diff --git a/includes/data-stores/class-wc-shipping-zone-data-store.php b/includes/data-stores/class-wc-shipping-zone-data-store.php
index 453ec877f15..fe9c54d2159 100644
--- a/includes/data-stores/class-wc-shipping-zone-data-store.php
+++ b/includes/data-stores/class-wc-shipping-zone-data-store.php
@@ -74,33 +74,41 @@ class WC_Shipping_Zone_Data_Store extends WC_Data_Store_WP implements WC_Shippin
 	public function read( &$zone ) {
 		global $wpdb;
 
-		$zone_data = false;
-
-		if ( 0 !== $zone->get_id() || '0' !== $zone->get_id() ) {
-			$zone_data = $wpdb->get_row(
-				$wpdb->prepare(
-					"SELECT zone_name, zone_order FROM {$wpdb->prefix}woocommerce_shipping_zones WHERE zone_id = %d LIMIT 1",
-					$zone->get_id()
-				)
-			);
-		}
-
+		// Zone 0 is used as a default if no other zones fit.
 		if ( 0 === $zone->get_id() || '0' === $zone->get_id() ) {
 			$this->read_zone_locations( $zone );
 			$zone->set_zone_name( __( 'Locations not covered by your other zones', 'woocommerce' ) );
 			$zone->read_meta_data();
 			$zone->set_object_read( true );
+
+			/**
+			 * Indicate that the WooCommerce shipping zone has been loaded.
+			 *
+			 * @param WC_Shipping_Zone $zone The shipping zone that has been loaded.
+			 */
 			do_action( 'woocommerce_shipping_zone_loaded', $zone );
-		} elseif ( $zone_data ) {
-			$zone->set_zone_name( $zone_data->zone_name );
-			$zone->set_zone_order( $zone_data->zone_order );
-			$this->read_zone_locations( $zone );
-			$zone->read_meta_data();
-			$zone->set_object_read( true );
-			do_action( 'woocommerce_shipping_zone_loaded', $zone );
-		} else {
+			return;
+		}
+
+		$zone_data = $wpdb->get_row(
+			$wpdb->prepare(
+				"SELECT zone_name, zone_order FROM {$wpdb->prefix}woocommerce_shipping_zones WHERE zone_id = %d LIMIT 1",
+				$zone->get_id()
+			)
+		);
+
+		if ( ! $zone_data ) {
 			throw new Exception( __( 'Invalid data store.', 'woocommerce' ) );
 		}
+
+		$zone->set_zone_name( $zone_data->zone_name );
+		$zone->set_zone_order( $zone_data->zone_order );
+		$this->read_zone_locations( $zone );
+		$zone->read_meta_data();
+		$zone->set_object_read( true );
+
+		/** This action is documented in includes/datastores/class-wc-shipping-zone-data-store.php. */
+		do_action( 'woocommerce_shipping_zone_loaded', $zone );
 	}
 
 	/**