Josaiah is a distinctive boys' name in United States, ranking #6265 in 2025 with 14 recorded births. The name reached its all-time peak in 2008 with 25 births ranking #4085. Since 1996, the popularity has increased by 100.0%. In 2025, approximately 1 in every 122,005 boys born was named Josaiah. RISING Recent data shows the name is currently rising.