Avondale is a census-designated place (CDP) and post office in and governed by Pueblo County, Colorado, United States. The CDP is a part of the Pueblo, CO Metropolitan Statistical Area. The Avondale post office has the ZIP Code 81022. At the United States Census 2020, the population of the Avondale CDP was 594, while the population of the 81022 ZIP Code Tabulation Area was 1,624 including adjacent areas. History The Avondale post office has been in operation since 1892. The name Avondale is derived from Stratford-upon-Avon. Geography The Avondale CDP has an area of , all land. Demographics The United States Census Bureau initially defined the for the See also List of census-designated places in Colorado References External links Avondale @ UncoverColorado.com Pueblo County website Census-designated places in Pueblo County, Colorado Census-designated places in Colorado Colorado populated places on the Arkansas River