Probably on a straight line between where it comes in and the road. But there might not be anything at the surface. A friend of mine had to get the city to come fix his line due to a break on their side, and they had to go down probably five feet before they found it. But that was in New Hampshire, because they have to have it deep enough that it won’t freeze. If you don’t have freezes, yours might be different.
I’m in the Pacific Northwest at about a thousand feet elevation so the ground does freeze here. I have an idea where it comes into the crawl so maybe outside that area?
This. My house is a 1957 with the original box, was a pain in the ass to find. It took me like an hour of searching to find it. I mow over it without seeing it. Virtually impossible to see.
Get a poker, find the street valve and where the plumbing enters your house and poke between the two spots until you find it. Alternatively you could pull your plans from the city.