Find out how popular the last name Kilduff is in the United States and learn more about the meaning, history, and race and ethnic origin of people in America who are named Kilduff.

Kilduff, like all of the last names we have data for, is identified by the U.S. Census Bureau as a surname which has more than 100 occurrences in the United States in the Decennial Census survey. The most recent statistics we have for the Kilduff surname is from the 2010 census data.

Popularity of Kilduff in America

Kilduff is the 20029th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Kilduff surname appeared 1,336 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 people would have the surname Kilduff.

We can also compare 2010 data for Kilduff to data from the previous census in 2000. The table below contains all of the statistics for both years in a side-by-side comparison.

The history of the last name Kilduff

The surname Kilduff is of Irish origin, with its roots traced back to the 11th century. It is derived from the Irish Gaelic phrase "Cill Dhuibh," which translates to "Black Church" or "Church of the Black Person." This name is believed to have originated in County Mayo, Ireland, where a church of this description once stood.

In ancient Irish records, the name appears in various spellings, such as Kilduffe, Kilduf, and Kildoffe, reflecting the variations in pronunciation and spelling over time. One of the earliest known references to the name can be found in the Annals of the Four Masters, a chronicle of medieval Irish history compiled in the 17th century.

The Kilduff surname is closely associated with several prominent figures throughout Irish history. One notable bearer was Seán Kilduff (1623-1683), an Irish Catholic priest and scholar who played a significant role in preserving Irish language and literature during the Cromwellian era. Another was Dáibhí Ó Cillduibh (1590-1660), a renowned Irish-language poet and scribe from County Sligo.

In the 18th century, the Kilduff family had strong ties to the townland of Carna, County Galway, where they were landowners and influential members of the community. One notable figure from this era was Patrick Kilduff (1737-1819), a wealthy merchant and landowner who was involved in local politics and community affairs.

Moving into the 19th century, James Kilduff (1804-1879) was a prominent Irish-American businessman and philanthropist who emigrated to the United States and became one of the wealthiest men in New York City. He made significant contributions to various charitable organizations and educational institutions.

Another notable bearer of the Kilduff name was John Kilduff (1884-1956), an Irish-American labor leader and politician who served as the president of the International Longshoremen's Association and was elected to the New York State Assembly.

While the Kilduff surname is predominantly found in Ireland and among the Irish diaspora, it has also spread to other parts of the world through migration and intermarriage. However, the name remains closely tied to its Irish roots and the rich heritage associated with its origins.

Race and ethnic origin of people with the last name Kilduff

We also have some data on the ancestry of people with the surname Kilduff.

The below race categories are the modified race categories used in the Census Bureau's population estimates program. All people were categorized into six mutually exclusive racial and Hispanic origin groups:

1. White only
2. Black only
3. American Indian and Alaskan Native only
4. Asian and Pacific Islander only
5. Hispanic
6. Two or More Races

For the most recent 2010 census data, the race/ethnic origin breakdown for Kilduff was:

Note: Any fields showing (S) means the data was suppressed for privacy so that the data does not in any way identify any specific individuals.

Since we have data from the previous census in 2000, we can also compare the values to see how the popularity of Kilduff has changed in the 10 years between the two census surveys.

Data source

The last name data and ethnic breakdown of last names is sourced directly from the Decennial Census survey, conducted every 10 years by the United States Census Bureau.

The history and meaning of the name Kilduff was researched and written by our team of onomatology and genealogy experts.

If you have a correction or suggestion to improve the history of Kilduff, please contact us.

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