Over the past 110 years, 86 953 boys and 3 058 girls have been named Lonnie. The name Lonnie ranks 311th in the United States among the most common names for boys. For the first time more than ten times newborns were named Lonnie in 1910. The peak of popularity of the name Lonnie came in the 1940s and 1950s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.