Green’s Dictionary of Slang

peckerwood n.

also pecker
[the red woodpecker, symbol of whites, rather than the black crow, symbol of blacks]

[late 19C+] (orig. US black) a white person, usu. a working-class Southerner; also ext. to Chicanos and Latinos; also attrib.

In compounds

Peckerwood Town (n.)

[1950s] (US black) the area inhabited by poor white people.