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

O'Hagan, 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 O'Hagan surname is from the 2010 census data.

Popularity of O'Hagan in America

O'Hagan is the 14834th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The O'Hagan surname appeared 1,998 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 people would have the surname O'Hagan.

We can also compare 2010 data for O'Hagan 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 O'Hagan

The surname OHAGAN is of Irish origin, derived from the Gaelic "Ó hAgáin" meaning "descendant of Agán". The name can be traced back to the 10th century in County Tyrone, Northern Ireland.

The OHAGAN surname is believed to have originated in the Ballyclog area of County Tyrone, where the family was part of the Clann Ó hAgáin, a sept or sub-group of the larger Airghialla dynasty. The earliest recorded instance of the name appears in the Annals of Ulster, a chronicle of medieval Irish history, which mentions an "Ó hAgáin" in the year 1022.

In the 12th century, the OHAGAN family was involved in a boundary dispute with the O'Neills, another prominent Irish clan. This conflict is documented in the Book of Fenagh, an ancient Irish manuscript dating back to the 14th century.

One of the earliest known individuals with the surname was Ruaidrí Ó hAgáin, a 13th-century bard and poet who is mentioned in the Annals of the Four Masters, a historical chronicle compiled in the early 17th century.

During the 16th and 17th centuries, the OHAGAN surname was prominent in the Barony of Loughinsholin, County Londonderry. Notable figures from this period include Aodh Ó hAgáin (c. 1550-1635), a Gaelic poet and scholar, and Cormac Ó hAgáin (c. 1590-1670), a military leader who fought in the Irish Confederate Wars.

In the 18th century, the OHAGAN name was found in County Tyrone, particularly in the parishes of Desertoghill and Drumragh. One notable figure from this time was Patrick O'Hagan (1719-1794), a Catholic priest and author who wrote extensively on Irish history and culture.

As the OHAGAN surname spread throughout Ireland, it also made its way to other parts of the world through emigration. One prominent example is John O'Hagan (1822-1890), an Australian politician and judge who served as the Attorney-General of New South Wales and the Vice-President of the Legislative Council.

Race and ethnic origin of people with the last name O'Hagan

We also have some data on the ancestry of people with the surname O'Hagan.

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 O'Hagan 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 O'Hagan 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 O'Hagan was researched and written by our team of onomatology and genealogy experts.

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

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