Add the sample code below to your child theme's functions.php file or in a site specific plugin.
<?php
//* Do NOT include the opening php tag
//* Change formatting for the venue address for the United Kingdom and Canada and Germany and Singapore
function ee_adjust_formatting_venue_address( $address_formats ) {
$address_formats[ 'GB' ] = "{address}%{address2}%{city}%{zip}";
$address_formats[ 'CA' ] = "{address}%{address2}%{city}%{state}%{country}%{zip}";
$address_formats[ 'DE' ] = "{address}%{address2}%{zip} {city}";
$address_formats[ 'NL' ] = "{address}%{address2}%{zip} {city}";
$address_formats[ 'SG' ] = "{address}%{address2}%{city}%{country}%{zip}";
return $address_formats;
}
add_filter( 'FHEE__EE_MultiLine_Address_Formatter__address_formats', 'ee_adjust_formatting_venue_address', 10, 1 );
add_filter( 'FHEE__EE_Inline_Address_Formatter__address_formats', 'ee_adjust_formatting_venue_address', 10, 1 );
References:
http://eventespresso.com/topic/formatting-venue-address-ee4/
https://eventespresso.com/topic/unknown-and-gb-appearing-in-venue-address-when-viewing-event/
http://eventespresso.com/topic/venue-address-display-inline/
https://eventespresso.com/topic/text-getting-added-to-venue-physical-address/
https://eventespresso.com/topic/show-state-name-instead-of-code-in-venue-address/
http://eventespresso.com/topic/spacing-issue-with-venue-manager-address-display/
https://eventespresso.com/topic/event-list-page-settings-not-to-show-address-and-venue-details-do-not-work/
http://eventespresso.com/topic/venue-display-problem/
https://eventespresso.com/topic/address-formatting/
https://eventespresso.com/topic/venues-state-issue/
https://eventespresso.com/topic/position-of-zip-code-in-venue-detail/
https://eventespresso.com/topic/removings-states-uk-counties-and-countries/
http://eventespresso.com/topic/field-state-not-needed-in-europe/
https://eventespresso.com/topic/adress-lay-out-ee-4-version-4-8-29/
https://eventespresso.com/topic/custom-event-page/
https://github.com/woothemes/woocommerce/blob/1b2df3dd3b02e836286b899f858687e33fc0d5aa/includes/class-wc-countries.php#L410
View more recommendations for Event Espresso:
http://enzo12.com/labs/event-espresso/