diff --git a/src/Provider/zh_TW/Address.php b/src/Provider/zh_TW/Address.php
index a7ad6caa10..321bc88bd7 100644
--- a/src/Provider/zh_TW/Address.php
+++ b/src/Provider/zh_TW/Address.php
@@ -187,7 +187,7 @@ class Address extends \Faker\Provider\Address
             '峨眉鄉', '尖石鄉', '五峰鄉',
         ],
         '苗栗縣' => [
-            '苗栗市', '苑裡鎮', '通霄鎮', '竹南鎮', '頭份鎮',
+            '苗栗市', '苑裡鎮', '通霄鎮', '竹南鎮', '頭份市',
             '後龍鎮', '卓蘭鎮', '大湖鄉', '公館鄉', '銅鑼鄉',
             '南庄鄉', '頭屋鄉', '三義鄉', '西湖鄉', '造橋鄉',
             '三灣鄉', '獅潭鄉', '泰安鄉',
@@ -202,7 +202,7 @@ class Address extends \Faker\Provider\Address
         ],
         '彰化縣' => [
             '彰化市', '鹿港鎮', '和美鎮', '線西鄉', '伸港鄉',
-            '福興鄉', '秀水鄉', '花壇鄉', '芬園鄉', '員林鎮',
+            '福興鄉', '秀水鄉', '花壇鄉', '芬園鄉', '員林市',
             '溪湖鎮', '田中鎮', '大村鄉', '埔鹽鄉', '埔心鄉',
             '永靖鄉', '社頭鄉', '二水鄉', '北斗鎮', '二林鎮',
             '田尾鄉', '埤頭鄉', '芳苑鄉', '大城鄉', '竹塘鄉',
@@ -232,7 +232,7 @@ class Address extends \Faker\Provider\Address
             '將軍區', '北門區', '新化區', '善化區', '新市區',
             '安定區', '山上區', '玉井區', '楠西區', '南化區',
             '左鎮區', '仁德區', '歸仁區', '關廟區', '龍崎區',
-            '永康區', '東區', '南區', '西區', '北區', '中區',
+            '永康區', '東區', '南區', '中西區', '北區',
             '安南區', '安平區',
         ],
         '高雄市' => [
@@ -241,7 +241,7 @@ class Address extends \Faker\Provider\Address
             '田寮區', '阿蓮區', '路竹區', '湖內區', '茄萣區',
             '永安區', '彌陀區', '梓官區', '旗山區', '美濃區',
             '六龜區', '甲仙區', '杉林區', '內門區', '茂林區',
-            '桃源區', '三民區', '鹽埕區', '鼓山區', '左營區',
+            '桃源區', '那瑪夏區', '鹽埕區', '鼓山區', '左營區',
             '楠梓區', '三民區', '新興區', '前金區', '苓雅區',
             '前鎮區', '旗津區', '小港區',
         ],
diff --git a/test/Provider/zh_TW/AddressTest.php b/test/Provider/zh_TW/AddressTest.php
new file mode 100644
index 0000000000..968d27d3d3
--- /dev/null
+++ b/test/Provider/zh_TW/AddressTest.php
@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Faker\Test\Provider\zh_TW;
+
+use Faker\Provider\zh_TW\Address;
+use Faker\Test\TestCase;
+
+/**
+ * @group legacy
+ */
+final class AddressTest extends TestCase
+{
+    public function testAdministrativeDistrictNamesAreCurrent(): void
+    {
+        $city = $this->getCityData();
+
+        self::assertContains('頭份市', $city['苗栗縣']);
+        self::assertNotContains('頭份鎮', $city['苗栗縣']);
+
+        self::assertContains('員林市', $city['彰化縣']);
+        self::assertNotContains('員林鎮', $city['彰化縣']);
+
+        self::assertContains('中西區', $city['臺南市']);
+        self::assertNotContains('中區', $city['臺南市']);
+        self::assertNotContains('西區', $city['臺南市']);
+
+        self::assertContains('那瑪夏區', $city['高雄市']);
+    }
+
+    public function testAdministrativeDistrictNamesAreUniqueWithinEachCounty(): void
+    {
+        foreach ($this->getCityData() as $county => $districts) {
+            self::assertSame(
+                $districts,
+                array_values(array_unique($districts)),
+                sprintf('%s contains duplicate administrative districts.', $county),
+            );
+        }
+    }
+
+    /**
+     * @return array<string, list<string>>
+     */
+    private function getCityData(): array
+    {
+        $reflection = new \ReflectionClass(Address::class);
+        $property = $reflection->getProperty('city');
+        $property->setAccessible(true);
+
+        return $property->getValue();
+    }
+
+    protected function getProviders(): iterable
+    {
+        yield new Address($this->faker);
+    }
+}