9th 1/2 St, Monmouth, Illinois - Redfin
27 addresses found on 9th 1/2 St in Monmouth, Illinois. The average lot size on 9th 1/2 St is 12468 sq. ft. The average property tax on 9th 1/2 St is $2.3K/yr. Find an address below to learn more about the property details: