Isai
Isai was given to 186 boys in 2025, #1,139 among boys’ names; 7,385 Americans have been recorded with it since 1966 (Social Security Administration, published May 2026).
An estimated 7,260 Americans named Isai and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 18 years old and half are between 10 and 25.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isai by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Isai?
#1,139 among boys’ names, 2025
Isai fell from #1,031 in 2015 to #1,139 in 2025 among boys’ names, although its share of boys born rose from 0.10 to 0.11 per 1,000.
333 babies in 2007, the peak
Isai peaked in 2007, when 333 boys were given it, #701 among boys’ names. The 197 births of 2025 (girls and boys) are 59% of that peak.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 186 | #1,139 | 0.11 |
| 2024 | 205 | #1,063 | 0.12 |
| 2023 | 199 | #1,081 | 0.12 |
| 2022 | 160 | #1,232 | 0.09 |
| 2021 | 168 | #1,175 | 0.10 |
| 2020 | 161 | #1,194 | 0.09 |
| 2019 | 207 | #1,011 | 0.12 |
| 2018 | 193 | #1,054 | 0.11 |
| 2017 | 195 | #1,031 | 0.11 |
| 2016 | 185 | #1,066 | 0.10 |
Every recorded year (53)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 197 | #1,031 | 0.10 |
| 2014 | 168 | #1,133 | 0.09 |
| 2013 | 191 | #1,026 | 0.10 |
| 2012 | 212 | #953 | 0.11 |
| 2011 | 237 | #881 | 0.12 |
| 2010 | 241 | #872 | 0.13 |
| 2009 | 270 | #819 | 0.14 |
| 2008 | 310 | #738 | 0.15 |
| 2007 | 333 | #701 | 0.16 |
| 2006 | 305 | #713 | 0.15 |
| 2005 | 274 | #738 | 0.14 |
| 2004 | 275 | #702 | 0.14 |
| 2003 | 243 | #741 | 0.12 |
| 2002 | 245 | #725 | 0.13 |
| 2001 | 206 | #811 | 0.11 |
| 2000 | 161 | #942 | 0.08 |
| 1999 | 179 | #845 | 0.09 |
| 1998 | 144 | #961 | 0.08 |
| 1997 | 141 | #952 | 0.07 |
| 1996 | 149 | #895 | 0.08 |
| 1995 | 128 | #979 | 0.07 |
| 1994 | 114 | #1,040 | 0.06 |
| 1993 | 93 | #1,156 | 0.05 |
| 1992 | 82 | #1,249 | 0.04 |
| 1991 | 90 | #1,159 | 0.04 |
| 1990 | 87 | #1,162 | 0.04 |
| 1989 | 83 | #1,159 | 0.04 |
| 1988 | 46 | #1,578 | 0.02 |
| 1987 | 31 | #1,987 | 0.02 |
| 1986 | 36 | #1,741 | 0.02 |
| 1985 | 36 | #1,708 | 0.02 |
| 1984 | 27 | #2,002 | 0.01 |
| 1983 | 29 | #1,875 | 0.02 |
| 1982 | 21 | #2,370 | 0.01 |
| 1981 | 27 | #2,011 | 0.02 |
| 1980 | 16 | #2,879 | 0.01 |
| 1979 | 16 | #2,826 | 0.01 |
| 1978 | 7 | #4,738 | under 0.01 |
| 1977 | 6 | #5,409 | under 0.01 |
| 1976 | 7 | #4,617 | under 0.01 |
| 1975 | 6 | #5,060 | under 0.01 |
| 1973 | 6 | #4,745 | under 0.01 |
| 1966 | 6 | #3,698 | under 0.01 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isai a boy’s or a girl’s name?
Isai has been given almost only to boys: 45 girls in 53 years of records.
Girls and boys named Isai: the SSA national file counts each sex separately.
How many people are named Isai, and how old are they?
7,260 alive in 2026, estimated
That is 98% of the 7,385 Americans ever recorded as Isai. The median Isai alive today is 18 years old; half are between 10 and 25.
The 2020 Census counted 6,568 people named Isai (101 women and girls, 6,467 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 6,240 born in the U.S. The Census count is 5% above that prediction.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Generation X | 1965-1980 | 64 |
| Millennials | 1981-1996 | 1,040 |
| Generation Z | 1997-2012 | 3,730 |
| Generation Alpha | 2013-2025 | 2,420 |
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 Isai born?
The states with the most babies named Isai are Texas, California and New York, with 58% of its births recorded by state in 2025.
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| Texas | 31 | #848 | 2.4× |
| California | 30 | #820 | 2.0× |
| New York | 11 | #1,077 | 0.4× |
| Florida | 8 | #1,395 | 0.6× |
| Georgia | 8 | #1,030 | 0.7× |
| Washington | 7 | #840 | 1.0× |
| Arizona | 6 | #880 | 1.6× |
| Illinois | 6 | #1,191 | 0.7× |
| New Jersey | 6 | #967 | 0.4× |
| Wisconsin | 6 | #726 | 0.2× |
Where Isai is more common than its national share predicts
Relative to its national share, Isai is most over-represented in Texas: since 1966 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 Isai 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 8 names spelled alike, given to 293,077 babies since 1880, Isai is the third most given (2.5% of them). In 2025 it was given to 197 of their 5,766 babies (3.4%), the second 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 Isai
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 Isai and names like it
- Compare Isai and IsaiahBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sIsai peaked in 2007.
- California’s most given namesThe state where SSA recorded the most babies named Isai since 1910.
- The top names of 2007The year the most babies were named Isai.
- The names of Generation ZMost people named Isai alive today were born 1997-2012.
- Names starting with IMost given first.