The diverse styles of Rock Island’s historic residential architecture span the time period from just after early settlement in the 1850s to the post-World War II subdivisions of the 1950s. Rock Island’s houses also reflected economic status of the citizens. While Rock Island had some share of lumber and brewery barons, the community was predominantly middle and working class. Many national architectural styles are represented by a mere handful of examples, and these frequently are religious or public buildings and not residences. Many homes illustrate just hints of certain architectural styles or types, while others are purely vernacular.