Yes, you can visit world market online, but you'll miss out on some demographic specials. You can also use the store locator on their website to find a location, you'd like to shop at. I have only seen this chain in cities with huge populations.
This store is great! They are usually found within or near a bed bath & beyond. Super cute home goods at affordable prices. They are also online, but if you travel to NY there is one on 6th ave right off the f train.