How Many People Are Named Marylouise?
An estimated 774 people in the United States have the first name Marylouise. It is almost exclusively a female name. The average bearer is 61 years old, and Marylouise peaked in popularity in 1923 with 61 births that year.
Below you will find a full statistical profile of Marylouise as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Marylouise paired with any surname.
Estimated Living Americans
774
About 1 in 442,835 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
61
years old
Peak Year
1923
61 births
Total Registered
1,920
since 1880
Gender Distribution for Marylouise
Marylouise is almost exclusively a female name. Out of 1,920 total births registered, 100.0% were female.
Marylouise as a female name
Ranked #12,975 in 2023
7 female births in 2023
Peak: 1923 (61 births)
Marylouise: Popularity Over Time
SSA records for Marylouise span from the 1900s to the 2020s, covering 13 decades of naming data. The most popular decade for this name was the 1940s, when 403 babies were registered. Marylouise has declined significantly from its peak in the 1940s. Recent registrations are a fraction of what they were at the name's height.
Marylouise by Decade
How has Marylouise tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Marylouise by State
Birth registrations for Marylouise span all 7 states and territories in the SSA database. The highest counts are in Pennsylvania, New York, California. The lowest are in Illinois, New Jersey, Ohio. On average, about 72 Marylouises were registered per state.
Marylouise + Last Name Combinations
How many people share a full name with Marylouise as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Marylouise
Other first names starting with M with a similar number of bearers.
Marylouise: Questions and Answers
How many people in the U.S. are named Marylouise?
We estimate approximately 774 people named Marylouise are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 442,835 Americans share this first name.
Is Marylouise a common name?
Marylouise is classified as "Very Rare" and is more popular than 88.3% of all first names in the SSA database. A total of 1,920 births have been registered with this name since 1880.
When was Marylouise most popular?
Marylouise reached peak popularity in 1923, when 61 babies were given this name. The average age of a living person named Marylouise is approximately 61 years old, reflecting when the name was most commonly given.
Is Marylouise a female name?
Marylouise is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Marylouise Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Marylouise Smith, Marylouise Johnson, Marylouise Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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