Alethea

In the United States, 416 babies were named Alethea between 2020 and 2025.

Shape drawn from US Social Security baby-name records. Alethea peaked in the 2010s and the 2020s in nearly equal measure.

Births with a Social Security record. Source: U.S. Social Security Administration

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In Canada, 6 girls named Alethea were born in 2024, ranked 3,027th 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)

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In England and Wales, 9 girls named Alethea were born in 2025, ranked 2,788th 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

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At the 2022 census, 247 people in Brazil were named Alethea, ranked 21,858th, with a median age of 46.
Among people named Alethea living in Brazil at the 2022 census, more were born in the 1970s 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

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Alethea is not on the 2025 record for Austria, which publishes every first name down to a single birth, so the name was not given there that year.
The count never rose above 1 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)

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Alethea is not on the 2024 record for Scotland, where spellings under 3 in total are suppressed at source.
The count never rose above 3 in a year, too few to chart.

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

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Alethea 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

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