Urban Influence Codes

The 2013 Urban Influence Codes form a classification scheme that distinguishes metropolitan counties by population size of their metro area, and nonmetropolitan counties by size of the largest city or town and proximity to metro and micropolitan areas. The standard Office of Management and Budget (OMB) metro and nonmetro categories have been subdivided into two metro and 10 nonmetro categories, resulting in a 12-part county classification. This scheme was originally developed in 1993. This scheme allows researchers to break county data into finer residential groups, beyond metro and nonmetro, particularly for the analysis of trends in nonmetro areas that are related to population density and metro influence.

An update of the Urban Influence Codes is planned for mid-2023.This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: Webpage with links to Excel files For complete information, please visit https://data.gov.

2013年城市影响力编码构成一种分类体系，该体系通过其都市区的人口规模来区分大都市县，并通过最大城市或城镇的规模及其与都市区和微都市区的邻近程度来区分非都市县。标准的管理与预算办公室（OMB）都市和非都市类别已被细分为两个都市类别和十个非都市类别，从而形成了十二个部分县分类。该体系最初于1993年开发。此方案允许研究人员将县数据细分为更精细的住宅群体，超越了都市和非都市的界限，特别是对于分析与非都市地区相关的人口密度和都市影响力的趋势。计划于2023年中期更新城市影响力编码。此记录来自美国农业部企业数据清单，该清单输入到https://data.gov目录。此记录的数据包括以下资源：包含链接到Excel文件的网页。欲获取完整信息，请访问https://data.gov。