Illinois County Clerk Offices

Select your county to find office hours, fees, forms, and what to bring

💍 In Illinois, the County Clerk issues marriage licenses (750 ILCS 5/203), files Assumed Business Names, and provides certified birth & death certificates. One big catch: your marriage license takes effect in the county that issued it (750 ILCS 5/207) — apply in the county where your ceremony will be, not where you live. If a ceremony does end up in another Illinois county by accident, the same section says the marriage is not invalidated. Fees vary by county ($30–$90) with a one-day waiting period.