How do you write city state and country in a sentence?

The standard error made while writing the city state and the country is forgetting to add commas. Whenever you write it together as an address,

Always make sure first to write the city

Add a comma 

Add the state 

Add a comma 

And finally, mention the country in the end

A comma (,) will help form a correct sentence with a gentle pause between them. Adding a comma to the place name, even if the state or country’s name is abbreviated, is essential. Whenever you write them together, make sure to mention the village, town, or city’s name first, then the state’s, and finally, add the country’s name. If you live in an autonomous and independent city (city-state such as Singapore), you can quickly just mention the city’s name first, add a comma, and mention the country’s name. Here are a few examples of how to write it together in a sentence,

I live in Los Angeles, California, the United States.

I live in Los Angeles, CA, the US. 

I reside in Miami, Florida, the U.S. 

I come from Manchester, England, United Kingdom.

John is from Manchester, UK.  

If you write the place names at different positions, you may not require to add any commas. But, keep in mind to always add a comma whenever you write all three or either two of the place names together. Suppose you need to mention multiple cities within a sentence; you can mention all the cities one after the other with a comma after each city and add a semicolon to enhance the readability further while mentioning the country or countries. A semicolon (;) is a combination of a full stop and a comma. It combines the two of them, to help speak; it helps make a pause and connect the interdependent clauses. 

Errors to avoid while writing place names

Avoid omitting any commas, even if you write just the city and state. According to the grammatical rules it is not the right way to writing the city and state together as a sentence without conjunction errors. 

For Example:

Check out this map of Miami, Florida. 

Jane is from London, UK.

Avoid omitting commas between a city and a country. You cannot grammatically write it correctly without adding a comma between them.  

For Example:

Emily is from Lille, France. 

George came yesterday from Chicago, the US. 

Why is a comma necessary in place names?

Adding a comma in between the sentence, especially if you mention a geographical element of more than one, enhances the readability. It allows the reader to clearly understand the context and figure out the accurate address written. When you write the place names without adding a comma, like, “She came from Miami, Florida, The United States,” it creates confusion. It disables the writer from understanding the actual address mentioned. The grammatical rule is to add commas to different parts of the address in between sentences without breaking the sentence. A comma adjoins a different address into one for a better and clear understanding of the viewer or a reader. 

Avoid monotony in writing 

Always avoid monotony when you write a huge sentence. It gets easier when you add complexity to it with the use of punctuation, which embraces the class and style of the writing. Use the punctuation correctly and avoid using it at random places to combine a sentence. Whenever you write a huge sentence involving an address, try adding punctuation. 

For Example:

Jennifer felt exhausted for over weeks due to work. On a Friday night, she packed her bags for a short summer trip with her best friend. It was in LA, California. She enjoyed going to the beach; it was breezy and humid in the evening. 

Conclusion

These are some of the essential grammatical writing errors that need the utmost attention. Be it school, university, a letter to a friend, or mentioning an address in a sentence to the delivery boy; it is crucial to use the right punctuation in the right places. When you write an address that includes a city, state, and country, always remember that without commas in between, the mentioned address is of no use.