Explore the Family Name Ionescu

The meaning of Ionescu

Romanian: patronymic, with the suffix -escu, from the personal name Ion. Some characteristic forenames: Romanian Nicolae, Alexandru, Dumitru, Florin, Mircea, Mihai, Constantin, Corneliu, Liviu, Mihaela, Costel, Eugeniu.

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

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

Based on the Decennial U.S. Census data, the surname Ionescu has risen in popularity over a decade. In 2000, it was ranked as the 34,210th most common surname, but by 2010 it had moved up to the 28,065th spot, experiencing an increase of almost 18%. The number of individuals carrying the Ionescu surname also rose from 627 in 2000 to 853 in 2010, seeing a substantial growth of around 36%. The proportion of the name per 100,000 people also saw a rise from 0.23 to 0.29 within that ten-year span.

	2000	2010	Change
Rank	#34,210	#28,065	17.96%
Count	627	853	36.04%
Proportion per 100k	0.23	0.29	26.09%

Race and Ethnicity of people with the last name Ionescu

As for ethnic identity, the majority of individuals with the Ionescu surname identified as White according to the Decennial U.S. Census data. In both 2000 and 2010, over 95% of Ionescus were White, with a slight increase from 95.69% to 96.37% over the decade. There was a small representation of Hispanic identity among Ionescus, which grew from 1.91% in 2000 to 2.46% in 2010. Interestingly, the data showed an appearance of Asian or Pacific Islander identity in 2010 (1.06%), whereas there was none in 2000. On the other hand, those identifying as two or more races decreased to zero in 2010, down from 2.07% in 2000. There were no Black or American Indian and Alaskan Native identities reported under this surname in either year.

	2000	2010	Change
White	95.69%	96.37%	0.71%
Hispanic	1.91%	2.46%	28.8%
Asian/Pacific Islander	0%	1.06%	0%
Two or More Races	2.07%	0%	0%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%