**Update:**  
Version 1 of the API is long shut down.  Here's sample paging on API version 2:

 - [/2.2/tags?page=1&pagesize=100&order=desc&sort=popular&site=stackoverflow][1]
 - [/2.2/tags?page=2&pagesize=100&order=desc&sort=popular&site=stackoverflow][2]
 - etc...

----------

----------
Obsolete, version 1 answer:

    http://api.stackoverflow.com/1.1/tags?pagesize=100&page=1

    http://api.stackoverflow.com/1.1/tags?pagesize=100&page=2

    etc...


  [1]: https://api.stackexchange.com/docs/tags#page=1&pagesize=100&order=desc&sort=popular&filter=default&site=stackoverflow&run=true
  [2]: https://api.stackexchange.com/docs/tags#page=2&pagesize=100&order=desc&sort=popular&filter=default&site=stackoverflow&run=true