Arthur had 25 seasons. The animated series premiered on PBS on October 7, 1996, and concluded on February 21, 2022, making its run one of the longest in American children’s television.
The show was adapted from Marc Brown’s Arthur children’s books and follows Arthur Read, his family, and friends in the fictional Elwood City. Production began with WGBH and CINAR, later involving Cookie Jar, 9 Story Media Group, and Oasis Animation.
The final season was announced as the show’s 25th and last season in 2021. It contained four half-hour episodes, or eight segments, and ended with “All Grown Up,” which depicted Arthur and his classmates as adults. The series aired 253 half-hour episodes across its 25-season run.
A common mix-up is confusing the number of seasons with the number of episodes or segments. Arthur had 25 seasons, but 253 half-hour episodes and 493 segments, so those larger figures refer to episode totals rather than seasons.