You can find, and even change, your chapter affiliation easily through your My Account area.
Log onto www.asisonline.org and go to “My Information”->“My Account”->“My Memberships”.
Under the chapter memberships section, you'll find the chapter you're affiliated with and if you click on the chapter's name, you can find the chapter's contact information. Please note that some chapters do charge separate membership dues, so it's always suggested to follow up directly with the chapter to learn more about local offerings.
To change your chapter affiliation, at the bottom of the “My Memberships” page, click on the “Transfer your affiliation today!” hyperlink. Then, select your preferred chapter from the drop-down list. and click the “Change Chapters” button and you’ll be prompted to go through a checkout process at $0 to finalize the change.