Nicolaus is a rare variant of Nicolas that peaked in 1998 and has since faded.
Nicolaus is a boy name. It last appears in U.S. records in 2023. Nicolaus was first reported in SSA data in 1971 and peaked in 1998 (47 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2023 | 9 | 9 | #8,721 |
| 2020 | 6 | 6 | #11,581 |
| 2019 | 10 | 10 | #8,042 |
| 2018 | 6 | 6 | #11,746 |
| 2017 | 15 | 15 | #5,988 |
| 2015 | 12 | 12 | #6,968 |
| 2014 | 9 | 9 | #8,598 |
| 2013 | 16 | 16 | #5,568 |
| 2012 | 11 | 11 | #7,396 |
| 2011 | 17 | 17 | #5,365 |
| 2010 | 19 | 19 | #4,977 |
| 2009 | 22 | 22 | #4,547 |
| 2008 | 21 | 21 | #4,660 |
| 2007 | 28 | 28 | #3,765 |
| 2006 | 21 | 21 | #4,464 |
| 2005 | 23 | 23 | #4,022 |
| 2004 | 21 | 21 | #4,218 |
| 2003 | 28 | 28 | #3,341 |
| 2002 | 31 | 31 | #2,995 |
| 2001 | 38 | 38 | #2,552 |
| 2000 | 33 | 33 | #2,787 |
| 1999 | 38 | 38 | #2,387 |
| 1998 | 47 | 47 | #2,034 |
| 1997 | 30 | — | #2,663 |
| 1996 | 35 | — | #2,322 |
| 1995 | 46 | — | #1,879 |
| 1994 | 44 | — | #1,917 |
| 1993 | 34 | — | #2,278 |
| 1992 | 29 | — | #2,515 |
| 1991 | 33 | — | #2,214 |
| 1990 | 38 | — | #2,004 |
| 1989 | 31 | — | #2,234 |
| 1988 | 27 | — | #2,287 |
| 1987 | 26 | — | #2,251 |
| 1986 | 24 | — | #2,341 |
| 1985 | 31 | — | #1,906 |
| 1984 | 20 | — | #2,505 |
| 1983 | 30 | — | #1,851 |
| 1982 | 22 | — | #2,319 |
| 1981 | 29 | — | #1,934 |
| 1980 | 30 | — | #1,896 |
| 1979 | 29 | — | #1,895 |
| 1978 | 27 | — | #1,903 |
| 1977 | 9 | — | #4,061 |
| 1976 | 9 | — | #3,916 |
| 1975 | 5 | — | #6,047 |
| 1974 | 7 | — | #4,486 |
| 1973 | 10 | — | #3,373 |
| 1971 | 5 | — | #5,436 |