The Lego City theme traces its origins to Lego Town, a theme introduced with the first
minifigures in 1978, when a completely new range of buildings and vehicles were introduced for the European markets, although Lego sets with city buildings and vehicles had been commonplace since the late 1960s. Prior to 1978, Legoland-branded sets were focused mainly around buildings and vehicles which were intended to function more as static models. In 1975, a precursor to the minifigure was introduced, in the same scale but without moving parts. These "stiffs" (as they are nicknamed by Lego enthusiasts) were still unable to ride the vehicles. This was changed with the new minifigures – in 1978 in Europe and 1979 in North America the first vehicles that were minifigure compatible were also released, although some smaller sets still combined the minifigure with model vehicles. In 1980, the
Trains theme was completely revamped to complement the Town sets. By 1983, the remaining vehicle based sets that were not minifigure compatible had been discontinued. All sets were originally released under the "LEGOLAND" label until it was discontinued and replaced with "Lego System" branding in 1991. Eventually, different sub-themes under the "Town" brand were used to tie together related sets, such as police, coast guard, emergency services, airport, road rescue, trains, fire, and harbor. In 1999 Lego Town was replaced by City which was known as Lego City Center in The United States. The theme was discontinued in 2002, and replaced by Lego World City in 2003. During the Christmas season, a City-themed
advent calendar set is sold through the online Lego Shop and at retailers. On 22 June 2019,
Lego City Adventures aired on
Nickelodeon during a Saturday morning lineup along with
SpongeBob SquarePants. From 2020 on, the annual City Advent Calendars would be based on the show specifically, rather than Lego City in general. In June 2020, following the
murder of George Floyd by police, Lego made an announcement that they would temporarily stop marketing police-related Lego City sets. Due to misinformation claiming that they removed these sets from being sold that led to backlash, Lego issued a follow-up statement emphasizing that the sets were still for sale and that digital advertising for the sets would just be temporarily halted. In January 2021, Lego released a new plate-based road system for the City theme that differed from its predecessor, which used baseplates whose height equaled one-half of plate. However, this system was criticized by some members of the Lego community due to its alleged incompatibility with the former baseplates, which had been gradually reduced in usage and limited to sets such as
Lego Modular Buildings, and are less cost-effective. ==Sub-themes==