A beautiful quiet community, Lake Warren is a private lake located 5 miles north of Monmouth, IL on Route 67. It is a man-made 52-acre, spring-fed lake with 2-1/2 miles around the perimeter. It is a wonderful place for families to enjoy boating, water-skiing, tubing, swimming, and fishing in the summer and fishing, sledding, ice skating, and ice hockey in the winter. It’s a great place to come and relax anytime of the year.