D Agnolo Johnston Garden Apartments is a 50-plex affordable housing community in Rockton, Illinois. The community is located in the 16th Congressional District of Illinois. D Agnolo Johnston Garden Apartments is owned and. Winnebago County Housing Authority Public Housing Waiting List Status: Public Housing Waiting List is Open IndefinitelyPublic Housing Since this property is owned and, all of the property are based on tenant incomes. Tenants will make a monthly contribution toward rent equal to 30% of their adjusted income. A housing authority may establish a min rent of up to $50. Rockton HUD Rental Assistance Income Limits AMI Band one Person 2 Person three Person 4 Person five Person 6 Person seven Person 8 Person 30%$12, 750 $16, 240 $20, 420 $24, 600 $28, 780 $32, 960 $37, 140 $40, %$21, 250 $24, 300 $27, 350 $30, 350 $32, 800 $35, 250 $37, 650 $40, %$34, 000 $38, 850 $43, 700 $48, 550 $52, 450 $56, 350 $60, 250 $64, 100.