I have a few corporate pages where the company will list all of the addresses of their different offices. Some of these pages can contain 100+ site locations. I was in the process of revamping these pages and wondered if there was any real benefit to adding Structured Data Markup, such as the microformats advocated by Google [google.com] or Schema.org [schema.org].

I've used microformats for years on the footers of some sites, but I'm not sure I can find a real benefit in terms of the search engines. This seems to benefit single location pages, but when I've got 100+ listings am I getting any benefit?

The down-side I can see is that it makes maintenance of the lists a bit more difficult. Breaking addresses down in some countries is a lot more difficult than others. (Try parsing a Chinese or Thai address into street, locality, region...) There are always addresses that have parts that seem to fall outside the standard.

TLDR: Is it worthwhile to use structured data markup on a page that lists a lot of addresses?