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    The surname O'Riley

    An Irish surname, carried by 1,050 people in the United States.

    3 syllables Soundex O640

    O'Riley: #24,012 of 162,253 surnames in the 2010 US Census #1Smith#160,975Doriott#10Martinez#100Jimenez#1,000Archer#10,001Dubon O'Riley #24,012, 1,050 people O'Riley: #24,012 of 162,253 surnames in the 2010 US Census #1Smith#100Jimenez O'Riley #24,012, 1,050 people
    Every surname held by 100 or more people in the 2010 US Census, most common on the left (162,253 in all). O'Riley is more common than 85.2% of them.

    Origin

    Irish origin

    From Irish Ó Raghallaigh, commonly anglicized as O'Reilly.

    One of 880 Irish surnames on this site.

    Origin from Wiktionary (CC BY-SA 4.0).

    How common it is

    2010 US Census

    There were 1,050 people named O'Riley in the United States in 2010, about 1 in every 294,043 Americans. That is up 18% since 2000, when the Census counted 889.

    #24,012
    rank among US surnames
    1,050
    people in 2010
    0.4
    per 100,000 Americans
    +18.1%
    change since 2000 (was #25,945)

    Who is named O'Riley

    Race and Hispanic origin as people reported it in the 2010 Census

    86% of people named O'Riley identified as white (not Hispanic), 5.6% as Black (not Hispanic) and 4.1% as Hispanic or Latino (any race).

    • White (not Hispanic) 86%
    • Black (not Hispanic) 5.6%
    • Hispanic or Latino (any race) 4.1%
    • American Indian and Alaska Native 1.7%
    • Two or more races 1.3%
    • Asian and Pacific Islander 1.1%

    Compare: most common surnames among white Americans.

    Spellings and sound-alikes

    Useful when a record has your ancestor under another spelling

    Surnames that sound like O'Riley

    O'Riley has the Soundex code O640, the code US census indexes have used since the 1930s. Every surname with code O640.

    Other Irish surnames

    All 880 Irish surnames

    Questions

    Where does the surname O'Riley come from?
    From Irish Ó Raghallaigh, commonly anglicized as O'Reilly.
    How common is the surname O'Riley?
    1,050 people in the United States had the surname O'Riley in the 2010 Census, about 1 in every 294,043 Americans. It ranked 24,012th of 162,253 surnames.
    What ethnicity is the surname O'Riley?
    In the 2010 Census, 86% of people named O'Riley identified as white (not Hispanic), and 5.6% as Black (not Hispanic).
    Is the surname O'Riley getting more or less common?
    More common. 889 people carried it in the 2000 Census and 1,050 in 2010, up 18%.