Thirty years of Isaac
Isaac in numbers
Isaac peaked in 2015 with 2,829 boys and has fallen since, to 1,331 in 2025. Its biggest three-year rise came between 2009 and 2012, from 1,979 to 2,682. It ranked 104th in 1996, reached 20th in 2015 and ranks 36th now. On average it was given to 596 boys a year in the late 1990s, 1,289 in the 2000s, 2,519 in the 2010s and 1,666 in the 2020s so far.
† Shapes, averages and turning points are Baby Data calculations from the ONS counts.
Similar spellings in the 2025 list†: Issac (61), Isac (6). Matched by their letters, not by meaning or origin. ONS counts each spelling separately, so these are not added to Isaac.
Milestones
First year in each bandChange
- On last year-2%1,360 to 1,331
- 5 years-36%2,074 to 1,331
- 10 years-53%2,829 to 1,331
- 20 years+2%1,302 to 1,331
- Since 1996×3480 to 1,331
- Total, 1996 to 202550,460boys
† All changes and totals are Baby Data calculations from ONS counts. A total adds only the published years.
Across the three nations, 2025
Each from its own statistics office, never added togetherRank 36 · ONS · 1,360 in 2024
Rank 56 · NRS · 90 in 2024
Rank 31 · NISRA · 60 in 2024
England and Wales (ONS) count births in the calendar year; Scotland (NRS) and Northern Ireland (NISRA) count births registered in the year. Each comes from its own statistics office and they are never added together.
Year by year, 1996 to 2025 Show all 30 yearsHide the table
| Year | Rank | Babies | Change† | 1 in X† |
|---|---|---|---|---|
| 2025 | 36 | 1,331 | -2% | 1 in 226 |
| 2024 | 37 | 1,360 | -16% | 1 in 224 |
| 2023 | 27 | 1,611 | -7% | 1 in 188 |
| 2022 | 26 | 1,733 | -8% | 1 in 179 |
| 2021 | 25 | 1,888 | -9% | 1 in 170 |
| 2020 | 21 | 2,074 | -11% | 1 in 152 |
| 2019 | 23 | 2,331 | -10% | 1 in 141 |
| 2018 | 20 | 2,578 | +6% | 1 in 131 |
| 2017 | 24 | 2,432 | -9% | 1 in 143 |
| 2016 * | 20 | 2,662 | -6% | 1 in 134 |
| 2015 | 20 | 2,829 | +7% | 1 in 127 |
| 2014 | 25 | 2,636 | +3% | 1 in 135 |
| 2013 | 29 | 2,569 | -4% | 1 in 139 |
| 2012 | 30 | 2,682 | +14% | 1 in 140 |
| 2011 | 33 | 2,352 | +11% | 1 in 158 |
| 2010 | 37 | 2,115 | +7% | 1 in 175 |
| 2009 | 41 | 1,979 | +2% | 1 in 183 |
| 2008 | 39 | 1,948 | +11% | 1 in 186 |
| 2007 | 42 | 1,762 | +32% | 1 in 201 |
| 2006 | 55 | 1,333 | +2% | 1 in 257 |
| 2005 | =53 | 1,302 | +18% | 1 in 254 |
| 2004 | 58 | 1,104 | +17% | 1 in 297 |
| 2003 | 64 | 942 | +1% | 1 in 338 |
| 2002 | 63 | 931 | +17% | 1 in 329 |
| 2001 | 75 | 793 | -1% | 1 in 384 |
| 2000 | =66 | 798 | +12% | 1 in 388 |
| 1999 | 79 | 710 | +7% | 1 in 450 |
| 1998 | 84 | 666 | +26% | 1 in 489 |
| 1997 | 102 | 529 | +10% | 1 in 623 |
| 1996 | 104 | 480 | 1 in 695 |
* ONS’s boys’ 2016 file repeats the October total as September, so the 2016 births total is about 932 too low and 1 in X for 2016 is slightly too low. Rank follows ONS: names with the same count share a rank (shown with =). “Under 3” means the name was given to fewer than 3 babies that year, so ONS did not publish it.
Compare Isaac
Draws the second name on the chart above, on a shared scale.
Share and download
Isaac is in the free dataset (CSV and JSON), with the method and how to cite it.
Source: Office for National Statistics, Baby names in England and Wales, licensed under the Open Government Licence v3.0; National Records of Scotland; NISRA. Exact spellings are counted separately and names given to fewer than 3 babies are not published. Figures marked † are Baby Data calculations. How we calculate