Miia
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Meaning
a spelling of Mia, a pet form of Maria, a name of uncertain meaning, with the double i used in Finnish and in Ukrainian passports
How popular is Miia around the world?
In the United States, 69 babies were named Miia between 2020 and 2025. In Poland, 88 girls named Miia were born in 2025, the 130th most common name among girls that year.
Miia is on the official records of the United States, Poland, Austria, Chile, England and Wales, Argentina and Spain.
United States
1 in 320,000
In the United States, 69 babies were named Miia between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Miia has stayed rare in US records the whole time: no peak decade to name.
Births with a Social Security record. Source: U.S. Social Security Administration
Poland
1 in 2,800
In Poland, 88 girls named Miia were born in 2025, the 130th most common name among girls that year.
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)
Austria
1 in 76,000
In Austria, 1 girl named Miia was born in 2025, ranked 1,875th among girls that year, spellings that differ only by special characters counted together.
The count never rose above 2 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)
Chile
1 in 89,000
In Chile, 2 girls were registered as Miia in 2021, every accent spelling counted together.
The count never rose above 6 in a year, too few to chart.
First-name registrations with Chile’s civil registry by year of registration, 1920–2021, counted as spelling groups (Sofía, Sofia and Sofìa are one name, shown with its most-registered spelling); the registry withholds nothing, nametree keeps the groups that reached 5 registrations in some year, and shares divide by every registration of the year. Source: Servicio de Registro Civil e Identificación (Chile) via the guaguas package, first-name registrations 1920-2021
England and Wales
1 in 150,000
In England and Wales, 4 girls named Miia were born in 2025, ranked 4,867th among girls that year.
The count never rose above 9 in a year, too few to chart.
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
Argentina
1 in 330,000
In Argentina, 2 newborns were given the name Miia in 2024.
The count never rose above 2 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
Spain
1 in 410,000
In Spain, 110 residents are named Miia, ranked 7,215th among women, with a mean age of 5.5 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
Canada
last on record 2021
Miia is not on the 2024 record for Canada, where names under 5 in a year are excluded at source.
The count never rose above 7 in a year, too few to chart.
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)
Mexico City City
last on record 2016
Miia is not on the 2022 record for Mexico City, where small counts are withheld at source.
The count never rose above 5 in a year, too few to chart.
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
South Australia
last on record 2006
Miia is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 1 in a year, too few to chart.
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
Not on the record in Puerto Rico, Ireland, New Zealand and Scotland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the Montevideo record for 1940 to 2011: that registry withholds nothing, so this spelling was not given there in those years. Not on the France record: nametree keeps spellings that reached 20 births 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 Miia
Most people given the name Miia in the United States are children or teenagers today. The name belongs to this generation.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
Keep exploring
The Miia deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Miia 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 Miia fits with your family’s names and surname.
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