How common is the surname McIlwain?

3,002 people in the United States had the surname McIlwain in the 2010 Census, about 1 in every 102,847 Americans. It ranked 10,657th of 162,253 surnames.

Who is the most famous person named McIlwain?

Charles Howard McIlwain, American constitutional historian (1871–1968).

Where is the surname McIlwain most common?

Wikidata records people named McIlwain in the United States.

Is the surname McIlwain getting more or less common?

More common. 2,859 people carried it in the 2000 Census and 3,002 in 2010, up 5.0%.

The surname McIlwain

A surname, carried by 3,002 people in the United States.

3 syllables Soundex M245

Every surname held by 100 or more people in the 2010 US Census, most common on the left (162,253 in all). McIlwain is more common than 93.4% of them.

Origin

Variant of McElwain.

Origin from Wiktionary (CC BY-SA 4.0).

How common it is

2010 US Census

There were 3,002 people named McIlwain in the United States in 2010, about 1 in every 102,847 Americans. That is up 5.0% since 2000, when the Census counted 2,859.

#10,657

rank among US surnames

3,002

people in 2010

1.0

per 100,000 Americans

+5%

change since 2000 (was #10,327)

Rank	Surname	People	1 in
#10,649	Weyer	3,004	102,778
#10,653	Anchondo	3,003	102,812
#10,657	Holz	3,002	102,847
#10,662	Bogdan	3,001	102,881
#10,663	Nee	3,000	102,915

Who is named McIlwain

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

64% of people named McIlwain identified as white (not Hispanic), 33% as Black (not Hispanic) and 1.4% as Hispanic or Latino (any race).

White (not Hispanic) 64%
Black (not Hispanic) 33%
Hispanic or Latino (any race) 1.4%
Two or more races 1.4%
American Indian and Alaska Native 0.4%
Asian and Pacific Islander 0.3%

Compare: most common surnames among white Americans.

Famous McIlwains

1 notable person on Wikidata, most written-about first

Charles Howard McIlwain
American constitutional historian (1871–1968)

Spellings and sound-alikes

Useful when a record has your ancestor under another spelling

Surnames that sound like McIlwain

McIlwain has the Soundex code M245, the code US census indexes have used since the 1930s. Every surname with code M245.

Questions

Where does the surname McIlwain come from?: Variant of McElwain.
How common is the surname McIlwain?: 3,002 people in the United States had the surname McIlwain in the 2010 Census, about 1 in every 102,847 Americans. It ranked 10,657th of 162,253 surnames.
What ethnicity is the surname McIlwain?: In the 2010 Census, 64% of people named McIlwain identified as white (not Hispanic), and 33% as Black (not Hispanic).
Who is the most famous person named McIlwain?: Charles Howard McIlwain, American constitutional historian (1871–1968).
Where is the surname McIlwain most common?: Wikidata records people named McIlwain in the United States.
Is the surname McIlwain getting more or less common?: More common. 2,859 people carried it in the 2000 Census and 3,002 in 2010, up 5.0%.