People with the first name Lillian
182,256
About 1 in 1,819 Americans had this first name in the 2020 Census.
Measured, privacy-protected national Census count—not a total of historical baby-name records.
U.S. first-name statistics
How common is Lillian?
Lillian was the #306 most frequent first name in the 2020 Census.
National rank
#306
More common than 99.4% of listed first names
Peak year
1920
10,075 SSA-recorded births
2025 births
3,966
#144 across first names
Census frequency
1 in 1,819
Across the 2020 U.S. population
Sex distribution
Reported in the 2020 Census first-name table.
0.1% male99.9% female
Demographic distribution
Aggregated race and Hispanic-origin reporting in the 2020 Census name table.
Reading the result
Lillian across two different records
The Census count answers “how many people had this name?” using a national snapshot of living residents in 2020. The SSA series answers “when was this name popular?” using Social Security card applications associated with births.
Lillian reached its highest published annual SSA count in 1920, with 10,075 recorded births. In 2025, SSA recorded 3,966 babies with the name.
Names do not determine a person’s identity. Demographic percentages above describe national aggregates and should never be applied to an individual.
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