LAST NAME · 2020 CENSUS
Underdown
Underdown is the 39,424th most common last name in the United States. In the 2020 Census, 602 people carried it — about 0.2 of every 100,000 people. Most people named Underdown are White.
WHO CARRIES THIS NAME · 2020
White85.2%
Black6.5%
Multiracial5.3%
Hispanic2.0%
Asian American0.7%
Native American0.3%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#19,902
0
2000
#34,399
623
2010
#34,916
646
2020
#39,424
602