2000
#7,386
National surname rank
Recorded bearers 4,162
First available Census row
Per 100,000 1.54
Rare Last name
Shanley
An Irish surname derived from the Gaelic "Ó Seanlaoich," meaning "descendant of the old hero."
According to the 2020 US Census Bureau surname tables, roughly 4,618 Americans carry the last name Shanley. That puts it at #7,908 in the national surname ranking, appearing at a frequency of 1.35 per 100,000 people (about 1 in 74,221 residents).
This page is the full Name Census profile for the Shanley 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 Shanley with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
4.6K
1 in 74,221
Census rank
#7,908
2020 decennial data
Per 100,000
1.3
Frequency rate
Recorded bearers
4.0K
rare in the US
Popularity narrative
The Census Bureau recorded 4,027 bearers of the surname Shanley in its 2020 decennial surname file. At a rate of 1.35 per 100,000 residents, it holds the 7908th position in the national surname ranking.
Among Census respondents with the surname Shanley, the largest self-reported group is White at 92.8%. The next largest groups are Hispanic (3.2%) and Two or More Races (2.7%).
Origin
Meaning and origin of Shanley
The surname Shanley originated in Ireland, specifically in the counties of Louth and Armagh, during the late medieval period. It is derived from the Gaelic words "sean" meaning "old" and "leath" meaning "portion" or "territory." The name likely referred to an individual who lived in an old or established part of a particular area.
Variations of the spelling include Shanly, Shanlee, and Shanlye. The earliest recorded instances of the name date back to the 16th century, with references found in the Fiants of the Tudor Sovereigns during the reign of Queen Elizabeth I in the late 1500s.
In the 17th century, the Shanley name appeared in the 1659 Census of Ireland, which was a survey conducted by Sir William Petty after the Cromwellian conquest of Ireland. This suggests that the Shanley family had established roots in Ireland by that time.
One notable figure in history was Sir John Shanley, an Irish soldier and landowner who lived in the late 16th and early 17th centuries. He served as a captain in the Irish rebel forces during the Nine Years' War (1594-1603) against English rule.
Another prominent Shanley was Walter Shanley (1783-1847), an Irish Catholic priest who was active in the early 19th century. He served as the Bishop of Kilmore and played a role in the establishment of the Catholic Seminary of Cavan.
In the United States, one of the earliest recorded individuals with the Shanley surname was Patrick Shanley, who was born in Ireland around 1790 and immigrated to New York in the early 19th century.
John Wilbur Shanley (1901-1979) was an American writer and screenwriter who gained fame in the mid-20th century. He wrote the screenplay for the classic film "The Luck of the Irish" in 1948.
James Shanley (1932-2009) was an American playwright and screenwriter, best known for his play "Doubt: A Parable," which won the Pulitzer Prize for Drama in 2005.
The Shanley surname has deep roots in Ireland, dating back to the medieval period, and has since spread to other parts of the world through immigration. While originally rooted in specific regions of Ireland, the name has been carried by notable individuals across various fields throughout history.
Demographics
Ancestry and ethnicity for Shanley
Among Census respondents with the surname Shanley, the largest self-reported group is White at 92.8%. The next largest groups are Hispanic (3.2%) and Two or More Races (2.7%).
The bar chart below shows how Shanley 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 Shanley surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.8% · 3,738
- Hispanic or Latino3.2% · 127
- Two or more races2.7% · 107
- Asian and Pacific Islander0.7% · 28
- Black or African American0.4% · 15
- American Indian and Alaska Native0.3% · 12
Timeline
Historical Census data for Shanley
Shanley 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
#7,384
National surname rank
Recorded bearers 4,511
+349 bearers (+8.4%)
Per 100,000 1.53
Rank movement Up 2 places
2020
#7,908
National surname rank
Recorded bearers 4,027
-484 bearers (-10.7%)
Per 100,000 1.35
Rank movement Down 524 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #7,386 | 4,162 | 1.54 | First available Census row | First available Census row |
| 2010 | #7,384 | 4,511 | 1.53 | +349 bearers (+8.4%) | Up 2 places |
| 2020 | #7,908 | 4,027 | 1.35 | -484 bearers (-10.7%) | Down 524 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 Shanley 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 | #7,384 | #7,908 | -7.1% |
| Count | 4,511 | 4,027 | -10.7% |
| Per 100K | 1.53 | 1.35 | -11.9% |
Between the 2010 and 2020 Census, the number of Shanley bearers went from 4,511 to 4,027 (-10.7% change). The surname moved down 524 positions in the national ranking, going from #7,384 to #7,908.
FAQ
Shanley surname: questions and answers
How many people in the U.S. have the surname Shanley?
Name Census estimates that about 4,618 living Americans carry the surname Shanley. Using the current population baseline, that works out to roughly 1 in 74,221 residents.
How common is Shanley?
Shanley ranks #7,908 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.35 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 4,027 people with the surname Shanley. That is different from the site's living-bearer estimate (4,618), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.35 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.35 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 Shanley.
Has Shanley become more or less common over time?
Between 2010 and 2020, the surname Shanley went from 4,511 recorded bearers to 4,027. That is a decrease of 484 (-10.7%). In the national ranking it fell from #7,384 to #7,908.
What does the Census say about the background of Shanley?
Among Census respondents with the surname Shanley, the largest self-reported group is White at 92.8%. The next largest groups are Hispanic (3.2%) and Two or More Races (2.7%). 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 Shanley in the 2020 Census, accounting for 92.8% (3,738 people in the source table).
What is the full ancestry breakdown?
Shanley appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.8%), Hispanic (3.2%), Two or More Races (2.7%). 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 Shanley (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 Shanley mean?
An Irish surname derived from the Gaelic "Ó Seanlaoich," meaning "descendant of the old hero." 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 Shanley (1.35 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 Americans have the surname Shanley?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.