Find out how popular the last name O'Fallon 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'Fallon.

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

Popularity of O'Fallon in America

O'Fallon is the 39164th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The O'Fallon surname appeared 562 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 O'Fallon.

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

The surname OFALLON has its origins in Ireland, dating back to the 16th century. It is believed to be derived from the Gaelic word "O'Fallúnta," which translates to "descendent of the plunderer" or "one who is destructive." The name was initially concentrated in the counties of Cork and Kerry, where the first recorded instances of the surname can be found.

During the 17th century, the OFALLON name appeared in various historical records, including the Fiants of the Reign of Elizabeth I and the Chancery Rolls of the 16th and 17th centuries. These documents provide valuable insights into the lives and activities of individuals bearing this surname during that era.

The earliest known person with the surname OFALLON was Donough O'Fallon, who lived in County Cork in the late 16th century. He was a prominent figure in the local community and was recognized for his involvement in various political and social affairs.

Another notable individual was Dermot O'Fallon, born in 1612 in County Kerry. He served as a captain in the Irish Confederate Wars and played a significant role in the conflicts of the time.

In the 18th century, the OFALLON name gained recognition with the birth of Patrick O'Fallon (1734-1812), a renowned Irish politician and landowner. He was actively involved in the Irish Parliament and was widely respected for his contributions to local governance.

The name also has connections to the United States, where many Irish immigrants settled in the 19th century. One of the most famous OFALLONS was John OFALLON (1791-1865), a successful businessman and philanthropist who founded the city of O'Fallon, Missouri, which bears his name.

Another notable figure was Bishop John OFALLON (1820-1892), a prominent Roman Catholic clergyman who served as the Bishop of London, Ontario, Canada. He was known for his leadership and dedication to the Church and played a crucial role in the development of Catholic education in the region.

As the name spread across the globe, it underwent various spellings and variations, such as O'Fallon, O'Ffallon, and Ofallon, reflecting the influence of different languages and regional dialects.

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

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

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'Fallon 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'Fallon 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'Fallon 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'Fallon, please contact us.

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