Marcio
Marcio was given to 6 boys in 2025, #11,505 among boys’ names; 384 Americans have been recorded with it since 1970 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Marcio by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Marcio?
#11,505 among boys’ names, 2025
Marcio fell from #6,564 in 2015 to #11,505 in 2025 among boys’ names; its share of boys born fell from 6.8 to 3.5 per million.
16 babies in 1986, the peak
Marcio peaked in 1986, when 16 boys were given it, #3,071 among boys’ names. The 6 births of 2025 are 38% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 6 | #11,505 | 3.5 |
| 2024 | 7 | #10,533 | 4.1 |
| 2023 | 7 | #10,388 | 4.1 |
| 2022 | 7 | #10,465 | 4.0 |
| 2021 | 10 | #7,940 | 5.7 |
| 2019 | 11 | #7,450 | 6.1 |
| 2017 | 9 | #8,578 | 4.9 |
| 2016 | 8 | #9,382 | 4.2 |
| 2015 | 13 | #6,564 | 6.8 |
| 2013 | 9 | #8,521 | 4.8 |
Every recorded year (45)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2012 | 11 | #7,365 | 5.8 |
| 2011 | 8 | #9,301 | 4.2 |
| 2010 | 5 | #13,528 | 2.6 |
| 2009 | 8 | #9,557 | 4.0 |
| 2008 | 7 | #10,609 | 3.4 |
| 2007 | 7 | #10,479 | 3.4 |
| 2006 | 8 | #9,261 | 3.9 |
| 2005 | 6 | #10,980 | 3.0 |
| 2004 | 10 | #7,339 | 5.0 |
| 2003 | 13 | #5,764 | 6.6 |
| 2002 | 11 | #6,360 | 5.7 |
| 2000 | 6 | #9,857 | 3.1 |
| 1999 | 9 | #6,896 | 4.7 |
| 1998 | 8 | #7,281 | 4.2 |
| 1996 | 9 | #6,313 | 4.8 |
| 1995 | 7 | #7,499 | 3.7 |
| 1994 | 7 | #7,462 | 3.6 |
| 1993 | 5 | #9,620 | 2.5 |
| 1992 | 11 | #5,110 | 5.5 |
| 1991 | 10 | #5,350 | 4.9 |
| 1990 | 11 | #4,877 | 5.4 |
| 1989 | 16 | #3,542 | 8.0 |
| 1988 | 9 | #5,054 | 4.7 |
| 1987 | 7 | #5,854 | 3.7 |
| 1986 | 16 | #3,071 | 8.7 |
| 1985 | 5 | #7,179 | 2.7 |
| 1984 | 7 | #5,344 | 3.9 |
| 1983 | 13 | #3,348 | 7.3 |
| 1982 | 7 | #5,379 | 3.9 |
| 1980 | 6 | #5,965 | 3.4 |
| 1979 | 7 | #5,166 | 4.1 |
| 1978 | 5 | #6,414 | 3.0 |
| 1973 | 11 | #3,146 | 7.1 |
| 1971 | 6 | #4,728 | 3.4 |
| 1970 | 5 | #5,175 | 2.7 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Marcio a boy’s or a girl’s name?
Marcio has been recorded only for boys: SSA lists no girls with the name in 45 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Marcio: the SSA national file counts each sex separately.
How many people are named Marcio, and how old are they?
An estimated 371 Americans named Marcio and born in the U.S. are alive in 2026 (97% of everyone recorded); the median is 27 years old and half are between 14 and 38. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 2,501 people named Marcio (6 women and girls, 2,495 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 338 born in the U.S. The Census count is 7.4 times 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).
Names spelled alike
Of these 5 names spelled alike, given to 106,370 babies since 1880, Marcio is the fifth most given (<1% of them). In 2025 it was given to 6 of their 1,353 babies (<1%), 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 Marcio
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 Marcio and names like it
- Compare Marcio and MarcoBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1980sMarcio peaked in 1986.
- California’s most given namesThe state where SSA recorded the most babies named Marcio since 1910.
- The top names of 1986The year the most babies were named Marcio.
- The names of the MillennialsMost people named Marcio alive today were born 1981-1996.
- Names starting with MMost given first.