Winston is an unincorporated network, formerly integrated as a city, in southwestern Douglas County, Georgia, United States. Winston is assigned to the United States Postal Service ZIP code 30187. ZIP Code 30187 has segments in two counties, Carroll and Douglas.bThe network was named after «Uncle Jackie» Winn, a pioneer citizen. The Georgia General Assembly integrated Winston as a metropolis in 1906. The town’s municipal charter became repealed in 1995.