Sirus
Sirus was given to 18 boys in 2025, #5,360 among boys’ names; 358 Americans have been recorded with it since 1995 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Sirus by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Sirus?
#5,360 among boys’ names, 2025
Sirus rose from #8,626 in 2015 to #5,360 in 2025 among boys’ names; its share of boys born rose from 4.7 to 10.5 per million.
22 babies in 2020, the peak
Sirus peaked in 2020, when 22 boys were given it, #4,516 among boys’ names. The 18 births of 2025 are 82% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 18 | #5,360 | 10.5 |
| 2024 | 13 | #6,772 | 7.5 |
| 2023 | 20 | #5,038 | 11.7 |
| 2022 | 14 | #6,421 | 8.0 |
| 2021 | 15 | #5,986 | 8.6 |
| 2020 | 22 | #4,516 | 12.7 |
| 2019 | 19 | #5,122 | 10.6 |
| 2018 | 16 | #5,737 | 8.8 |
| 2017 | 20 | #4,907 | 10.8 |
| 2016 | 11 | #7,530 | 5.8 |
Every recorded year (26)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 9 | #8,626 | 4.7 |
| 2014 | 12 | #6,988 | 6.2 |
| 2013 | 16 | #5,615 | 8.5 |
| 2012 | 11 | #7,469 | 5.8 |
| 2011 | 9 | #8,657 | 4.7 |
| 2010 | 11 | #7,497 | 5.7 |
| 2009 | 14 | #6,375 | 7.1 |
| 2008 | 15 | #6,018 | 7.4 |
| 2007 | 9 | #8,811 | 4.3 |
| 2006 | 15 | #5,738 | 7.3 |
| 2005 | 17 | #5,001 | 8.5 |
| 2004 | 19 | #4,569 | 9.6 |
| 2003 | 12 | #6,192 | 6.1 |
| 2002 | 9 | #7,544 | 4.6 |
| 2001 | 7 | #9,088 | 3.6 |
| 1995 | 5 | #10,103 | 2.6 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Sirus a boy’s or a girl’s name?
Sirus has been recorded only for boys: SSA lists no girls with the name in 26 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Sirus: the SSA national file counts each sex separately.
How many people are named Sirus, and how old are they?
An estimated 354 Americans named Sirus and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 12 years old and half are between 6 and 19. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 319 people named Sirus (5 women and girls, 314 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 259 born in the U.S. The Census count is 23% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
How common is the spelling Sirus?
Sirus is a less common spelling of Cyrus: SSA has recorded 358 Sirus and 29,286 Cyrus since 1880.
Of these 6 names spelled alike, given to 32,958 babies since 1880, Sirus is the fifth most given (1.1% of them). In 2025 it was given to 18 of their 1,456 babies (1.2%), the fourth most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Sirus
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Sirus and names like it
- Compare Sirus and CyrusBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sSirus peaked in 2020.
- California’s most given namesThe state where SSA recorded the most babies named Sirus since 1910.
- The top names of 2020The year the most babies were named Sirus.
- The names of Generation AlphaMost people named Sirus alive today were born 2013-2025.
- Names starting with SMost given first.