diff --git a/types/japan-postal-code/index.d.ts b/types/japan-postal-code/index.d.ts
new file mode 100644
index 0000000000..7cec125eae
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+++ b/types/japan-postal-code/index.d.ts
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+// Type definitions for japan-postal-code 0.2
+// Project: https://github.com/mzp/japan-postal-code
+// Definitions by: Takesi Tokugawa <https://github.com/TokugawaTakesi>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export as namespace JapanPostalCodeLibrary;
+
+export = JapanPostalCode;
+
+declare const JapanPostalCode: JapanPostalCode.API;
+
+declare namespace JapanPostalCode {
+  interface API {
+    get: FetchPostalCodeMethod;
+  }
+
+  interface FetchPostalCodeMethod {
+    (stringifiedPostalCode: string, callback: Callback): void;
+  }
+
+  interface Callback {
+    (addressData: AddressData): void;
+  }
+
+  interface AddressData {
+    prefecture: string;
+    city: string;
+    area: string;
+    street: string;
+  }
+}
diff --git a/types/japan-postal-code/japan-postal-code-tests.ts b/types/japan-postal-code/japan-postal-code-tests.ts
new file mode 100644
index 0000000000..5e24d1cd21
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+++ b/types/japan-postal-code/japan-postal-code-tests.ts
@@ -0,0 +1,8 @@
+import JapanPostalCode from "japan-postal-code";
+
+JapanPostalCode.get('1000001', (addressData: JapanPostalCode.AddressData) => {
+  console.log(addressData.prefecture);
+  console.log(addressData.city);
+  console.log(addressData.area);
+  console.log(addressData.street);
+});
diff --git a/types/japan-postal-code/tsconfig.json b/types/japan-postal-code/tsconfig.json
new file mode 100644
index 0000000000..cffba759f5
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+++ b/types/japan-postal-code/tsconfig.json
@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "esModuleInterop": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "japan-postal-code-tests.ts"
+    ]
+}
diff --git a/types/japan-postal-code/tslint.json b/types/japan-postal-code/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
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+++ b/types/japan-postal-code/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }