In 2025, 163 US boys were named Mattias, making it the 1,233rd most common boys’ name of the year, down 89 places from #1,144 in 2024. That is 22 fewer than the 185 boys named Mattias in 2024. Its best rank for boys was #1,115, reached in 2021. The most boys given the name in a single year was 185, in 2024. For comparison, it was #1,563 in 2015 and unranked in 1950.
Social Security card records list Mattias in 42 years of the 146 from 1880 to 2025, starting in 1975 with 5 babies. In all, 2,681 US babies have been given the name, all of them boys. Its busiest decade was the 2020s, with 1,003 babies named Mattias.
Over the 10 years from 2016 to 2025, 1,465 US boys were named Mattias; the busiest of those years was 2024, with 185. In 2025 that was about 1 in 10,479 of the boys in SSA’s list for the year.
Among the states, Mattias ranked highest in New Jersey in 2025, at #636 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Matthew (1,659,655 babies since 1880), Mateo (126,778 babies since 1880), Mathew (77,745 babies since 1880) and Matteo (33,499 babies since 1880).