The Ecclesiastical Province of Dubuque encompasses four dioceses of the Catholic Church in the US state of Iowa.
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<span class="int-own-work" lang="en">Own work</span> based on the <a href="https://en.wikipedia.org/wiki/en:File:Iowa_Locator_Map.PNG" class="extiw" title="w:en:File:Iowa Locator Map.PNG">Iowa Locator Map</a>