Katie
Torn between Katie and another name? Compare them side by side →
Meaning
diminutive of Kate, from Katherine; etymology debated, tied to 'pure' since the early Christian era
Famously borne by swimmer Katie Ledecky.
The story
Katie is a diminutive of Kate, which is short for Katherine, and here the record has to correct the baby books: Katherine's etymology is debated. The candidates run from an earlier Greek name to the goddess Hecate, and pure is not among them; that gloss arrived in the early Christian era, when the name became associated with the Greek katharos and the spelling shifted to match. What is certain is Katie's own career. It has stood on American certificates independently since the very first bucket, 5,178 girls in the 1890s, never below five thousand in any finished decade, with 72,883 in the 1980s alone. It runs at 3,324 so far this decade. Katie is not short for anything in those rows; it is the whole signature. The meaning may be debated, but the autonomy is documented.
The formal names behind Katie
Katie is an established short form of each of these names.
Katherine · Greek origin · linked since early Christian times to katharos, "pure," though the name's true root is older and debated; borne by saints, empresses of Russia, and centuries of English queens consort. The K-classic behind Kate, Katie, Kay, and Kitty
Catherine · Greek origin · traditionally "pure"
Katie across languages
One shared root links 26 names across 8 languages.
Shared root: from Greek Aikaterine, associated since early Christian times with katharos, "pure"; that later explanation does not establish the name’s original meaning
The constellation
18 more branches of this family
How popular is Katie around the world?
In the United States, 3,324 babies were named Katie between 2020 and 2025. In Ireland, 107 girls named Katie were born in 2025, the 41st most common name among girls that year.
Katie is on the official records of the United States, Ireland, Scotland, South Australia, Canada, England and Wales, Austria, Mexico City, Spain and Brazil.
United States
1 in 6,600
In the United States, 3,324 babies were named Katie between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Katie peaked in the 1980s and the 1990s in nearly equal measure. Katie went to 1,061 US babies in 2015 and 447 in 2025, 42% of the earlier figure.
Births with a Social Security record. Source: U.S. Social Security Administration
Ireland
1 in 510
In Ireland, 107 girls named Katie were born in 2025, the 41st most common name among girls that year.
share of that year’s name registrations
Exact registered spellings from Irish vital statistics; any name under 3 in a year is withheld at source, and accented spellings (fadas) are recorded reliably only from 2018. Source: Central Statistics Office (Ireland), Irish babies' names
Scotland
1 in 1,300
In Scotland, 34 girls named Katie were registered in 2024, the 131st most common name among girls that year.
share of that year’s name registrations
Births registered in Scotland; different spellings count separately but accents are merged at source, and any spelling under 3 in total is suppressed. Source: National Records of Scotland, babies' first names
South Australia
1 in 3,1002017
In South Australia, 6 girls were registered as Katie in 2017.
share of that year’s name registrations
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Canada
1 in 7,800
In Canada, 47 girls named Katie were born in 2024, the 608th most common name among girls that year.
share of that year’s name registrations
First given names from provincial and territorial vital statistics across Canada; any name-sex-year under 5 is excluded at source, and small Quebec counts carry a randomized adjustment made at source. Shares divide by Statistics Canada’s count of live births for the year; the 2024 count is preliminary. Source: Statistics Canada, first names at birth (table 17-10-0147-01)
England and Wales
1 in 9,900
In England and Wales, 59 girls named Katie were born in 2025, the 650th most common name among girls that year.
share of that year’s name registrations
Birth registrations in England and Wales (not the whole UK); exact spellings are counted separately, and any spelling under 3 in a year is withheld at source. Source: Office for National Statistics, baby names in England and Wales
Austria
1 in 38,000
In Austria, 2 girls named Katie were born in 2025, ranked 1,305th among girls that year, spellings that differ only by special characters counted together.
The count never rose above 4 in a year, too few to chart.
Live births in Austria by year of birth, 1984–2025, from Statistik Austria’s first-name statistics; spellings that differ only by special characters are counted together (umlauts stay apart), every name down to a single birth is published, and the count covers babies with Austrian citizenship only until 2009, every baby from 2010, and from 2015 also births abroad to mothers living in Austria. Shares divide by Statistik Austria’s count of live births from 2010, and before that by the file’s own total for the year. Source: Statistik Austria - data.statistik.gv.at (OGDEXT_VORNAMEN_1, updated 2026-07-09)
Mexico City City
1 in 120,000
In Mexico City, there was 1 registration of Katie in 2022.
share of that year’s registrations in the city
Civil-registry acts in Mexico City by registration year. Counts are lower bounds (names under 6 in a month and borough are removed at source) and count name-instances, not people; compound names are split, so “Maria Jose” counts under each part. 2023, a partial extract through 3 Mar with no cell on record for this name, is excluded. Source: Registro Civil of Mexico City, open data portal, registered given names 2000-2023
Spain
1 in 470,000
In Spain, 96 residents are named Katie, ranked 8,036th among women, with a mean age of 32.1 years.
