LAST NAME · 2020 CENSUS
Siefken
Siefken is the 31,863rd most common last name in the United States. In the 2020 Census, 777 people carried it — about 0.3 of every 100,000 people. Most people named Siefken are White.
WHO CARRIES THIS NAME · 2020
White91.9%
Hispanic4.8%
Multiracial2.1%
Black0.5%
Asian American0.4%
Native American0.4%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#34,708
0
2000
#30,614
719
2010
#31,689
729
2020
#31,863
777