In 2025, 38 US boys were named Kollin, making it the 3,166th most common boys’ name of the year, up 867 places from #4,033 in 2024. That is 11 more than the 27 boys named Kollin in 2024. Its best rank for boys was #1,242, reached in 1996. The most boys given the name in a single year was 128, in 2009. For comparison, it was #1,926 in 2015 and unranked in 1950.
Social Security card records list Kollin in 52 years of the 146 from 1880 to 2025, starting in 1970 with 7 babies. In all, 2,782 US babies have been given the name, 0.2% of them girls and 99.8% boys. Its busiest decade was the 2000s, with 958 babies named Kollin.
Over the 10 years from 2016 to 2025, 451 US boys were named Kollin; the busiest of those years was 2017, with 73. In 2025 that was about 1 in 44,949 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Colin (134,151 babies since 1880), Collin (81,962 babies since 1880) and Kolin (1,945 babies since 1880).