As we consider who we are called to reach with the Gospel in this area, I noticed a good article on the effect of teaching about the kingdom of God in a particular kind of neighborhood. It includes the following quote which I consider to be a good definition of the kingdom of God.
“The Kingdom of God is the redemptive reign of God dynamically active to establish his rule among men, and that this Kingdom, which will appear as an apocalyptic act at the end of the age, has already come into human history in the person and mission of Jesus to overcome evil, to deliver men from its power, and to bring them into the blessings of God’s reign. The Kingdom involves two great moments: fulfillment within history, and consummation at the end of history.” (In Gospel of the Kingdom: Scriptural Studies in the Kingdom of God, George Ladd).