Abstract
This article examines the geographic integration of U.S. labor markets from 1870 to 1898, using previously unexploited wage and price data for 23 occupations in 12 major cities. In contrast to the increasing nationalization found in other markets at that time, the labor market was characterized by large and persistent real wage differentials both within and between regions, leaving little doubt that late nineteenth-century labor markets remained far from completely integrated. The differentials, however, owed as much to substantial variations in labor demand growth as to the lack of labor market integration.