In The Town there are "half a dozen strangers not even kin to Snopeses by marriage" who are eating in the restaurant when Eck asks about what is really in the hamburgers he's cooking (34).
In "Lion" and again in Go Down, Moses, the other customers in the Memphis restaurant where Boon Hogganbeck and Quentin eat dinner listen to the drunken Boon's stories of Lion and Old Ben.
Although the narrator of "Centaur in Brass" says that "we" often saw Mrs. Snopes working in her husband's restaurant, he later suggests that most of the customers there were men from the surrounding countryside. Major Hoxey eats there, but he looks out of place "among the collarless shirts and the overalls and the grave, country-eating faces" of the other diners (151).
In "Skirmish at Sartoris" and again in The Unvanquished the "scrip dollar" that replaces Confederate money in Jefferson is "drawn on the United States Resident Treasurer, Yoknapatawpha County" (66, 199). All we see of this functionary in the story is his "neat clerk's hand[writing]" (66, 199), but presumably he is one of the Northerners working in the defeated South for one of the Reconstruction agencies.
In "Raid" and again in The Unvanquished there is a large group of Negroes who sought freedom with the Union army but who are turned over to Rosa Millard because of a clerical error. They are part of a much larger group of self-emancipated slaves, to Bayard it "looks like a thousand" (52, 110), who are waiting beside the pile of confiscated chests and the pen full of confiscated mules when Rosa Millard presents the faulty requisition order that calls for "110 Negroes of both sexes" to be "repossessed" to her (54, 112).
This white railroad employee's haste in getting off the train that carries Bryon Snopes' children to Jefferson in The Town is an early sign of trouble - a red flag of a different kind.
In Flags in the Dust this is the railroad employee who, once a week, delivers Belle's shrimp to Horace from "the door of the express car" (374-75). He assumes Horace must be using it for bait.
The Reivers refers to other prostitutes at Miss Reba's, besides Corrie and the two "ladies" whom Lucius meets at supper (106). Lucius can hear them meeting customers in the parlor on Saturday night. When the adult Lucius who is telling the story calls them "ladies" and "nymphs" (130), he is being pleasantly (rather than judgmentally) ironic.