An account targeting Missouri quietly turns off half the metro
Geographic settings written at the state level either drop the Metro East entirely or buy it by accident, and both happen constantly.
The Illinois side of the river is part of this market. Belleville and Edwardsville sit in St. Clair County and Madison County, an easy drive from downtown, and occupiers there are shopping the same corridors your brokers work. A Missouri only setting hides all of it.
The reverse error is broader. Targeting the whole metro area as one blob mixes the City of St. Louis, St. Louis County, St. Charles County and two Illinois counties into a single auction, then reports one blended cost per lead that tells you nothing about any of them.
Build geography around where the building is, and set the targeting option that includes people searching about the area rather than only people standing in it. A corporate real estate director in another state can be your best searcher, and presence based targeting removes him.
Then separate the reporting even where you keep budgets combined. Municipality level campaigns are often too thin to fund individually, but geographic reporting costs nothing and shows you which places are actually producing conversations.