diff --git a/database/migrations/2026_04_22_100000_create_postcodes_table.php b/database/migrations/2026_04_22_100000_create_postcodes_table.php
new file mode 100644
index 0000000..7177ebd
--- /dev/null
+++ b/database/migrations/2026_04_22_100000_create_postcodes_table.php
@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('postcodes', function (Blueprint $table) {
+            $table->string('postcode', 7)->primary()->comment('Normalised: uppercase, no spaces');
+            $table->string('outcode', 4)->index();
+            $table->decimal('lat', 10, 7);
+            $table->decimal('lng', 10, 7);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('postcodes');
+    }
+};
diff --git a/database/migrations/2026_04_22_100001_create_outcodes_table.php b/database/migrations/2026_04_22_100001_create_outcodes_table.php
new file mode 100644
index 0000000..4c5e579
--- /dev/null
+++ b/database/migrations/2026_04_22_100001_create_outcodes_table.php
@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('outcodes', function (Blueprint $table) {
+            $table->string('outcode', 4)->primary();
+            $table->decimal('lat', 10, 7);
+            $table->decimal('lng', 10, 7);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('outcodes');
+    }
+};