diff --git a/core/modules/views_ui/js/views-admin.es6.js b/core/modules/views_ui/js/views-admin.es6.js
index a3b471f..16e133b 100644
--- a/core/modules/views_ui/js/views-admin.es6.js
+++ b/core/modules/views_ui/js/views-admin.es6.js
@@ -525,6 +525,7 @@
       const group = this.$controlGroup.val();
 
       // Search through the search texts in the form for matching text.
+      let activeViews = 0;
       this.options.forEach((option) => {
         function hasWord(word) {
           return option.searchText.indexOf(word) !== -1;
@@ -541,10 +542,17 @@
         }
 
         option.$div.toggle(found);
+        if (found) {
+          activeViews++;
+        }
       });
 
       // Adapt dialog to content size.
       $(event.target).trigger('dialogContentResize');
+
+      Drupal.announce(
+        Drupal.formatPlural(activeViews, '1 option is available in the modified list.', '@count options are available in the modified list.')
+      );
     },
   });
 
diff --git a/core/modules/views_ui/js/views-admin.js b/core/modules/views_ui/js/views-admin.js
index 1b175d1..3e9ddb5 100644
--- a/core/modules/views_ui/js/views-admin.js
+++ b/core/modules/views_ui/js/views-admin.js
@@ -268,6 +268,7 @@
 
       var group = this.$controlGroup.val();
 
+      var activeViews = 0;
       this.options.forEach(function (option) {
         function hasWord(word) {
           return option.searchText.indexOf(word) !== -1;
@@ -283,9 +284,14 @@
         }
 
         option.$div.toggle(found);
+        if (found) {
+          activeViews++;
+        }
       });
 
       $(event.target).trigger('dialogContentResize');
+
+      Drupal.announce(Drupal.formatPlural(activeViews, '1 option is available in the modified list.', '@count options are available in the modified list.'));
     }
   });
 
diff --git a/core/modules/views_ui/tests/src/FunctionalJavascript/FilterOptionsTest.php b/core/modules/views_ui/tests/src/FunctionalJavascript/FilterOptionsTest.php
index 32b1a40..167388e 100644
--- a/core/modules/views_ui/tests/src/FunctionalJavascript/FilterOptionsTest.php
+++ b/core/modules/views_ui/tests/src/FunctionalJavascript/FilterOptionsTest.php
@@ -56,6 +56,10 @@ public function testFilterOptionsAddFields() {
     $this->assertTrue($page->findField('name[views.views_test_field_1]')->isVisible());
     $this->assertFalse($page->findField('name[views.views_test_field_2]')->isVisible());
 
+    // Check that the new number of rows is set by announce.
+    $session->wait(10000, 'jQuery("#drupal-live-announce").html().indexOf("1 option is available in the modified list.") > -1');
+    $web_assert->elementTextContains('css', '#drupal-live-announce', '1 option is available in the modified list.');
+
     // Test the ".description" field in search.
     $options_search->setValue('FIELD_2_DESCRIPTION');
     $page->waitFor(10, function () use ($page) {
@@ -71,6 +75,11 @@ public function testFilterOptionsAddFields() {
     });
     $this->assertFalse($page->findField('name[views.views_test_field_2]')->isVisible());
     $this->assertFalse($page->findField('name[views.views_test_field_1]')->isVisible());
+
+    // Clear the search and see if the new number of rows is set by announce.
+    $options_search->setValue('');
+    $session->wait(10000, 'jQuery("#drupal-live-announce").html().indexOf("66 options are available") > -1');
+    $web_assert->elementTextContains('css', '#drupal-live-announce', '66 options are available in the modified list.');
   }
 
 }
diff --git a/core/modules/views_ui/views_ui.libraries.yml b/core/modules/views_ui/views_ui.libraries.yml
index 44b6832..cc5985b 100644
--- a/core/modules/views_ui/views_ui.libraries.yml
+++ b/core/modules/views_ui/views_ui.libraries.yml
@@ -7,6 +7,7 @@ views_ui.admin:
   dependencies:
     - core/jquery
     - core/drupal
+    - core/drupal.announce
     - core/drupalSettings
     - core/jquery.once
     - core/jquery.form