Residents of Spain on 1 January 2025. Spain publishes how old a name’s living bearers are, not a birth series, so there is no year chart. Source: INE (Spain), Censo de Población anual, 1 January 2025
Brazil
1 in 1M
At the 2022 census, 282 people in Brazil were named Katie, ranked 19,918th, with a median age of 40.
Among people named Katie living in Brazil at the 2022 census, more were born in the 1980s than in any other decade.
people alive at the 2022 census, by decade of birth
People alive and resident in Brazil at the 2022 census, a living-population count, not births; names under 20 are withheld at source. Source: IBGE, Censo Demográfico 2022
Argentina
last on record 2015
Katie is not on the 2024 record for Argentina, where small counts are withheld at source.
The count never rose above 3 in a year, too few to chart.
Given-name components of births in Argentina 2012–2024; national cells are lower bounds and no sex split is published. Source: RENAPER (Argentina), Dirección Nacional de Población, given names 2012-2024
France
last on record 2022
Katie is not on the 2025 record for France, where spellings under 3 in a year are withheld at source.
share of that year’s births on record
Births in France by year of birth, from INSEE’s fichier des prénoms (1900–2025; Mayotte from 2012); exact spellings count separately (Léo and Leo are different names), any spelling under 3 in a year and sex is withheld at source, every count is rounded to the nearest 5 at source, and nametree keeps the spellings that reached 20 in some year. Shares divide by INSEE’s count of births in France from 1957, and before that by the file’s own total for the year; INSEE says the file is not complete before 1946. Source: Insee, fichier des prénoms (last updated 2026-07-16)
Montevideo City
last on record 2009
Katie is not on the 2011 record for Montevideo, whose registry withholds nothing, so the spelling was not given there that year.
The count never rose above 2 in a year, too few to chart.
Births in the department of Montevideo (not all of Uruguay) by first name and year of birth, 1940–2011, from the city’s civil registry, which writes names in capitals, almost always without accents; counted as spelling groups (accent and punctuation variants merged), nothing is withheld at source, and 2012 is excluded as a partial year. Source: Servicio de Registro Civil, Intendencia de Montevideo, Partidas de Registro Civil de Montevideo (Licencia de Datos Abiertos - Uruguay); 2012 dropped as partial
New South Wales
outside the top 100
Katie is not in the 2025 top 100 for New South Wales.
share of that year’s top-100 registrations
New South Wales (not all of Australia) publishes only each year’s 100 most popular names per sex, so a missing year means below that top 100, not rare. Source: NSW Registry of Births, Deaths and Marriages, popular baby names
New Zealand
last on record 2024
Katie is not on the 2025 record for New Zealand, where names under 10 in a year are excluded at source.
share of that year’s name registrations
First given names from New Zealand birth registrations, grouped by registration year; any name under 10 in a year is excluded at source. Shares divide by Stats NZ’s count of births registered to mothers living in New Zealand, under 1% below the registry’s own count. Source: Department of Internal Affairs (New Zealand), baby name popularity over time
Poland
last on record 2017
Katie is not on the 2025 record for Poland, where names given fewer than 2 times in a year are withheld at source.
share of that year’s name registrations
First names given to children born in Poland by year of birth, 2000–2025, from the PESEL population register (Ministry of Digital Affairs); exact spellings count separately (Łukasz and Lukasz are different names), names given fewer than 5 times in a year were left off the list through 2012 and fewer than 2 times from 2013, and the register also counts children born abroad, so its yearly sums run above Poland’s live births. Shares divide by the register’s own published total for the year, never by births. Source: Ministry of Digital Affairs, PESEL register (dane.gov.pl)
Not on the record in Puerto Rico: that registry withholds small counts, so rare uses may sit below its floor.
Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown. Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
When you meet Katie
Most people given the name Katie in the United States were born between 1980 and 1999. The Katie you meet today is most often in her 30s or 40s.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
Keep exploring
Names of sports stars · What is Katie short for? · Climbers and fallers
The Katie deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Katie truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Katie fits with your family’s names and surname.
Does Katie fit YOUR family?
nametree reads your family’s names and finds the ones that belong. Free, private, no ads.
Add Katie to your family’s tree →