Small code snippet to display Account address as a single block just like in standard page
<apex:outputText label="Shipping Address"
escape="false"
value="{!IF(NOT(ISNULL(Account.ShippingStreet)),'{0}<br/>{1}, {2} {3}<br/>{4}', ' ')}">
<apex:param value="{!Account.ShippingStreet}" />
<apex:param value="{!Account.ShippingCity}" />
<apex:param value="{!Account.ShippingState}" />
<apex:param value="{!Account.ShippingPostalCode}" />
<apex:param value="{!Account.ShippingCountry}" />
</apex:outputText>