How do move the Zip / Post Code below the city field?

[Walrus]

How do I move the Zip / Postal Code field so its *below* the City field? I have tried to move the following code block down one in address.tpl but it has no effect.

{if $field_name eq 'postcode'}
{assign var="postCodeExist" value=true}
<div class="required postcode form-group unvisible">
<label class="control-label col-sm-4" for="postcode">{l s='Zip / Postal Code'} ^*</label>
<div class="col-sm-6">
<input class="is_required validate form-control" data-validate="{$address_validation.$field_name.validate}" type="text" id="postcode" name="postcode" value="{if isset($smarty.post.postcode)}{$smarty.post.postcode}{else}{if isset($address->postcode)}{$address->postcode|escape:'html':'UTF-8'}{/if}{/if}" />
</div>
</div>
{/if}

 

Thanks.