I use MySql to store different google map markers for different cities.

My question is:

Would it be faster if I created different tables for each cities and store the latitude, longitude there. OR would I be fine with creating a single table to store all the markers there, add a city value column and retrieve them by the city name on my website.

If I create a single table I could end up with 300.000+ rows, on the other hand if I create different tables for each cities, I could end up with 500+ tables...

My immediate thought of process would think multiple tables with less rows would be faster, but it will be a huge mess.

Thank you.