Southern Illinois municipal pensioners have collected more than $500M in benefits over last 20 years 09/25/2018 Despite regional struggles and a shrinking population, taxpayers in southern Illinois have been saddled with rapidly growing pension costs. TAGS: IMRF: Illinois Municipal Retirement Fund, Jackson County, Jefferson County, Massac County, municipal pensions, pension guarantee, pensions, Perry County, property taxes, Randolph County, Williamson County