This paper develops a spatial equilibrium model with skill heterogeneity and agglomeration forces that stem from local idea exchange. I structurally estimate the model using American census data to study policy effects on real wage inequality between and within college and noncollege workers. Using the estimated model, I find: (1) Skill composition and local spillovers, respectively, account for 30% and 70% of the city-level relationship between productivity and employment. (2) Recent skill-biased technological changes largely increased the welfare inequality between groups and within college workers. (3) Small transfers from larger to smaller cities may reduce inequality without changing aggregate welfare.

中文翻译：

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空间经济中的技能，集聚和不平等

本文建立了一个空间均衡模型，该模型具有技能异质性和来自本地思想交流的集聚力。我使用美国人口普查数据从结构上评估该模型，以研究政策对大学和非大学员工之间以及内部的实际工资不平等的影响。使用估计的模型，我发现：（1）技能构成和本地溢出分别分别占生产率和就业之间城市级关系的30％和70％。（2）最近因技术而偏见的技术变革在很大程度上加剧了群体之间以及大学员工内部的福利不平等。（3）从大城市向小城市的小额转移可能会减少不平等现象，而不改变总福利。