Theodore is an extremely popular boys' name in United States, ranking #10 in 2021 with 9,597 recorded births. The name reached its all-time peak in 2024 with 12,011 births ranking #4. Since 1996, the popularity has increased by 960.4%. In 2021, approximately 1 in every 182 boys born was named Theodore. RISING Recent data shows the name is currently rising.