diff --git a/app/code/Magento/Ui/view/base/web/js/form/element/region.js b/app/code/Magento/Ui/view/base/web/js/form/element/region.js
index 1b2ce8889af10112ddcd654a875e73c4823576ea..0edb4c1966b54e7f81fe921177e0d26f198d3697 100644
--- a/app/code/Magento/Ui/view/base/web/js/form/element/region.js
+++ b/app/code/Magento/Ui/view/base/web/js/form/element/region.js
@@ -35,6 +35,11 @@ define([
                 return;
             }
             option = options[value];
+
+            if (typeof option === 'undefined') {
+                return;
+            }
+
             defaultPostCodeResolver.setUseDefaultPostCode(!option['is_zipcode_optional']);
 
             if (this.skipValidation) {