Check below code snippet to get shipping and billing address of order by order id.
$orderid = 2;
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$order = $objectManager->create('Magento\Sales\Api\Data\OrderInterface')->load($orderid);
//fetch whole billing information
print_r($order->getBillingAddress()->getData());
//Or fetch specific billing information
echo $order->getBillingAddress()->getCity();
echo $order->getBillingAddress()->getRegionId();
echo $order->getBillingAddress()->getCountryId();
//fetch whole shipping information
print_r($order->getShippingAddress()->getData());
//Or fetch specific shipping information
echo $order->getShippingAddress()->getCity();
echo $order->getShippingAddress()->getRegionId();
echo $order->getShippingAddress()->getCountryId();

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