Ipswich – Boonah Road (State Route 93) runs through from north-west to south-west. Beaudesert–Boonah Road (State Route 90) runs east from an intersection with this road, exiting to the north-east.[3]
At the 2011 census, Roadvale and the surrounding area had a population of 254.[10]
In the 2016 census, Coulson had a population of 195 people. The locality contained 71 households, in which 51.3% of the population were males and 48.7% of the population were females, with a median age of 43, 5 years above the national average. The average weekly household income was $1,531, $93 above the national average. 1.5% of Coulson's population were either of Aborigional or Torres Strait Islander descent. 67.1% of the population aged 15 or over were either registered or de facto married, while 32.9% of the population were not married. 33.0% of the population were currently attending some form of a compulsory education. The most common nominated ancestries were Australian (33.5%), English (31.5%) and German (12.7%), while the most common country of birth was Australia (92.4%), and the most commonly spoken language at home was English (94.3%). The most common nominated religions were Anglican (22.6%), Anglican (15.3%) and the Uniting Church (14.4%). The most common occupation was a technician/trades worker (22.7%) and the majority/plurality of residents worked 40 or more hours per week (54.0%).[11]
In the 2021 census, Coulson had a population of 168 people.[1]
Education
There are no schools in Coulson. The nearest government primary schools are Roadvale State School in neighbouring Roadvale to the north-west and Boonah State School in neighbouring Boonah to the south-west. The nearest government secondary school is Boonah State High School, also in Boonah.[9]