Searching for an apartment near San Mateo, CA? Welcome to Edgewater Isle, a densely populated neighborhood near San Mateo, CA. Only 45% of households have children, so it's a great place for those looking for a calm neighborhood. Residents are well-educated, with many having professional degrees. Residents of Edgewater Isle may prefer to have a car, since 77% of residents use their vehicles to get around. Getting to and from work takes about 25 minutes on average.