Explore the Family Name Mochizuki

The meaning of Mochizuki

Japanese: written 望月 ‘full moon’. It is a habitational name from a village in Shinano (now Nagano prefecture) and is found mostly in central Japan. Some characteristic forenames: Japanese Masao, Ayako, Ichiro, Itaru, Kaoru, Keiko, Kiyo, Makoto, Megumi, Minoru, Shinobu, Shintaro.

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

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

Based on data from the Decennial U.S. Census, the popularity of the surname 'Mochizuki' has slightly decreased in the US between 2000 and 2010. The ranking fell from 39,111 to 45,253, signifying a 15.7% decrease. Similarly, there was a reduction in the number of people with this surname by 10.75%, dropping from 530 in 2000 to 473 in 2010. Consequently, the proportion per 100k of the population also fell by 20%, from 0.2 in 2000 to 0.16 in 2010.

	2000	2010	Change
Rank	#39,111	#45,253	-15.7%
Count	530	473	-10.75%
Proportion per 100k	0.2	0.16	-20%

Race and Ethnicity of people with the last name Mochizuki

Regarding ethnic identity, the Decennial U.S. Census data shows that the majority of individuals bearing the Mochizuki surname identify as Asian/Pacific Islander. However, this percentage saw a slight decrease from 86.98% in 2000 to 81.18% in 2010. Interestingly, all other reported ethnic identities experienced increases during this period. Those identifying as two or more races rose by 28.87%, from 7.55% to 9.73%. The percentage of those identifying as White increased by 57.83%, from 4.15% to 6.55%, and those identifying as Hispanic increased from 1.32% to 2.11%, a rise of 59.85%. There were no individuals who identified as Black or American Indian and Alaskan Native in either year.

	2000	2010	Change
Asian/Pacific Islander	86.98%	81.18%	-6.67%
Two or More Races	7.55%	9.73%	28.87%
White	4.15%	6.55%	57.83%
Hispanic	1.32%	2.11%	59.85%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%