Isiac
Isiac was last recorded in 2010, when 7 babies were given it; 195 Americans have been recorded with it between 1912 and 2010 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isiac by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Isiac?
Unranked in 2025
Its last boys’ rank on record is #10,076, in 2010; SSA lists a name only in years with 5 or more births.
15 babies in 2001, the peak
Isiac peaked in 2001, when 15 boys were given it, #4,973 among boys’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2010 | 7 | #10,076 | 3.6 |
| 2009 | 7 | #10,259 | 3.5 |
| 2008 | 7 | #10,294 | 3.4 |
| 2007 | 14 | #6,031 | 6.7 |
| 2006 | 9 | #8,265 | 4.4 |
| 2005 | 14 | #5,678 | 7.0 |
| 2004 | 13 | #5,928 | 6.5 |
| 2003 | 12 | #6,005 | 6.1 |
| 2002 | 11 | #6,246 | 5.7 |
| 2001 | 15 | #4,973 | 7.7 |
Every recorded year (23)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2000 | 12 | #5,701 | 6.1 |
| 1999 | 8 | #7,423 | 4.2 |
| 1998 | 7 | #7,894 | 3.7 |
| 1997 | 6 | #8,570 | 3.2 |
| 1981 | 5 | #6,678 | 2.8 |
| 1960 | 6 | #3,828 | 2.8 |
| 1933 | 6 | #3,452 | 6.1 |
| 1932 | 5 | #4,023 | 4.8 |
| 1929 | 7 | #3,385 | 6.5 |
| 1926 | 9 | #3,014 | 8.1 |
| 1916 | 5 | #4,195 | 5.6 |
| 1915 | 5 | #4,087 | 5.9 |
| 1912 | 5 | #2,713 | 11.6 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isiac a boy’s or a girl’s name?
Isiac has been recorded only for boys: SSA lists no girls with the name in 23 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isiac: the SSA national file counts each sex separately.
How many people are named Isiac, and how old are they?
An estimated 150 Americans named Isiac and born in the U.S. are alive in 2026 (77% of everyone recorded); the median is 23 years old and half are between 20 and 26. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 297 people named Isiac (0 women and girls, 297 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 154 born in the U.S. The Census count is 1.9 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 8 names spelled alike, given to 368,096 babies since 1880, Isiac is the eighth most given (<1% of them). In 2025 none of their 6,344 babies recorded by SSA was a Isiac (SSA lists a name only with 5 or more babies of one sex).
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.
More about Isiac and names like it
- Compare Isiac and IsaacBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sIsiac peaked in 2001.
- The top names of 2001The year the most babies were named Isiac.
- The names of Generation ZMost people named Isiac alive today were born 1997-2012.
- Names starting with IMost given first.