Most cities are named by geographical location, a geographical feature, or named after the person who lived there. For example, "Round Beach", "Little Hill", "Atwater", or "Boulder" are all names of geographical features. "Bakersfield" was named after pioneer woman Mrs. Baker, "Jamestown" was named after someone named James who founded the town, or "Stittville" named after the first settlers, a family named Stitt. Some names are about the feature or function of the town, so "Milltown", "Coalinga" (Coaling Station "A" on the train track), and "Sutter's Fort" are all names of the function of the town's location. Some names are created to invoke a creative sense of beauty, so the brand-new houses being built will be called something like "Tuscany Hills", "Orchard Grove", or "Diamond Acres" to evoke a pleasant vision of living there. Some are named after famous people, such as "Georgetown" after George Washington or "San Francisco" after St. Francis of Assisi. Sometimes creating a backstory helps name the town. I am fascinated by town names like "Buttonwillow" and "Gray's Mountain" and would love to know the backstories! A good way to make up a town name is to think about the location where the action takes place and make the town name part of the lore that feeds the character's impulses as part of the story. Or look up campground names and use those as a source for names. Again, "Gray's Mountain" about a man named Gray who was the first settler there who used to set traps all over the mountain before more people moved in, and had a cabin at the meadow near the creek. Or go a bit sideways, instead of San Diego, they named a town nearby San Marcos, a lesser-known saint. It still is a California town, just no mission was built there. Yet it evokes the sense and feel of a California mission town. Try "Hartfield" (a field of deer), ""Magpie Road" (an area where magpie birds frequent), or "Deer Hollow". Big cities in California also have names that have deep meaning to the settlers of the town, such as "Our Lady of the River of Mercy" (Merced, California), "Butterfly" (Mariposa, California, after all of the butterflies found in that geographical location), Or "La Ciudad de la Nuestra Senora la Reina de Los Angeles" ("The City of Our Lady, the Queen of the Angels", or Los Angeles California). So think about the geographical feature, or the backstory of a main character and their family name and the possibility of them being a descendant of the founder of the city, or the city's original purpose or function. and go from there. Good luck!