Trend of the Popularity of Guillermo 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 13 male babies that were named Guillermo in Illinois, which was 0.03% of the total number of male babies born in Illinois in 2024. Between 1980 and 2024, the name Guillermo peaked as a male baby name in Illinois in 2005 with a count of 43 babies, which was 0.06% of the total male babies born in Illinois in 2005.

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

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

Trend of the Percentage of Male Babies who were Named Guillermo 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 Guillermo from 1980 to 2024.

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

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Year	Number of Male Babies	Percent of Total Male Babies (%)
1980	26	0.03
1981	18	0.02
1982	31	0.04
1983	23	0.03
1984	22	0.03
1985	22	0.03
1986	21	0.03
1987	9	0.01
1988	21	0.03
1989	29	0.03
1990	21	0.02
1991	20	0.02
1992	30	0.04
1993	36	0.04
1994	23	0.03
1995	31	0.04
1996	37	0.05
1997	39	0.05
1998	39	0.05
1999	27	0.03
2000	33	0.04
2001	31	0.04
2002	31	0.04
2003	31	0.04
2004	24	0.03
2005	43	0.06
2006	21	0.03
2007	23	0.03
2008	22	0.03
2009	24	0.03
2010	19	0.03
2011	17	0.03
2012	17	0.03
2013	9	0.01
2014	9	0.01
2015	15	0.02
2016	12	0.02
2017	16	0.03
2018	13	0.02
2019	16	0.03
2020	10	0.02
2021	7	0.01
2022	10	0.02
2023	11	0.02
2024	13	0.03