Trend of the Popularity of Leo as a Male Baby Name in Illinois

Updated on December 6, 2025.

Data Source: Social Security Administration (SSA).

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In 2024, there were 294 male babies that were named Leo in Illinois, which was 0.59% of the total number of male babies born in Illinois in 2024. Between 1980 and 2024, the name Leo peaked as a male baby name in Illinois in 2021 with a count of 364 babies, which was 0.68% of the total male babies born in Illinois in 2021.

The first chart below show the trend of the number of male babies in Illinois that were named Leo, and the second chart shows the percent of male babies in Illinois that were named Leo.

Trend of the Number of Male Babies who were Named Leo in Illinois

Trend of the Percentage of Male Babies who were Named Leo in Illinois

The table below below shows the trend of the number of male babies and the percentage of male babies born in Illinois who were named Leo from 1980 to 2024.

Trend of the Popularity of Leo as a Male Baby Name in Illinois

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Year	Number of Male Babies	Percent of Total Male Babies (%)
1980	20	0.02
1981	31	0.04
1982	22	0.03
1983	19	0.02
1984	14	0.02
1985	25	0.03
1986	17	0.02
1987	20	0.02
1988	15	0.02
1989	22	0.03
1990	18	0.02
1991	32	0.04
1992	31	0.04
1993	31	0.04
1994	29	0.03
1995	24	0.03
1996	26	0.03
1997	26	0.03
1998	24	0.03
1999	29	0.04
2000	30	0.04
2001	37	0.05
2002	48	0.06
2003	77	0.10
2004	72	0.09
2005	69	0.09
2006	80	0.10
2007	66	0.09
2008	81	0.11
2009	87	0.12
2010	107	0.15
2011	112	0.17
2012	165	0.25
2013	182	0.28
2014	191	0.29
2015	246	0.37
2016	274	0.43
2017	306	0.49
2018	338	0.57
2019	359	0.63
2020	341	0.62
2021	364	0.68
2022	340	0.66
2023	350	0.70
2024	294	0.59