Economic geography data are typically reported using political units, such as counties, which often do not match economic units. Commuting zones (CZs) group counties into labor markets. However, CZs are not the most appropriate grouping for other economic activities. We introduce consumption zones (ConZs), groupings of counties appropriate for the analysis of consumption. We apply CZ methodology to payment card data, which report spending flows across US counties for fifteen industries. We find that different industries have different market sizes. Grocery stores have more than five times the number of ConZs as entertainment. We apply ConZs to measuring industry concentration.

中文翻译：

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 消费区


经济地理数据通常使用政治单位（例如县）进行报告，这些单位通常与经济单位不匹配。通勤区 （CZ） 将县分组到劳动力市场。然而，CZ 并不是最适合其他经济活动的分组。我们介绍了消费区 （ConZs），即适合于消费分析的县组。我们将 CZ 方法应用于支付卡数据，这些数据报告了美国 15 个行业各县的支出流向。我们发现，不同的行业有不同的市场规模。杂货店的 ConZ 数量是其五倍多。我们将 ConZ 应用于测量行业集中度。