Explore the Family Name Mcniff

The meaning of Mcniff

Irish: Anglicized form of Gaelic Mac Conduibh, a patronymic from the personal name Cú Dhubh, composed of the elements cú ‘hound’ (genitive con) + dubh ‘black’. It is also Anglicized as Cunniff and McAdoo. Some characteristic forenames: Irish Brigid, Donovan.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Mcniff in the United States?

Based on the Decennial U.S. Census data, the popularity of the surname Mcniff has slightly decreased over a decade. In 2000, Mcniff was ranked 18,340 in popularity with a count of 1,394 individuals carrying this surname. A decade later, the name slipped to rank 19,027 despite a slight increase to 1,431 in the number of people bearing the surname. The proportion of the Mcniff surname per 100,000 people also dropped by 5.77% during this period.

20002010Change
Rank#18,340#19,027-3.75%
Count1,3941,4312.65%
Proportion per 100k0.520.49-5.77%

Race and Ethnicity of people with the last name Mcniff

Regarding ethnic identity, the Decennial U.S. Census data provides a detailed breakdown. Majority of those with the Mcniff surname identified as White, though that percentage fell slightly from 96.13% in 2000 to 94.62% in 2010. The percentage of Mcniffs identifying as Asian/Pacific Islander and Hispanic saw increases of 54.00% and 59.56%, respectively. However, there were no recorded changes in the percentages of Mcniffs identifying as Black or American Indian and Alaskan Native. Also, the portion identifying with two or more races declined by 11.39% over the same period.

20002010Change
White96.13%94.62%-1.57%
Hispanic1.36%2.17%59.56%
Two or More Races1.58%1.4%-11.39%
Asian/Pacific Islander0.5%0.77%54%
Black0%0%0%
American Indian and Alaskan Native0%0%0%