Boulder Colorado has many single family home residential subdivisions.  In some instances you will find an entrance monument erected next to the road announcing the name of the subdivision community you are entering.  In other instances, it is simply a legal name recorded at city hall when the real estate was first developed.  With a city as old as Boulder CO, subdivision naming did not exist when houses were first built at the turn-of-the-century.  These old areas of Boulder have been given a subdivision name -- Boulder OT ("Old Town").  To learn more about a particular residential community, click on the subdivision name below.