Fassifern Butter Factory owned by Mr. S. Dover was operating in Church Street. On 5 July 1916 a larger state-of-the-art factory with a separate office building, known as the Boonah Butter Factory was officially opened on a new site on the northern entry to the town by the Queensland Governor Hamilton Goold-Adams. The Boonah Butter Factory closed on 1 March 1974 due to declining production as a result of low prices for milk and shifting agricultural practices in the region. Miss Esme Clarke's Private School opened on 1905 in a room was rented from All Saints Church. It closed on 1910. In April 1905, John Carl Streiner opened his Commercial Hotel on the north-west corner of High Street and Park Street. It was a two-storey building with filigree lace balustrading on the upper verandah. Streiner had formerly operated the Royal Exchange Hotel (previously known as the Dugandan Hotel, not to be confused with the current hotel of that name in Dugandan). Carl Behncken leased and operated the new hotel. The Goolman Shire War Memorial was unveiled in Boonah (then part of the Goolman Shire) on 19 May 1920 by General Birdwood and Councillor Alexander John Tait McKay. It is generally known as the Boonah War Memorial. Initially only a primary school, Boonah State School had a secondary class added in February 1955, which it retained until 25 January 1965 when Boonah State High School opened. All Saints' Catholic Primary School was constructed in 1956 using volunteer labour. It was officially opened on 4 November 1956 by Archbishop James Duhig. It was operated by the Sisters of Mercy until 1989 when it passed to the lay leadership of principal Kathleen Lambourne. Boonah was the centre of the Shire of Boonah local government area until council amalgamations occurred in 2008. In the , the locality of Boonah had a population of 2,484 people. The locality contains 1,206 households, in which 47.2% of the population are males and 52.8% of the population are females with a median age of 46, 8 years above the national average. The average weekly household income is $950, $488 below the national average. 2.1% of Boonah's population is either of Aboriginal or Torres Strait Islander descent. 59.7% of the population aged 15 or over is either registered or de facto married, while 40.3% of the population is not married. 25.4% of the population is currently attending some form