Lamoni is a distinctive boys' name in United States, ranking #10306 in 2010 with 7 recorded births. This places Lamoni in the bottom 28% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2010 with 7 births ranking #10306. In 2010, approximately 1 in every 274,059 boys born was named Lamoni. FALLING Recent data shows the name is currently falling.