diff --git a/core/config/schema/core.data_types.schema.yml b/core/config/schema/core.data_types.schema.yml
index 130d4cc..8b17713 100644
--- a/core/config/schema/core.data_types.schema.yml
+++ b/core/config/schema/core.data_types.schema.yml
@@ -56,6 +56,12 @@ label:
   label: 'Label'
   translatable: true
 
+# String containing singular and plural forms, separated by EXT.
+plural_string:
+  type: string
+  label: 'Plural string'
+  translatable: true
+
 # Internal Drupal path
 path:
   type: string
diff --git a/core/modules/config_translation/config_translation.module b/core/modules/config_translation/config_translation.module
index b4f882b..91350c7 100644
--- a/core/modules/config_translation/config_translation.module
+++ b/core/modules/config_translation/config_translation.module
@@ -188,6 +188,7 @@ function config_translation_config_schema_info_alter(&$definitions) {
     'text_format' => '\Drupal\config_translation\FormElement\TextFormat',
     'mapping' => '\Drupal\config_translation\FormElement\ListElement',
     'sequence' => '\Drupal\config_translation\FormElement\ListElement',
+    'plural_string' => '\Drupal\config_translation\FormElement\PluralString',
   );
 
   // Enhance the text and date type definitions with classes to generate proper
diff --git a/core/modules/config_translation/src/FormElement/FormElementBase.php b/core/modules/config_translation/src/FormElement/FormElementBase.php
index e13cc31..7db01e1 100644
--- a/core/modules/config_translation/src/FormElement/FormElementBase.php
+++ b/core/modules/config_translation/src/FormElement/FormElementBase.php
@@ -91,7 +91,6 @@ public function getTranslationBuild(LanguageInterface $source_language, Language
    *   A render array for the source value.
    */
   protected function getSourceElement(LanguageInterface $source_language, $source_config) {
-    // @todo Should support singular+plurals https://www.drupal.org/node/2454829
     if ($source_config) {
       $value = '<span lang="' . $source_language->getId() . '">' . nl2br($source_config) . '</span>';
     }
@@ -162,7 +161,6 @@ protected function getSourceElement(LanguageInterface $source_language, $source_
    */
   protected function getTranslationElement(LanguageInterface $translation_language, $source_config, $translation_config) {
     // Add basic properties that apply to all form elements.
-    // @todo Should support singular+plurals https://www.drupal.org/node/2454829
     return array(
       '#title' => $this->t('!label <span class="visually-hidden">(!source_language)</span>', array(
         '!label' => $this->t($this->definition['label']),
diff --git a/core/modules/config_translation/src/FormElement/PluralString.php b/core/modules/config_translation/src/FormElement/PluralString.php
new file mode 100644
index 0000000..99e4cbf
--- /dev/null
+++ b/core/modules/config_translation/src/FormElement/PluralString.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\config_translation\FormElement\PluralString.
+ */
+
+namespace Drupal\config_translation\FormElement;
+
+use Drupal\Component\Utility\SafeMarkup;
+use Drupal\Core\Config\Config;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\language\Config\LanguageConfigOverride;
+
+/**
+ * Defines the plural string textfield elements for the configuration
+ * translation interface.
+ */
+class PluralString extends FormElementBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getSourceElement(LanguageInterface $source_language, $source_config) {
+    $plurals = $this->getNumberOfPlurals($source_language->getId());
+    $values = explode(LOCALE_PLURAL_DELIMITER, $source_config);
+    $element = array(
+      '#type' => 'fieldset',
+      '#title' => $this->t($this->definition->getLabel()),
+      '#tree' => TRUE,
+    );
+    for ($i = 0; $i < $plurals; $i++) {
+      $element[] = array(
+        '#type' => 'item',
+        '#title' => SafeMarkup::format('@label <span class="visually-hidden">(@source_language)</span>', array(
+          '@label' => $i == 0 ? $this->t('Singular form') : $this->formatPlural($i, 'First plural form', '@count. plural form'),
+          '@source_language' => $source_language->getName(),
+        )),
+        '#markup' => SafeMarkup::format('<span lang="@lancode">@value</span>', array(
+          '@langcode' => $source_language->getId(),
+          '@value' => $values[$i] ?: $this->t('(Empty)'),
+        )),
+      );
+    }
+    return $element;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getTranslationElement(LanguageInterface $translation_language, $source_config, $translation_config) {
+    $plurals = $this->getNumberOfPlurals($translation_language->getId());
+    $values = explode(LOCALE_PLURAL_DELIMITER, $translation_config);
+    $element = array(
+      '#type' => 'fieldset',
+      '#title' => $this->t($this->definition->getLabel()),
+      '#tree' => TRUE,
+    );
+    for ($i = 0; $i < $plurals; $i++) {
+      $element[] = array(
+        '#type' => 'textfield',
+        '#title' => SafeMarkup::format('@label <span class="visually-hidden">(@translation_language)</span>', array(
+          '@label' => $i == 0 ? $this->t('Singular form') : $this->formatPlural($i, 'First plural form', '@count. plural form'),
+          '@translation_language' => $translation_language->getName(),
+        )),
+        '#default_value' => isset($values[$i]) ? $values[$i] : '',
+        '#attributes' => array('lang' => $translation_language->getId()),
+      );
+    }
+    return $element;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setConfig(Config $base_config, LanguageConfigOverride $config_translation, $config_values, $base_key = NULL) {
+    $config_values = implode(LOCALE_PLURAL_DELIMITER, $config_values);
+    parent::setConfig($base_config, $config_translation, $config_values, $base_key);
+  }
+
+}
diff --git a/core/modules/config_translation/src/Tests/ConfigTranslationUiTest.php b/core/modules/config_translation/src/Tests/ConfigTranslationUiTest.php
index c7218df..172bc8e 100644
--- a/core/modules/config_translation/src/Tests/ConfigTranslationUiTest.php
+++ b/core/modules/config_translation/src/Tests/ConfigTranslationUiTest.php
@@ -89,6 +89,7 @@ protected function setUp() {
         'administer themes',
         'bypass node access',
         'administer content types',
+        'translate interface',
       ]
     );
     // Create and login user.
@@ -610,6 +611,53 @@ public function testViewsTranslationUI() {
   }
 
