Although the program is primarily written and produced by WGBH of Boston, the production of the animation and voice acting are done in Montreal, Toronto, South Korea, and Hong Kong. The animation of the show was done at AKOM Production Company from season 1 to 11, then at Animation Services (HK) Ltd from season 12 to 15. The entire cast of "Arthur" lives in Montreal or Toronto, where Cookie Jar Entertainment's studios are located. The only segments of the show that are filmed outside Canada are the "A Word from Us Kids" interstitials, filmed at elementary schools or other educational sites in the Boston area. Beginning in Season 11, the "A Word From Us Kids" segment was replaced by a segment called "Postcards from You", where live action videos sent in by young viewers were spotlighted per episode, and then replaced with "A Word from Us Kids" in season 12. The segments are omitted from all airings outside the US.