. Redwood City is located at (37.482887, -122.236006). According to the United States Census Bureau, the city has a total area of 89.5 km sq (34.6 square miles). 50.5 km sq (19.5 mi sq) of it is land and 39.1 km sq (15.1 mi sq) of it (43.66%) is water. Redwood City's sphere of influence includes the districts of Emerald Lake Hills, CaliforniaEmerald Lake Hills and North Fair Oaks, CaliforniaNorth Fair Oaks, which however are largely outside the city boundaries and are counted individually for the U.S. census. The neighborhood of Redwood Shores ''is'' part of Redwood City, although it is not possible to travel by road from one to the other without passing through the neighboring city of San Carlos, CaliforniaSan Carlos. Although Redwood City is mainly upper middle-class, the eastern section of Redwood City highly resembles East Palo Alto in demographic make-up and income level. El Camino Real (California), a northwest/southeast arterial street and ''Woodside Road'', a north-northeast/south-southwest arterial, run through Redwood City. Locally, the former is regarded as north/south and the latter east/west, as El Camino connects Redwood City to San Francisco and San Jose, CaliforniaSan Jose and Woodside Road runs from San Francisco Bay to the Santa Cruz Mountains. The actual geography is as stated. Source: http://en.wikipedia.org/wiki/Redwood_City%2C_California