Isaias
Isaias was given to 755 boys in 2025, #426 among boys’ names; 18,644 Americans have been recorded with it since 1915 (Social Security Administration, published May 2026).
An estimated 17,900 Americans named Isaias and born in the U.S. are alive in 2026 (96% of everyone recorded); the median is 16 years old and half are between 7 and 25.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isaias by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Isaias?
#426 among boys’ names, 2025
Isaias rose from #552 in 2015 to #426 in 2025 among boys’ names; its share of boys born rose from 0.27 to 0.44 per 1,000.
755 babies in 2025, the peak
Isaias peaked in 2025, when 755 boys were given it, #426 among boys’ names. In 2024 it went to 704 boys.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 755 | #426 | 0.44 |
| 2024 | 704 | #449 | 0.41 |
| 2023 | 705 | #441 | 0.41 |
| 2022 | 676 | #455 | 0.39 |
| 2021 | 600 | #491 | 0.34 |
| 2020 | 632 | #472 | 0.37 |
| 2019 | 580 | #495 | 0.32 |
| 2018 | 550 | #515 | 0.30 |
| 2017 | 508 | #547 | 0.27 |
| 2016 | 541 | #538 | 0.29 |
Every recorded year (108)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 520 | #552 | 0.27 |
| 2014 | 500 | #550 | 0.26 |
| 2013 | 499 | #533 | 0.26 |
| 2012 | 513 | #513 | 0.27 |
| 2011 | 475 | #538 | 0.25 |
| 2010 | 526 | #494 | 0.27 |
| 2009 | 569 | #481 | 0.29 |
| 2008 | 551 | #497 | 0.27 |
| 2007 | 521 | #509 | 0.25 |
| 2006 | 480 | #530 | 0.23 |
| 2005 | 475 | #518 | 0.24 |
| 2004 | 486 | #503 | 0.24 |
| 2003 | 382 | #578 | 0.19 |
| 2002 | 401 | #551 | 0.21 |
| 2001 | 435 | #518 | 0.22 |
| 2000 | 364 | #566 | 0.19 |
| 1999 | 332 | #586 | 0.17 |
| 1998 | 338 | #581 | 0.18 |
| 1997 | 253 | #649 | 0.13 |
| 1996 | 288 | #612 | 0.15 |
| 1995 | 237 | #686 | 0.12 |
| 1994 | 195 | #752 | 0.10 |
| 1993 | 192 | #752 | 0.10 |
| 1992 | 178 | #784 | 0.09 |
| 1991 | 165 | #799 | 0.08 |
| 1990 | 157 | #810 | 0.08 |
| 1989 | 144 | #831 | 0.07 |
| 1988 | 112 | #905 | 0.06 |
| 1987 | 94 | #976 | 0.05 |
| 1986 | 100 | #915 | 0.05 |
| 1985 | 95 | #936 | 0.05 |
| 1984 | 97 | #887 | 0.05 |
| 1983 | 86 | #950 | 0.05 |
| 1982 | 92 | #938 | 0.05 |
| 1981 | 83 | #998 | 0.05 |
| 1980 | 82 | #999 | 0.05 |
| 1979 | 76 | #1,020 | 0.04 |
| 1978 | 57 | #1,180 | 0.03 |
| 1977 | 46 | #1,348 | 0.03 |
| 1976 | 66 | #1,022 | 0.04 |
| 1975 | 42 | #1,351 | 0.03 |
| 1974 | 48 | #1,208 | 0.03 |
| 1973 | 54 | #1,112 | 0.03 |
| 1972 | 34 | #1,464 | 0.02 |
| 1971 | 48 | #1,188 | 0.03 |
| 1970 | 31 | #1,533 | 0.02 |
| 1969 | 28 | #1,540 | 0.02 |
| 1968 | 24 | #1,624 | 0.01 |
| 1967 | 21 | #1,731 | 0.01 |
| 1966 | 29 | #1,437 | 0.02 |
| 1965 | 25 | #1,572 | 0.01 |
| 1964 | 24 | #1,631 | 0.01 |
| 1963 | 24 | #1,640 | 0.01 |
| 1962 | 24 | #1,640 | 0.01 |
| 1961 | 23 | #1,712 | 0.01 |
| 1960 | 20 | #1,835 | 0.01 |
| 1959 | 23 | #1,686 | 0.01 |
| 1958 | 23 | #1,660 | 0.01 |
| 1957 | 23 | #1,695 | 0.01 |
| 1956 | 25 | #1,585 | 0.01 |
| 1955 | 17 | #1,929 | 0.01 |
| 1954 | 16 | #1,998 | 0.01 |
| 1953 | 22 | #1,649 | 0.01 |
| 1952 | 30 | #1,388 | 0.02 |
| 1951 | 20 | #1,698 | 0.01 |
| 1950 | 23 | #1,560 | 0.01 |
| 1949 | 18 | #1,789 | 0.01 |
| 1948 | 18 | #1,783 | 0.01 |
| 1947 | 9 | #2,763 | under 0.01 |
| 1946 | 16 | #1,847 | 0.01 |
| 1945 | 21 | #1,467 | 0.02 |
| 1944 | 14 | #1,924 | 0.01 |
| 1943 | 12 | #2,221 | 0.01 |
| 1942 | 18 | #1,704 | 0.01 |