   /**
+   * Test translation of plural strings with multiple plural forms in config.
+   */
+  public function testPluralConfigStrings() {
+    $this->drupalLogin($this->adminUser);
+
+    // First import a .po file with multiple plural forms.
+    // This will also automatically add the 'sl' language.
+    $name = tempnam('temporary://', "sl_") . '.po';
+    file_put_contents($name, $this->getPoFile());
+    $this->drupalPostForm('admin/config/regional/translate/import', array(
+      'langcode' => 'sl',
+      'files[file]' => $name,
+    ), t('Import'));
+
+    // Translate the files view, as this one uses numeric formatters.
+    $description = 'Singular form';
+    $field_value = '1 place';
+    $field_value_plural = '@count places';
+    $translation_url = 'admin/structure/views/view/files/translate/sl/add';
+    $this->drupalGet($translation_url);
+
+    // Make sure original text is present on this page, in addition to 2 new
+    // empty fields.
+    $this->assertRaw($description);
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][0]', $field_value);
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][1]', $field_value_plural);
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][2]', '');
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][3]', '');
+
+    // Then make sure it also works.
+    $edit = [
+      'translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][0]' => $field_value . ' SL',
+      'translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][1]' => $field_value_plural . ' 1 SL',
+      'translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][2]' => $field_value_plural . ' 2 SL',
+      'translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][3]' => $field_value_plural . ' 3 SL',
+    ];
+    $this->drupalPostForm($translation_url, $edit, t('Save translation'));
+
+    // Make sure the values have changed.
+    $this->drupalGet($translation_url);
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][0]', "$field_value SL");
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][1]', "$field_value_plural 1 SL");
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][2]', "$field_value_plural 2 SL");
+    $this->assertFieldByName('translation[config_names][views.view.files][display][default][display_options][fields][count][format_plural_string][3]', "$field_value_plural 3 SL");
+  }
+
+  /**
    * Test translation storage in locale storage.
    */
   public function testLocaleDBStorage() {
@@ -936,4 +984,19 @@ protected function assertDisabledTextarea($id) {
     )));
   }
 
+  /**
+   * Helper function that returns a .po file with multiple plural forms.
+   */
+  public function getPoFile() {
+    return <<< EOF
+msgid ""
+msgstr ""
+"Project-Id-Version: Drupal 8\\n"
+"MIME-Version: 1.0\\n"
+"Content-Type: text/plain; charset=UTF-8\\n"
+"Content-Transfer-Encoding: 8bit\\n"
+"Plural-Forms: nplurals=4; plural=(((n%100)==1)?(0):(((n%100)==2)?(1):((((n%100)==3)||((n%100)==4))?(2):3)));\\n"
+EOF;
+  }
+
 }
diff --git a/core/modules/views/config/schema/views.field.schema.yml b/core/modules/views/config/schema/views.field.schema.yml
index 1c884fb..39a21d8 100644
--- a/core/modules/views/config/schema/views.field.schema.yml
+++ b/core/modules/views/config/schema/views.field.schema.yml
@@ -117,7 +117,7 @@ views.field.numeric:
       type: boolean
       label: 'Format plural'
     format_plural_string:
-      type: label
+      type: plural_string
       label: 'Singular and one or more plurals'
     prefix:
       type: label