- Maitland Avenue to the west.
- Carling Avenue and the Queensway to the north.
- Fisher Avenue to the east.
- Central Experimental Farm to the south.
Carlington contains less than 435 older pre-1945 homes, primarily along Fisher Avenue. Some 2000 dwellings were built from 1945 to 1960 . The houses built in the time period immediately following World War II were meant for returning veterans and are therefore known as "war homes" or "veteran homes". Many of the streets in the neighbourhood also reflect this military heritage (eg. Viscount Avenue, Admiral Avenue). From 1961 to 1970, 1440 homes and apartments were built and from 1971 to 1980, another 1380. After 1981, the construction of new dwellings sharply drops down to less than 400 for the remainder of the 20th century .
A notable geographic feature in the neighbourhood is Carlington Hill, a large hill with long gradual slopes. Part of it was formerly a ski hill with tow lift (known as Anne Heggtveit Hill), but now used as a City of Ottawa approved sledding hill . The western part of the hill was quarried for limestone, which was crushed and used as lime for the production of cement . The former quarry is now used as a city snow dump.