IMRF - Illinois Municipal Retirement Fund
- Provides employees of local governments and school districts (with the exception of the City of Chicago and Cook County) with a system for the payment of retirement, disability, and death benefits.
- http://www.imrf.org/

IACE - Illinois Association of County Engineers
- A collective forum of the 102 appointed county officials in direct charge of county highway transportation. Includes membership details, organization, employment opportunities, discussion board, classified ads, and links.
- http://www.iaceng.org/

CCAO - Illinois Chief County Assessment Officers
- Provides resources for certification for tax assessment officers. Includes member directory, Board of Directors for the Illinois Property Assessment Institute, legislation and committees.
- http://www.il-ccao.org/

ILCMA - Illinois City/County Management Association
- Focused on supporting and improving municipal and county management, strengthening local government through its programs and services, events and conferences, job bank, resources, and contacts.
- http://www.ilcma.org/

Township Officials of Illinois
- Private, not-for-profit organization that currently represents nearly all of the state's 1,433 townships. Features includes information on education, lobbying and promotion activities for townships.
- http://www.toi.org/

Illinois Municipal Review
- Monthly publication on municipal government published by the Illinois Municipal League since 1952. Presented by Illinois Periodicals Online (IPO), a digital imaging project at the Northern Illinois University Libraries funded by the Illinois State Library
- http://www.lib.niu.edu/ipo/imlistyrs.html

IML - Illinois Municipal League
- Established in 1914, membership is comprised of the cities, villages, and incorporated towns of the State of Illinois.
- http://www.iml.org/

IGFOA - Illinois Government Finance Officers Association
- Seeks to establish uniformity in state and local government accounting practices, along with support and networking of the profession. Includes events calendar, certification, news, chapters and contacts.
- http://www.igfoa.org/

IAMMA - Illinois Association of Municipal Management Assistants
- Offers development to professionals serving as assistant administrators/managers, administrative interns, assistant department managers and directors in the state's municipalities, counties, and councils. Internships, mailing list, message board, and cont
- http://www.iamma.org/