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The REALTOR® Association of Southwestern Illinois is a voluntary trade association located in Belleville whose nearly 900 members are engaged in all facets of the real estate industry.

The REALTOR® Association of Southwestern Illinois works to protect the rights of private property owners by recommending and promoting legislation that safeguards and advances the interest of real property ownership. RASI primarily serves the Illinois Metro-East market area, including St. Clair, Monroe, Randolph and Clinton Counties, except for the easternmost townships of Irishtown, Clement, Lake, East Fork, Meridian and Brookside.

Empowering REALTORS® to succeed through education, advocacy, service, & programs.