Perimeter Mall and approximately 40 percent of the Perimeter Community Improvement District
, is a self-taxing district of shopping and office buildings (including several high-rises), are both located in Dunwoody. The western part of the Perimeter Center edge city spans the Fulton county line into Sandy Springs. (The two sides of the PCID are legally separate, but work as one organization.) The tallest building in Dunwoody is the 34-story Ravinia 3, at .
Perimeter Center is served by the Dunwoody train station on MARTA's north line, while the other two stations in the area are both on the Fulton side.
In 1998, a major tornado tore through parts of Dunwoody, running east-northeast from Perimeter Center and into Gwinnett. Thousands of homes were damaged, hundreds seriously, and several dozen were condemned. In addition, tens of thousands of native forest trees were downed. The vast majority of the tornado's damage occurred here, leading it to be called the "Dunwoody tornado", the most vivid in local memory until the 2008 Atlanta tornado.
There were 13,746 households out of which 25.0% had children under the age of 18 living with them, 57.8% were married couples living together, 5.4% had a female householder with no husband present, and 34.7% were non-families. 26.7% of all households were made up of individuals and 5.8% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.86.
In the CDP the population was spread out with 19.6% under the age of 18, 6.8% from 18 to 24, 33.9% from 25 to 44, 27.0% from 45 to 64, and 12.5% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 95.2 males. For every 100 females age 18 and over, there were 93.0 males.
The median income for a household in the CDP was $82,838, and the median income for a family was $100,796. Males had a median income of $70,460 versus $42,813 for females. The per capita income for the CDP was $43,523. About 1.5% of families and 3.6% of the population were below the poverty line, including 2.4% of those under age 18 and 5.2% of those age 65 or over.

The bill for incorporation was withdrawn from the Georgia General Assembly in 2006 for further study, but was presented again in early 2007, where it passed only the lower house. In 2008, the bill of incorporation was re-introduced by Senator Weber, and due to increased pressure, passed in the senate as well as the house. Georgia Governor Sonny Perdue signed the bill allowing the residents to vote for a city of Dunwoody on March 25, with a referendum set for July 15.
Nearby Tucker is also considering incorporation, as are other cities in DeKalb and Fulton counties. The Georgia Township Act was intended to create villages called "townships", with control over zoning and land use; however Dunwoody continued pushing for full cityhood, and as of 2008 session's end the state legislature has failed to pass the township bill.