Knuckleduster Publications produces their own line of western civilian miniatures, including Beer Drinkers and Hell-Raisers, pool players, incapacitated gunfighters, and a “sharp dressed band” (you’ll understand when you see them). Forrest also sells Foundry gunfighters, all minis available painted or not (subject to availability, as they say in small print). Recent releases in Wild Bill Hickok and a feller wielding a LeMat.
The Foundry features a line of their exquisite figures, including various western personalities, plains wars, and townsfolk. One might peruse the Victorian figures as well for further personalities.
Firing Line/Bicorne Miniatures has a line comprising four figures, with separate heads for customization.
EM-4 Miniatures has a small (but growing) line of prepainted Old West Heroes.
Dixon Miniatures has an impressive range of western figures, including a number of civilian figures.
Blue Moon Manufacturing has a line of all the usual suspects in their Slice of Americana – The Wild West line.