Contact Us

Contact Us

Questions and Concerns

ISA is dedicated to providing quality customer service. Our customer service team looks forward to assisting you with your service needs, so please contact our office by clicking this link to email us or by calling +1.217.355.9411.

Mailing Address

International Society of Arboriculture
PO Box 3129
Champaign, IL 61826-3129
United States

Physical Address

International Society of Arboriculture
2101 West Park Court
Champaign, IL 61821
United States

Phone and Fax

Toll Free: 1.888.472.8733 (US and Canada)
Phone: +1.217.355.9411
FAX: +1.217.355.9516

Hours of Business

Monday through Friday
8 a.m. to 5 p.m. (Central Standard Time)

Periodically throughout the year the office is closed for holidays. Closure announcements can be found below.

 

March 30 Spring Day (Easter Friday)
May 28 Memorial Day (U.S. National Holiday)
July 4 Independence Day (U.S. National Holiday)
September 3 Labor Day (U.S. National Holiday)
November 22-23 Thanksgiving Holiday (U.S. National Holiday)
December 25 - January 1 Winter Holiday (Christmas and New Year)
April 19 Spring Day (Easter Friday)
May 27 Memorial Day (U.S. National Holiday)
July 4 Independence Day (U.S. National Holiday)
September 2 Labor Day (U.S. National Holiday)
November 28-29 Thanksgiving Holiday (U.S. National Holiday)
December 25 - January 1 Winter Holiday (Christmas and New Year)