Eustacio
Eustacio was last recorded in 2006, when 7 babies were given it; 292 Americans have been recorded with it between 1915 and 2006 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Eustacio by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Eustacio?
Unranked in 2025
Its last boys’ rank on record is #9,886, in 2006; SSA lists a name only in years with 5 or more births.
15 babies in 1922, the peak
Eustacio peaked in 1922, when 15 boys were given it, #2,175 among boys’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2006 | 7 | #9,886 | 3.4 |
| 1994 | 8 | #6,544 | 4.1 |
| 1990 | 10 | #5,114 | 4.9 |
| 1988 | 5 | #7,638 | 2.6 |
| 1987 | 5 | #7,305 | 2.7 |
| 1983 | 5 | #6,569 | 2.8 |
| 1981 | 7 | #5,100 | 3.9 |
| 1978 | 5 | #6,108 | 3.0 |
| 1976 | 7 | #4,569 | 4.5 |
| 1975 | 6 | #5,006 | 3.8 |
Every recorded year (44)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 1974 | 6 | #4,827 | 3.8 |
| 1973 | 10 | #3,282 | 6.4 |
| 1970 | 7 | #3,976 | 3.8 |
| 1967 | 7 | #3,351 | 4.0 |
| 1960 | 6 | #3,785 | 2.8 |
| 1959 | 8 | #3,107 | 3.7 |
| 1956 | 5 | #4,121 | 2.4 |
| 1954 | 6 | #3,566 | 2.9 |
| 1953 | 6 | #3,544 | 3.0 |
| 1952 | 7 | #3,185 | 3.6 |
| 1951 | 7 | #3,155 | 3.7 |
| 1950 | 5 | #3,851 | 2.8 |
| 1949 | 6 | #3,447 | 3.4 |
| 1948 | 8 | #2,855 | 4.6 |
| 1947 | 6 | #3,478 | 3.3 |
| 1946 | 5 | #3,683 | 3.1 |
| 1942 | 5 | #3,739 | 3.6 |
| 1940 | 5 | #3,619 | 4.3 |
| 1939 | 5 | #3,655 | 4.5 |
| 1937 | 9 | #2,555 | 8.4 |
| 1935 | 6 | #3,383 | 5.8 |
| 1934 | 8 | #2,812 | 7.7 |
| 1933 | 7 | #3,101 | 7.1 |
| 1932 | 7 | #3,186 | 6.7 |
| 1931 | 7 | #3,201 | 6.7 |
| 1930 | 5 | #4,182 | 4.6 |
| 1929 | 5 | #4,162 | 4.6 |
| 1928 | 5 | #4,350 | 4.5 |
| 1927 | 8 | #3,247 | 7.1 |
| 1925 | 6 | #3,888 | 5.4 |
| 1924 | 6 | #4,032 | 5.3 |
| 1922 | 15 | #2,175 | 13.8 |
| 1921 | 8 | #3,303 | 7.3 |
| 1915 | 5 | #4,012 | 5.9 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Eustacio a boy’s or a girl’s name?
Eustacio has been recorded only for boys: SSA lists no girls with the name in 44 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Eustacio: the SSA national file counts each sex separately.
How many people are named Eustacio, and how old are they?
An estimated 143 Americans named Eustacio and born in the U.S. are alive in 2026 (49% of everyone recorded); the median is 53 years old and half are between 43 and 73. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 709 people named Eustacio (0 women and girls, 709 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 165 born in the U.S. The Census count is 4.3 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 2 names spelled alike, given to 997 babies since 1880, Eustacio is the second most given (29% of them).
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 Eustacio
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 Eustacio and names like it
- Compare Eustacio and EustaceBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1920sEustacio peaked in 1922.
- Texas’s most given namesThe state where SSA recorded the most babies named Eustacio since 1910.
- The top names of 1922The year the most babies were named Eustacio.
- The names of the Baby BoomersMost people named Eustacio alive today were born 1946-1964.
- Names starting with EMost given first.