BOISE, Idaho -- Rick and Noreen Capp recently reduced their credit-card debt, opened a savings account and stopped taking their two children to restaurants. Jessica and Alan Muir have started buying children's clothes at steep markdowns, splitting bulk-food purchases with other families and gathering their firewood instead of buying it for $200 a cord.

As layoffs and store closures grip Boise, these two local families hope their newfound frugality will see them through the economic downturn. But this same thriftiness, embraced...