List of streetcar systems in the United States
This is an all-time list of streetcar (tram), interurban and light rail systems in the United States, by principal city (or cities) served, and separated by political division, with opening and closing dates. It includes all such systems, past and present; cities with currently operating systems, and those systems themselves, are indicated in bold and blue background colored rows. It is one in a group of lists that collectively cover all countries of the world; the other lists are indexed at List of town tramway systems. This is not a list  of streetcar operating companies. It is a list of U.S. cities that were the focus or base of a streetcar system at one time, with starting and ending dates for each general type of streetcar service (e.g. horsecar, electric streetcar) in each city or metropolitan area. "System", as used in the article title, refers collectively to all streetcar infrastructure and rolling stock in a given metropolitan area, used by any of several different operating companies over many years, often passing from one operating company to the next. The "Name of system" column is intended to distinguish the few cases where  two distinctly different systems were in operation in one city at the same time, but is also used to identify operators that have a Wikipedia article. In many U.S. cities, the streetcar system was operated by a succession of different private companies during the years in which the system existed. The use of the diamond (♦) symbol indicates where there were (or are) two or more independent streetcar (or light rail) systems operating concurrently within a single metropolitan area. Usually, this refers either to interurban lines connecting the area's principal city with other cities or to cases where separate  cities within one metropolitan area were served by independently operated streetcar systems. Unless otherwise noted in the "Type" column, all systems listed were/are conventional streetcar (tram) systems (although some past systems might have been termed "light rail" if that 1970s-introduced term had existed at the time they were in operation). Interurban and light rail systems are noted in that column for convenience. For lists of existing systems only, see the following: Colorado. Peschkes (Part Four, 1998, Page 59) states that, despite various evidence, the following town did not have a tramway: Georgia. Peschkes (Part Four, 1998, Page 44 ) states that, despite the assumption of another historian, there is no evidence for tramways in the following towns: