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Name Lineage

    The surname Grennan

    An Irish surname, carried by 854 people in the United States.

    2 syllables Soundex G655

    Grennan: #28,049 of 162,253 surnames in the 2010 US Census #1Smith#160,975Doriott#10Martinez#100Jimenez#1,000Archer#10,001Dubon Grennan #28,049, 854 people Grennan: #28,049 of 162,253 surnames in the 2010 US Census #1Smith#100Jimenez Grennan #28,049, 854 people
    Every surname held by 100 or more people in the 2010 US Census, most common on the left (162,253 in all). Grennan is more common than 82.7% of them.

    Origin

    Irish origin

    * As an English surname of Norman origin, from Old French grenon (“mustache”), from Vulgar Latin *granonem (“facial hair, mustache”), from Frankish *granu, from Proto-Germanic *granō (“awn, beard-hair, hair-tips, mustache”). * As an Irish surname, variant of Greenan.

    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 854 people named Grennan in the United States in 2010, about 1 in every 361,529 Americans. That is down 4.6% since 2000, when the Census counted 895.

    #28,049
    rank among US surnames
    854
    people in 2010
    0.3
    per 100,000 Americans
    -4.6%
    change since 2000 (was #25,825)

    Who is named Grennan

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

    96% of people named Grennan identified as white (not Hispanic), 1.5% as two or more races and 1.2% as Asian and Pacific Islander.

    • White (not Hispanic) 96%
    • Two or more races 1.5%
    • Asian and Pacific Islander 1.2%
    • Black (not Hispanic) 0.9%
    The Census suppresses very small shares to protect privacy; Hispanic, Native American 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 Grennan

    Grennan has the Soundex code G655, the code US census indexes have used since the 1930s. Every surname with code G655.

    Other Irish surnames

    All 880 Irish surnames

    Questions

    Where does the surname Grennan come from?
    * As an English surname of Norman origin, from Old French grenon (“mustache”), from Vulgar Latin *granonem (“facial hair, mustache”), from Frankish *granu, from Proto-Germanic *granō (“awn, beard-hair, hair-tips, mustache”). * As an Irish surname, variant of Greenan.
    How common is the surname Grennan?
    854 people in the United States had the surname Grennan in the 2010 Census, about 1 in every 361,529 Americans. It ranked 28,049th of 162,253 surnames.
    What ethnicity is the surname Grennan?
    In the 2010 Census, 96% of people named Grennan identified as white (not Hispanic), and 1.5% as two or more races.
    Is the surname Grennan getting more or less common?
    Less common. 895 people carried it in the 2000 Census and 854 in 2010, down 4.6%.