In 2025, 30 US boys were named Demario, making it the 3,681st most common boys’ name of the year, down 393 places from #3,288 in 2024. That is 6 fewer than the 36 boys named Demario in 2024. Its best rank for boys was #504, reached in 1988. The most boys given the name in a single year was 334, in 1989. For comparison, it was #2,283 in 2015 and unranked in 1950.
Social Security card records list Demario in 58 years of the 146 from 1880 to 2025, starting in 1968 with 6 babies. In all, 6,381 US babies have been given the name, 0.3% of them girls and 99.7% boys. Its busiest decade was the 1980s, with 2,235 babies named Demario.
Over the 10 years from 2016 to 2025, 521 US boys were named Demario; the busiest of those years was 2018, with 76. In 2025 that was about 1 in 56,936 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Demari (3,105 babies since 1880). Rarer spellings such as Demaria, Demauri and Demarea are summarised on this page.