Seidy: Name Popularity, History & Rankings (1880

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade	Girls	Per year	Change	Best rank
1880s	–	–	–	–
1890s	–	–	–	–
1900s	–	–	–	–
1910s	–	–	–	–
1920s	–	–	–	–
1930s	–	–	–	–
1940s	–	–	–	–
1950s	–	–	–	–
1960s	–	–	–	–
1970s	–	–	–	–
1980s	–	–	–	–
1990s	70	7	–	#7,390
2000s	132	13	+89%	#7,517
2010s	92	9	-30%	#6,684
2020s (to 2025)	50	8	-9%	#8,421

Decade

Girls

Per year

Change

Best rank

1880s

–

1890s

–

1900s

–

1910s

–

1920s

–

1930s

–

1940s

–

1950s

–

1960s

–

1970s

–

1980s

–

1990s

–

#7,390

2000s

132

+89%

#7,517

2010s

-30%

#6,684

2020s (to 2025)

-9%

#8,421

The story of Seidy

Seidy is not currently in use for newborns in the United States: fewer than five babies received the name in 2025. Its story lives in the historical record below.

Since 1992, 344 American babies have been named Seidy. Its peak came in 2013, when 19 newborns received the name, the signature sound of the 2010s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Seidy stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Seidy?

The median living Seidy is about 18 years old; half are between 11 and 24. An estimated 300 people named Seidy are alive in the United States today.

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Seidy year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year	Girls	Girls rank
2025	–	–
2024	12	#8,867
2023	13	#8,421
2022	9	#11,101
2021	8	#12,032
2020	8	#11,975
2019	8	#12,269
2018	7	#13,589
2017	6	#15,628
2016	–	–
2015	10	#10,750
2014	10	#10,825
2013	19	#6,684
2012	10	#11,126
2011	11	#10,285
2010	11	#10,356
2009	11	#10,554
2008	17	#7,692
2007	17	#7,683
2006	13	#9,187
2005	13	#8,782
2004	14	#8,160
2003	15	#7,517
2002	12	#8,740
2001	14	#7,662
2000	6	#14,687
1995	11	#7,974
1990	–	–
1985	–	–
1980	–	–
1975	–	–
1970	–	–
1965	–	–
1960	–	–
1955	–	–
1950	–	–
1945	–	–
1940	–	–
1935	–	–
1930	–	–
1925	–	–
1920	–	–
1915	–	–
1910	–	–
1905	–	–
1900	–	–
1895	–	–
1890	–	–
1885	–	–
1880	–	–

Frequently asked questions

Quick answers about Seidy, drawn from the same Social Security data as the charts above.

How old is the average Seidy?

The median living Seidy is about 18 years old. Half of all living Seidys are between 11 and 24 years old.

How many people named Seidy are alive today?

An estimated 300 people named Seidy are alive in the United States, based on 344 recorded births and Social Security life tables.

How popular is the name Seidy in 2025?

Seidy did not appear in the 2025 Social Security data, which means fewer than five babies received the name that year.

How many people are named Seidy?

344 babies have been named Seidy in the United States since 1992, based on Social Security card applications.

When was the name Seidy most popular?

Seidy peaked in 2013, when 19 newborns received the name.

Is Seidy a boy or girl name?

Seidy is overwhelmingly a girl's name: 100% of babies with the name.

Is the name Seidy rising or falling?

Seidy is declining, less popular now than a decade ago.

Seidy

Seidy popularity over time

The story of Seidy

How old are people named Seidy?

Seidy year by year

Frequently asked questions

Names like Seidy