Very interesting! My grandfather had a store in San Pedro, and I always heard it pronounced the way you describe. I live in the Bay Area but have never heard of

Very interesting! My grandfather had a store in San Pedro, and I always heard it pronounced the way you describe. I live in the Bay Area but have never heard of San Pedro Square. I wonder if it's pronounced more authentically because of (1) the time period in which it was built/popularized, or (2) the local population. I assume that geographic areas named these days are somewhat more likely to be pronounced authentically (at least Spanish-language ones, in areas like CA that now have large Spanish-speaking populations). Also, from a look at Google Maps, it appears there are a lot of Spanish-language businesses in the area. If the area is largely Spanish-speaking, there's a much better chance it would be pronounced authentically.