Kiefer
Kiefer was given to 6 boys in 2025, #11,395 among boys’ names; 1,950 Americans have been recorded with it since 1988 (Social Security Administration, published May 2026).
An estimated 1,900 Americans named Kiefer and born in the U.S. are alive in 2026 (97% of everyone recorded); the median is 29 years old and half are between 20 and 34.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kiefer by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Kiefer?
#11,395 among boys’ names, 2025
Kiefer fell from #4,032 in 2015 to #11,395 in 2025 among boys’ names; its share of boys born fell from 13.6 to 3.5 per million.
204 babies in 1991, the peak
Kiefer peaked in 1991, when 204 boys were given it, #706 among boys’ names. The 6 births of 2025 are 3% of that peak.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 6 | #11,395 | under 0.01 |
| 2024 | 5 | #13,350 | under 0.01 |
| 2023 | 6 | #11,607 | under 0.01 |
| 2021 | 11 | #7,380 | 0.01 |
| 2020 | 10 | #7,819 | 0.01 |
| 2019 | 9 | #8,568 | 0.01 |
| 2018 | 12 | #6,943 | 0.01 |
| 2017 | 17 | #5,416 | 0.01 |
| 2016 | 21 | #4,702 | 0.01 |
| 2015 | 26 | #4,032 | 0.01 |
Every recorded year (37)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2014 | 32 | #3,421 | 0.02 |
| 2013 | 23 | #4,252 | 0.01 |
| 2012 | 36 | #3,144 | 0.02 |
| 2011 | 31 | #3,480 | 0.02 |
| 2010 | 49 | #2,532 | 0.03 |
| 2009 | 48 | #2,607 | 0.02 |
| 2008 | 55 | #2,362 | 0.03 |
| 2007 | 65 | #2,104 | 0.03 |
| 2006 | 84 | #1,693 | 0.04 |
| 2005 | 64 | #1,971 | 0.03 |
| 2004 | 68 | #1,820 | 0.03 |
| 2003 | 61 | #1,919 | 0.03 |
| 2002 | 57 | #1,957 | 0.03 |
| 2001 | 24 | #3,569 | 0.01 |
| 2000 | 33 | #2,775 | 0.02 |
| 1999 | 52 | #1,888 | 0.03 |
| 1998 | 53 | #1,858 | 0.03 |
| 1997 | 71 | #1,490 | 0.04 |
| 1996 | 68 | #1,488 | 0.04 |
| 1995 | 70 | #1,420 | 0.04 |
| 1994 | 97 | #1,154 | 0.05 |
| 1993 | 97 | #1,142 | 0.05 |
| 1992 | 114 | #1,025 | 0.06 |
| 1991 | 204 | #706 | 0.10 |
| 1990 | 143 | #851 | 0.07 |
| 1989 | 93 | #1,096 | 0.05 |
| 1988 | 35 | #1,891 | 0.02 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Kiefer a boy’s or a girl’s name?
Kiefer has been recorded only for boys: SSA lists no girls with the name in 37 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Kiefer: the SSA national file counts each sex separately.
How many people are named Kiefer, and how old are they?
1,900 alive in 2026, estimated
That is 97% of the 1,950 Americans ever recorded as Kiefer. The median Kiefer alive today is 29 years old; half are between 20 and 34.
The 2020 Census counted 1,816 people named Kiefer (26 women and girls, 1,790 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,878 born in the U.S. The Census count is 3% below that prediction.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Millennials | 1981-1996 | 883 |
| Generation Z | 1997-2012 | 837 |
| Generation Alpha | 2013-2025 | 177 |
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 Kiefer born?
The states with the most babies named Kiefer are California, Texas and Illinois, with 52% of its births recorded by state since 1910.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| California | 185 | not ranked | 0.7× |
| Texas | 83 | not ranked | 0.5× |
| Illinois | 37 | not ranked | 0.4× |
| Florida | 33 | not ranked | 0.3× |
| New York | 30 | not ranked | 0.2× |
| Ohio | 23 | not ranked | 0.3× |
| Indiana | 20 | not ranked | 0.5× |
| Missouri | 18 | not ranked | 0.4× |
| Washington | 18 | not ranked | 0.4× |
| Michigan | 17 | not ranked | 0.3× |
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 Kiefer 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 2 names spelled alike, given to 2,116 babies since 1880, Kiefer is the most given (92% of them).
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 Kiefer
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 Kiefer and names like it
- Compare Kiefer and KiefferBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1990sKiefer peaked in 1991.
- California’s most given namesThe state where SSA recorded the most babies named Kiefer since 1910.
- The top names of 1991The year the most babies were named Kiefer.
- The names of the MillennialsMost people named Kiefer alive today were born 1981-1996.
- Names starting with KMost given first.