According to Cinema Treasures, these were the theaters located in Newburgh. All have been closed, demolished, or burned down:
Academy Theatre
Broadway Theatre
Cameo Theatre
Mid Valley II
Middlehope Drive-In
Park Theatre *exists but is structurally unsound
Ritz Theatre * being restored
Squire Cinema

(source) 1931

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Ray K. had this to say about his memories of the Academy Theater on Cinema Treasures:
“My family and I lived in Newburgh from the 40s until the 90s. In the 50s, my father worked part-time at the Academy as an usher, ticket taker and marquee changer. My brother and I practically grew up at the Academy with the Saturday afternoon matinee being especially memorable–previews, cartoons, a serial and the double feature all for 10 cents.”
Broadway Theater – 131 Broadway, 1240 Seats
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Harold S. shared these memories of the Broadway Theater on Cinema Treasures:
“It has been one of my fondest childhood memories. Kid’s matinee admissions were 35 cents in the early 1960’s. Mr. Boyea let us bring snacks and drinks in with us as he knew most of us couldn’t afford the concession stand. Fishman’s just next door, sold a sleeve of popcorn for 10 cents! Mr. Boyea was great!”
With the money provided for the Ritz Theater, a full-scale Broadway stage will be restored. One can only imagine the possibilities this will provide the revitalization of the city. Safe Harbors of the Hudson, which runs the theater, has already partnered with 2 other theater groups from other towns to cooperate and partner in arts programming and development at The Ritz. There are still some legalities to be processed, but still this brings great hope that Newburgh might be able to connect with some of it’s past roots.
Also, if the Dutch Reformed Church keeps up with it’s progress, it too will eventually become a theater after A LOT of work. But what a great reuse that would be for that building….it was even used as a theater in the past. Keep it going!