The major difference would be that a county is way bigger than a city, because cities are located inside counties.
differences between city and country
I live in Utah and I have found there is no difference
Miami is a city Miami-Dade is a county
"Leicestershire" is the name given to a county in eastern England. "Leicester" is a city in eastern England and the main city in the county of Leicestershire. It is similar to the city of "Nottingham" being situated in, and the main city in the county of, "Nottinghamshire" A "Shire" is one word for an English county.
national = the whole country local = county or city/town
Cork city in county Cork. Limerick city in county Limerick. Waterford city in county Waterford.
There is a town in the county of Devon in southwest England by the name of Kingsbridge but it isn't a city. In the UK, there is a subtle difference between a town and a city.
Scott MO (major city Scott City)
A County is a smaller division of a state but usually larger than a city, also may also be called a parish or a borough.A Country is a nation.a country is made up of loads of county's
County/St: Delaware, PA Major City: Springfield
Cork is the only city in the county of Cork. There are many large towns, but only one city.
a city state does not have an emperor the difference between a city-state and an empire is that a city-state does not have an emperor