| 1941 | 14 | #1,950 | 0.01 |
| 1940 | 10 | #2,397 | 0.01 |
| 1939 | 17 | #1,670 | 0.02 |
| 1938 | 8 | #2,752 | 0.01 |
| 1937 | 11 | #2,266 | 0.01 |
| 1936 | 14 | #1,925 | 0.01 |
| 1935 | 20 | #1,563 | 0.02 |
| 1934 | 21 | #1,532 | 0.02 |
| 1933 | 12 | #2,148 | 0.01 |
| 1932 | 13 | #2,146 | 0.01 |
| 1931 | 12 | #2,263 | 0.01 |
| 1930 | 16 | #1,924 | 0.01 |
| 1929 | 23 | #1,547 | 0.02 |
| 1928 | 10 | #2,747 | 0.01 |
| 1927 | 10 | #2,798 | 0.01 |
| 1926 | 12 | #2,486 | 0.01 |
| 1925 | 9 | #3,025 | 0.01 |
| 1924 | 11 | #2,735 | 0.01 |
| 1922 | 9 | #3,124 | 0.01 |
| 1921 | 7 | #3,694 | 0.01 |
| 1920 | 7 | #3,637 | 0.01 |
| 1919 | 6 | #3,931 | 0.01 |
| 1917 | 6 | #3,748 | 0.01 |
| 1915 | 6 | #3,611 | 0.01 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isaias a boy’s or a girl’s name?
Isaias has been recorded only for boys: SSA lists no girls with the name in 108 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isaias: the SSA national file counts each sex separately.
How many people are named Isaias, and how old are they?
17,900 alive in 2026, estimated
That is 96% of the 18,644 Americans ever recorded as Isaias. The median Isaias alive today is 16 years old; half are between 7 and 25.
The 2020 Census counted 19,228 people named Isaias (134 women and girls, 19,094 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 14,147 born in the U.S. The Census count is 36% 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.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 52 |
| Baby Boomers | 1946-1964 | 267 |
| Generation X | 1965-1980 | 635 |
| Millennials | 1981-1996 | 2,210 |
| Generation Z | 1997-2012 | 6,990 |
| Generation Alpha | 2013-2025 | 7,710 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
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).
Where are babies named Isaias born?
The states with the most babies named Isaias are Texas, California and Florida, with 49% of its births recorded by state in 2025.
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| Texas | 181 | #215 | 2.4× |
| California | 138 | #270 | 2.1× |
| Florida | 41 | #452 | 0.9× |
| Illinois | 28 | #380 | 0.8× |
| New York | 26 | #592 | 0.7× |
| New Jersey | 25 | #339 | 0.8× |
| Arizona | 24 | #326 | 1.4× |
| Colorado | 23 | #283 | 1.0× |
| Virginia | 21 | #383 | 0.4× |
| North Carolina | 17 | #578 | 0.6× |
Where Isaias is more common than its national share predicts
Relative to its national share, Isaias is most over-represented in Texas: since 1915 it was given 2.4 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Isaias with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 3 names spelled alike, given to 19,028 babies since 1880, Isaias is the most given (98% of them). In 2025 it was given to 755 of their 767 babies (98%), again the most given.
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 Isaias
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 Isaias and names like it
- Compare Isaias and IsaisBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sIsaias peaked in 2025.
- California’s most given namesThe state where SSA recorded the most babies named Isaias since 1910.
- The top names of 2025The year the most babies were named Isaias.
- The names of Generation AlphaMost people named Isaias alive today were born 2013-2025.
- Names starting with IMost given first.