We care what our members and supporters have to say. Please share your questions, concerns and feedback.
Our main address and phone number:
17 N. State St., Suite 1330, Chicago, IL, 60602
Questions about membership and automatic giving
Our membership office is located at: 1543 Wazee St #430 Denver, CO 80202
If you’re a supporter with a recurring gift and want to update your credit card information, visit our Credit Card Update page.
Questions about other ways to give
To contact our planned giving coordinator, call: 1-800-841-7299.
For more general inquiries, email us.
Frequently asked questions
Q: Is my gift tax deductible?
A: Environment Illinois is nonprofit, but due to our legislative work, Environment Illinois is classified as non-tax deductible—a 501(c)(4). We also have a tax-deductible sister organization, Environment Illinois Research & Education Center.