Which city has a commercial zone that extends the farthest beyond city limits?

St. Louis has a commercial zone that extends the farthest beyond its city limits due to several factors that contribute to its status as a major commercial and economic hub. The city's historical development, along with its strategic location as a transportation nexus, has enabled significant growth in its commercial zone.

The presence of major highways, railroads, and the Mississippi River facilitates easy access for businesses and logistics, allowing for the expansion of commercial activities beyond the city's borders. Additionally, St. Louis has a diverse economy that includes sectors like healthcare, biotechnology, manufacturing, and education, all of which contribute to its extensive commercial reach. This commercial expansion typically leads to jobs and services that benefit surrounding areas, creating a zone that often stretches well beyond the city limits.

In contrast, other cities mentioned, like Columbia, Springfield, and Kansas City, while having commercial zones, do not have the same level of extensive reach or economic drivers that significantly contribute to a larger commercial zone compared to St. Louis.