Data Entry Uploading Pages To Wordpress

I have a website with Divi Theme. I have created a service website that includes all 50 states with some selected cities. It averages 15 cities to a state. Some have 20 and some have 5. What you will be doing is going to each city page and uploading the Json file which is the ready made template that is a web page. Once the page is loaded you will replace the word (City) with the actual name of the city you are working on. There is some in the h1, h2, h3 titles and about 5 in the content. Once you replace the word (city) with the actual name of the city you will save the webpage and move on to the next city using the same json file until all cities are complete. Knowing How Divi theme and wordpress works is a plus with above average typing skills.