The name Isayah reached its peak in 2007, with 46 registrations (ranked #2663). It had only entered records 15 years earlier, in 1992. Since the peak, the name has eased to well outside the top 1,000 (around #5895) today, averaging about 16 new babies per year. Isayah's usage has held roughly steady recently. Across all years on record, approximately 781 American babies have carried this name.