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Name Lineage

    The surname Diffley

    An Irish patronymic surname, carried by 554 people in the United States.

    2 syllables Soundex D140

    Diffley: #39,659 of 162,253 surnames in the 2010 US Census #1Smith#160,975Doriott#10Martinez#100Jimenez#1,000Archer#10,001Dubon Diffley #39,659, 554 people Diffley: #39,659 of 162,253 surnames in the 2010 US Census #1Smith#100Jimenez Diffley #39,659, 554 people
    Every surname held by 100 or more people in the 2010 US Census, most common on the left (162,253 in all). Diffley is more common than 75.6% of them.

    Origin

    Irish origin

    Reduced Anglicized form of Irish Ó Duibhghiolla (“descendant of Duibhgiolla”), a personal name composed of the elements dubh (“black”) and giolla (“lad”).

    Diffley is a patronymic surname: formed from a father’s (or ancestor’s) given name.

    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 554 people named Diffley in the United States in 2010, about 1 in every 557,302 Americans. That is up 9.5% since 2000, when the Census counted 506.

    #39,659
    rank among US surnames
    554
    people in 2010
    0.2
    per 100,000 Americans
    +9.5%
    change since 2000 (was #40,690)

    Who is named Diffley

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

    97% of people named Diffley identified as white (not Hispanic), 1.8% as Hispanic or Latino (any race).

    • White (not Hispanic) 97%
    • Hispanic or Latino (any race) 1.8%
    The Census suppresses very small shares to protect privacy; Asian & Pacific Islander, Multiracial are not shown.

    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 Diffley

    Diffley has the Soundex code D140, the code US census indexes have used since the 1930s. Every surname with code D140.

    Other Irish surnames

    All 880 Irish surnames

    Questions

    Where does the surname Diffley come from?
    Reduced Anglicized form of Irish Ó Duibhghiolla (“descendant of Duibhgiolla”), a personal name composed of the elements dubh (“black”) and giolla (“lad”).
    How common is the surname Diffley?
    554 people in the United States had the surname Diffley in the 2010 Census, about 1 in every 557,302 Americans. It ranked 39,659th of 162,253 surnames.
    What ethnicity is the surname Diffley?
    In the 2010 Census, 97% of people named Diffley identified as white (not Hispanic), and 1.8% as Hispanic or Latino (any race).
    What type of surname is Diffley?
    Diffley is a patronymic surname, formed from a father’s (or ancestor’s) given name.
    Is the surname Diffley getting more or less common?
    More common. 506 people carried it in the 2000 Census and 554 in 2010, up 9.5%.