We use the prepositions On/In/At with the verb “to locate” depending on the place that we are talking about.
To learn more about prepositions of place, you can read my complete guide here.
We use the verb “to locate” when we are trying to find something.
We use the preposition “in” with volumes. Think about the borders of a country or any place or thing.
We are located in Russia.
The car is located in the car park.
We use “on” with the verb “to locate” when we are talking about surfaces.
Your apartment is located on the fourth floor.
“Located at” is not very common because we usually use the verb “to locate” with things that are fixed and the preposition “at” is usually used for temporary things
Located in/on/at + street
We use “located on” with the noun “street”.
My house is located on fourth street.
Located in/on/at + map
We use “located on” with the noun “map”.
You can see the country Ghana located on Google Maps.