"Checkout" (and "the checkouts" implying a combination of several) is known also in the British Isles.
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(#13)
Native language English (Midlands UK)
"
The checkout is the area of a supermarket where the tills are, with their accompanying assistants (= checkout operators), desks, conveyor belts etc."
http://forum.wordreference.com/showthread.php?t=1712418&p=12...++++++++++++
(#15)
Native language British English
"
The checkout is the whole area and process of paying for something in a shop."
http://forum.wordreference.com/showthread.php?t=1712418&p=12...++++++++++++
(#4)
Location Belfast, Ireland
Native language English-Ireland (top end)
"In my head, if the goods are set on one of those moving belt gizmos the whole set-up is a
checkout.
The thingy with the buttons and the drawer of cash underneath is a till.
The megamarket out in the country with a huge carpark has
checkouts.
The newsagent down the road has a till."
http://forum.wordreference.com/showthread.php?t=2079851&s=18...