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Oneil Family History

Oneil Name Meaning

Irish (Mayo Tipperary): variant of O'Neill .

Source: Dictionary of American Family Names 2nd edition, 2022


Similar surnames: Neil, O'neil, Neal, Neill, Peil, Knell, Keil, Feil, Reil, Orel

Search for a relative to learn more about your family history.

Hint: Try searching for a relative alive in 1940.

Black & white image of a young woman scientist

Where is the Oneil family from?

You can see how Oneil families moved over time by selecting different census years. The Oneil family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Oneil families were found in USA in 1920. In 1840 there were 103 Oneil families living in New York. This was about 46% of all the recorded Oneil's in USA. New York had the highest population of Oneil families in 1840.
Use census records and voter lists to see where families with the Oneil surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.

What did your Oneil ancestors do for a living?

In 1940, Laborer and Teacher were the top reported jobs for men and women in the USA named Oneil. 16% of Oneil men worked as a Laborer and 8% of Oneil women worked as a Teacher. Some less common occupations for Americans named Oneil were Clerk and Maid. .

View Census Data for Oneil | Data not to scale

*We display top occupations by gender to maintain their historical accuracy during times when men and women often performed different jobs.

Top Male Occupations In 1940

  • Laborer
    16%
  • Farmer
    8%
  • Salesman
    6%
  • Clerk
    5%

Top Female Occupations In 1940

  • Teacher
    8%
  • Stenographer
    7%
  • Clerk
    6%
  • Maid
    5%
Black & white image of two construction labourers

What Oneil family records will you find?

Census Records

There are 282,000 census records available for the last name Oneil. Like a window into their day-to-day life, Oneil census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search US census records for Oneil

Passenger Lists

There are 41,000 immigration records available for the last name Oneil. Passenger lists are your ticket to knowing when your ancestors arrived in the USA, and how they made the journey - from the ship name to ports of arrival and departure.

View all Oneil immigration records

Draft Cards

There are 50,000 military records available for the last name Oneil. For the veterans among your Oneil ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all Oneil military records

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What is the average Oneil lifespan?

Between 1943 and 2004, in the United States, Oneil life expectancy was at its lowest point in 1943, and highest in 2004. The average life expectancy for Oneil in 1943 was 22, and 78 in 2004.

View Social Security Death Index (SSDI) for Oneil

Discover the unique achievements of ancestors in the Oneil family tree

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