Allenwood is located about 47.3 km (29.4 mi) from Dublin and halfway between Rathangan and Clane in north County Kildare.

[1] The main road through Allenwood is the R403 and the village is within 20 km (12 mi) of both the M4 (to the north) and M7 (to the south) motorways.

Businesses in the area are centred on the crossroads, and consist of several shops, including a Spar, a costcutter, a barbers and a public house.

[citation needed] Allenwood is the location of a former electricity power station which was fueled by peat from the surrounding bog lands.

[7] Bord na Móna which processed peat on the local boglands, established a camp for its workers at Allenwood Cross and the Roadstone quarry in Allen is also nearby.

[8] Allenwood has undergone expansion in the early 21st century, with a four-fold population increase (from 481 to 1,685 inhabitants) between the 2002 and 2022 censuses.