In 2025, 658 US girls were named Monroe, making it the 467th most common girls’ name of the year, up 106 places from #573 in 2024. That is 128 more than the 530 girls named Monroe in 2024. Its best rank for girls was #467, reached in this year, 2025. That year also had the most girls given the name: 658. For comparison, it was #721 in 2015 and unranked in 1950.
In 2025, 157 US boys were named Monroe, making it the 1,262nd most common boys’ name of the year, up 18 places from #1,280 in 2024. That is 3 more than the 154 boys named Monroe in 2024. Its best rank for boys was #179, reached in 1882. The most boys given the name in a single year was 375, in 1921. For comparison, it was #1,269 in 2015 and #615 in 1950.
Social Security card records list Monroe in every one of the 146 years from 1880 to 2025; in 1880 there were 53 babies with the name. In all, 24,360 US babies have been given the name, 30% of them girls and 70% boys. Its busiest decade was the 2010s, with 4,499 babies named Monroe.
Over the 10 years from 2016 to 2025, 5,333 US girls were named Monroe; the busiest of those years was 2025, with 658. In 2025 that was about 1 in 2,443 of the girls in SSA’s list for the year.
Among the states, Monroe ranked highest in Utah in 2025, at #124 for girls there. It was not in the top 100 of any state. Rarer spellings such as Munro and Munroe are summarised on this page.