Missouri Henry--Randy and the McGoverns maid.
Malachai Henry--Missouri brother who is also head mechanic on the model A. As a member of Braggs troop he is killed in a shootout with the highwaymen.
Two-Tone--Missouris husband whom hates work but invents corn whiskey which is used for medical reasons and for regular alchohol.
Lib McGovern--Randys wife who cooks for the household as well as supports Randy with everything he does in the book
Bill McGovern--Libs father who is Malachais assistant on the Model A as well as a member of Braggs troop.
Mark Bragg--Randys brother who informs Randy of the impending attack on the United States with the infamous term Alas, Babylon.
Helen Bragg--Marks wife, who helps to support the household on River Road. At the end of the book she falls in love with Dan Gunn.
Dan Gunn--The town doctor who is beaten mercilessly by the highwaymen, saves lives throughout the book and falls in love with Helen Bragg at the end of the book.
Sam Hazzard--Former admiral in the military whose radio is River Roads link to the outside world until the battery runs out.
Ben Franklin Bragg--Marks son who helps Randy with manly duties around the area and kills the dog who had been eating the Henrys chickens. Ben also discovers that armadillos are a new source of food.
Peyton Bragg-Helens young daughter who is temporarily blinded by the flash from the explosion. Her mischevious explorations give the family such resources as fish, razors and lamps.