标准号:ANSI X3.31-1988(R1994)
中文标准名称:信息交换用美国各县、县级区和外围地区的标识结构
英文标准名称:Information Systems - Codes - Structure for the Identification of the Counties and County Equivalents of the United States and Its Outlying and Associated Areas for Information Interchange FIPS PUB 55-3-1994