If your business is in Warren, Ohio, there is a good chance Google is quietly filing you under the wrong part of the state.
Ohio has a city of Warren in Trumbull County, up near Youngstown, and a Warren County down by Cincinnati with about ten times the population. Unanchored, the phrase "Warren, Ohio" resolves toward the southern one. Fix it by naming Trumbull County and neighbouring towns on the page, not by repeating "Warren" more often.
Why this happens
Search engines disambiguate place names by looking at what sits around them. A page that says "Warren, Ohio" fourteen times and nothing else gives them nothing to work with, so they fall back on the more prominent entity. Warren County is a populous suburban county in the Cincinnati metro. The city of Warren is a mid-size city 200 miles northeast of it. Population wins the tiebreak.
The result is not usually a dramatic failure. It is worse than that: it is quiet. Your page ranks, just for people 200 miles away who will never call you, and the local searches you actually want go to someone whose page made the county obvious.
What actually fixes it
Name the county in body copy, not just in schema
"Warren, Ohio" becomes "Warren, in Trumbull County." Once near the top, once more naturally further down. Structured data helps, but the visible text is what the page is judged on.
Name the neighbours
Niles, Cortland, Howland, Liberty, Hubbard, Girard. None of those exist near Cincinnati. A page listing them cannot be confused for a southern Ohio page.
Use the regional name people here actually use
"The Mahoning Valley" is unambiguous. Nobody in Warren County has ever called their area that.
Anchor to a road or a landmark
Route 422, the Mahoning River, downtown Courthouse Square. Geography that only exists in one of the two places.
Repeating "Warren, Ohio" more often makes this worse, not better. You are adding volume to an ambiguous signal instead of resolving the ambiguity. One clear county reference beats twenty city mentions.
It matters more now, not less
When someone asks an AI assistant for a plumber in Warren, the assistant is doing the same disambiguation, from the same text, with less patience for a close call. A page that never says which Warren it means is a page the assistant will either skip or get wrong.
This is a fifteen minute fix on most sites, and almost nobody in this area has done it.