Dunwoody is a census-designated place in northern DeKalb County, Georgia. As of the 2000 census, the CDP had a total population of 32,808. The community was named for Major Charles Dunwoody. Dunwoody is one of the wealthiest and most prestigious areas within metro Atlanta, with many elegant homes, highly-ranked schools, and abundant shopping and entertainment.

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.

Perimeter Center is served by the Dunwoody train station on MARTA's north line.

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