barony of Iveragh in County Kerry, where it was spelled as "O'Ronain." This spelling variation suggests a connection to the Irish patronymic naming system, indicating that the name originally referred to descendants of a man named Ronán.
Throughout the centuries, several individuals with the surname RONAN have made significant contributions in various fields. One notable figure was Sir John Ronan (1800-1884), an Irish-born Australian politician and businessman who served as the Mayor of Melbourne from 1856 to 1857.
Another prominent individual was Joseph Ronan (1913-1979), an American actor and singer who appeared in numerous films and television shows throughout the 20th century. He was best known for his role in the 1951 musical film "An American in Paris."
In the literary world, Patricia Ronan (1942-2008) was an acclaimed Irish writer and poet. Her works explored themes of identity, family, and the Irish diaspora experience. She was a recipient of the prestigious Hennessy Literary Award in 1983.
The RONAN surname has also been associated with various place names in Ireland, such as Ronanstown, a suburb of Dublin, and Ronayne's Island, located in County Cork. These place names further emphasize the historical roots of the surname in the Irish landscape.
While the name RONAN has maintained a presence in Ireland and other parts of the world, it has also been subject to variations in spelling and pronunciation over time, reflecting the linguistic and cultural diversity of the regions where it has been adopted.
Demographics
Ancestry and ethnicity for Ronan
Among Census respondents with the surname Ronan, the largest self-reported group is White at 89.5%. The next largest groups are Hispanic (5.7%) and Two or More Races (2.3%).
The bar chart below shows how Ronan 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 Ronan surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.5% · 3,125
- Hispanic or Latino5.7% · 198
- Two or more races2.3% · 82
- Asian and Pacific Islander1.4% · 48
- Black or African American1.0% · 35
- American Indian and Alaska Native0.1% · 4
Timeline
Historical Census data for Ronan
Ronan appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#8,036
National surname rank
Recorded bearers 4,117
+771 bearers (+23.0%)
Per 100,000 1.40
Rank movement Up 949 places
2020
#8,990
National surname rank
Recorded bearers 3,492
-625 bearers (-15.2%)
Per 100,000 1.17
Rank movement Down 954 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #8,985 | 3,346 | 1.24 | First available Census row | First available Census row |
| 2010 | #8,036 | 4,117 | 1.40 | +771 bearers (+23.0%) | Up 949 places |
| 2020 | #8,990 | 3,492 | 1.17 | -625 bearers (-15.2%) | Down 954 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 Ronan 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 | #8,036 | #8,990 | -11.9% |
| Count | 4,117 | 3,492 | -15.2% |
| Per 100K | 1.40 | 1.17 | -16.6% |
Between the 2010 and 2020 Census, the number of Ronan bearers went from 4,117 to 3,492 (-15.2% change). The surname moved down 954 positions in the national ranking, going from #8,036 to #8,990.
FAQ
Ronan surname: questions and answers
How many people in the U.S. have the surname Ronan?
Name Census estimates that about 4,004 living Americans carry the surname Ronan. Using the current population baseline, that works out to roughly 1 in 85,603 residents.
How common is Ronan?
Ronan ranks #8,990 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.17 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 3,492 people with the surname Ronan. That is different from the site's living-bearer estimate (4,004), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.17 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.17 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Ronan.
Has Ronan become more or less common over time?
Between 2010 and 2020, the surname Ronan went from 4,117 recorded bearers to 3,492. That is a decrease of 625 (-15.2%). In the national ranking it fell from #8,036 to #8,990.
What does the Census say about the background of Ronan?
Among Census respondents with the surname Ronan, the largest self-reported group is White at 89.5%. The next largest groups are Hispanic (5.7%) and Two or More Races (2.3%). 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 Ronan in the 2020 Census, accounting for 89.5% (3,125 people in the source table).
What is the full ancestry breakdown?
Ronan appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.5%), Hispanic (5.7%), Two or More Races (2.3%). 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 Ronan (2000, 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 Ronan mean?
A surname of Irish origin, meaning "little seal" or "little dog," derived from the Gaelic word "rón." 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 Ronan (1.17 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 surname Ronan?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.