Dunwoody is centered at (33.942751, -84.317694). According to the United States Census Bureau, the CDP has a total area of 31.4 km sq (12.1 square miles). 31.3 km sq (12.1 mi sq) of it is land and 0.1 km sq (0.04 mi sq) of it (0.33%) is water. Dunwoody is generally considered to be the northern tip of the county, bounded by the Fulton County line on the north and west, I-285 on the south, Peachtree Industrial Boulevard on the southeast, and Gwinnett County on the northeast. Officially, the CDP extends only to the county line in the north; however, some residents consider the panhandle of Sandy Springs as part of the community. Perimeter Mall and most of the Perimeter Center area of shopping and office buildings (including several high-rises) are both located here. The western part of Perimeter Center area spans the Fulton county line into Sandy Springs. Elsewhere is the well-known Dunwoody Country Club. The tallest building in Dunwoody is the 34-story, 444-foot Ravinia 3. Perimeter Center is served by the Dunwoody (MARTA station)Dunwoody train station on MARTA's north line. Source: http://en.wikipedia.org/wiki/Dunwoody%2C_Georgia