ZIP Code 51111

ZIP code 51111 sits in Sioux City, where per-capita income reaches $29,128 — a figure that places the area squarely in working- to middle-class territory rather than among affluent communities. County-level property taxes run 1.45%, so a home's assessed value carries a meaningful annual levy that eats into household earnings. Add a combined sales tax of 7.00%, and everyday purchases also contribute to the local tax base. Together these rates mean residents here devote a noticeable share of income to taxes, a pattern consistent with a workforce-oriented economy where wages are steady but not high.