How Many People Are Named Lydia?
An estimated 131,850 people in the United States have the first name Lydia. While not in the top 50, it remains a well-known name ranking #408 overall. It is almost exclusively a female name. The average bearer is 31 years old, and Lydia peaked in popularity in 2014 with 3,652 births that year.
Below you will find a full statistical profile of Lydia 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 Lydia paired with any surname.
Key Insights
- While Lydia is overwhelmingly female, 277 male births have been registered with this name since 1880.
Estimated Living Americans
131,850
About 1 in 2,600 people in the U.S.
Rarity
Common
Predicted Gender
Female
99.8% confidence
Average Age
31
years old
Peak Year
2014
3,652 births
Total Registered
184,572
since 1880
Gender Distribution for Lydia
Lydia is almost exclusively a female name. Out of 184,572 total births registered, 99.8% were female.
Lydia as a male name
Ranked #11,443 in 2020
6 male births in 2020
Peak: 2004 (16 births)
Lydia as a female name
Ranked #97 in 2024
2,663 female births in 2024
Peak: 2014 (3,652 births)
Lydia: Popularity Over Time
SSA records for Lydia span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 32,734 babies were registered. While Lydia is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Lydia by Decade
How has Lydia 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1880s | 3,902 | 0 | 3,902 | |
| 1890s | 5,942 | 0 | 5,942 | |
| 1900s | 5,247 | 5 | 5,242 | |
| 1910s | 9,025 | 0 | 9,025 | |
| 1920s | 9,303 | 27 | 9,276 | |
| 1930s | 6,700 | 36 | 6,664 | |
| 1940s | 9,215 | 27 | 9,188 | |
| 1950s | 14,634 | 22 | 14,612 | |
| 1960s | 11,737 | 28 | 11,709 | |
| 1970s | 7,642 | 29 | 7,613 | |
| 1980s | 11,124 | 51 | 11,073 | |
| 1990s | 16,990 | 0 | 16,990 | |
| 2000s | 26,430 | 28 | 26,402 | |
| 2010s | 32,734 | 18 | 32,716 | |
| 2020s | 13,947 | 6 | 13,941 | |
Lydia by State
Birth registrations for Lydia span all 51 states and territories in the SSA database. The highest counts are in Texas, California, New York. The lowest are in Wyoming, Vermont, Delaware. On average, about 3,266 Lydias were registered per state.
Lydia + Last Name Combinations
How many people share a full name with Lydia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lydia
Other first names starting with L with a similar number of bearers.
Lydia: Questions and Answers
How many people in the U.S. are named Lydia?
We estimate approximately 131,850 people named Lydia 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 2,600 Americans share this first name.
Is Lydia a common name?
Lydia is classified as "Common" and is more popular than 99.6% of all first names in the SSA database. A total of 184,572 births have been registered with this name since 1880.
When was Lydia most popular?
Lydia reached peak popularity in 2014, when 3,652 babies were given this name. The average age of a living person named Lydia is approximately 31 years old, reflecting when the name was most commonly given.
Is Lydia a female name?
Lydia is predominantly female. 99.8% of people with this name are female. See the gender breakdown above for full details.
How many Lydia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lydia Smith, Lydia Johnson, Lydia 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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