Dataset for small cities

This dataset comprises single-county urbanized areas from the U.S. Census Bureau for the decades 1970-2010. It also contains agricultural land values from the U.S. Department of Agriculture. We used this data to test the hypothesis that small cities are affected differently than large cities by the factors identified by the Mills-Muth model as explaining city size. This dataset includes: urbanized area name, land area, population, median household income, agricultural land values, the percent of commuters using public transit, the percent of households with at least one vehicle available, and the year.
1970 data is from the 1972 county and city data book. 1980, 1990, and 2000 data is from the Decennial Censuses. 2010 data is from the American Community Survey 5-year estimates.

本数据集由美国人口普查局在1970年至2010年间的单县城市化区域数据构成。同时，亦收录了美国农业部提供的农业用地价值信息。本数据集旨在验证以下假设：小城市相较于大城市，在受到Mills-Muth模型所识别的用以解释城市规模的因素影响时，其影响效果存在差异。数据集包含以下内容：城市化区域名称、土地面积、人口、家庭收入中位数、农业用地价值、使用公共交通通勤者的百分比、至少拥有一辆可用车辆的家庭百分比，以及年份信息。1970年的数据来源于1972年的县与城市数据手册，1980年、1990年和2000年的数据来源于十年人口普查，而2010年的数据则来源于美国社区调查的五年估计值。