LAST NAME · 2020 CENSUS
Castonguay
Castonguay is the 14,358th most common last name in the United States. In the 2020 Census, 2,004 people carried it — about 0.7 of every 100,000 people. Most people named Castonguay are White.
WHO CARRIES THIS NAME · 2020
White92.3%
Multiracial3.6%
Hispanic2.8%
Asian American0.5%
Native American0.5%
Black0.2%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#14,959
2,487
2000
#13,675
2,034
2010
#14,257
2,102
2020
#14,358
2,004