The Toowoomba Second Range Crossing will join the Warrego Highway at Helidon and is expected to open in 2018. Parts of the hilly, undeveloped north of Helidon have been protected within Lockyer National Park.
History
The Helidon district is called by Aboriginal inhabitants "Yabarba", the name of the Curriejung, and the nearby spring is known as "Woonar-rajimmi", the place "where the clouds fell down!" The name Helidon derives from a pastoral run name established in 1841 by Richard Jones, a merchant and pastoralist. William Turner paid 60 pounds rent for the Hellidon Run of 25,600 acres, in 1853. He was later, appointed magistrate for the district. Richard Kettle, together with his family, were amongst the principle farming families to establish Helidon. Following a failed attempt to lease land in Tent Hill in 1871, Richard Kettle was granted 150 Lockyer acres, in 1873, improved to a Homestead in 1878, and a further 80 acres in 1882. Helidon Post Office opened on 1 August 1866. In 1874 settlers in the Helidon District wrote to the Board of General Education, which from 1860 was authorised to establish and administer primary schools, requesting that a school be established in Helidon. The Helidon State School opened on 11 May 1874 with 8 pupils. In 1882, the school had 24 students. Helidon State School was only the second school in the Lockyer Valley district and was the 52nd primary school opened in Queensland. The school's original building was damaged in a cyclone and a new school erected at its current location in School Street in 1919. In 1877, were resumed from the Helidon pastoral run and offered for selection on 24 April 1877. St John the Baptist Anglican Church was dedicated on 9 September 1923 by ArchbishopGerald Sharp, 40 years after it was first proposed to establish a church. It was constructed with volunteer labour. It closed circa 1989. In December 1924, a branch of the Country Women's Association was formed in nearby Gatton, and had a membership of 28 by 1925. The Helidon Branch was formed in 1933. The branch was active but in more recent times struggled with diminishing membership and in 2013 was under threat of closure. The branch closed and the closest branch to Helidon is now the Upper Lockyer/Withcott branch which meets in Withcott. The Sisters of St Joseph came to Helidon in 1874 and opened St Joseph' School. A convent was built in 1884. The school closed in 1963.
1914 cyclone
In April 1914 a cyclonic storm swept through Helidon destroying the Catholic Church and severely damaging the convent, as well as many of the other buildings in the town – the Methodist Church, the school, post office and many businesses. St. Joseph's Catholic Church was rebuilt and was opened in September 1914 by Archbishop Duhig.
Spring water
The quality of the water at Helidon had long been known to the local indigenous population prior to colonisation, who believed the water had great healing and strength giving properties. They knew the spring water as "kowoor". These properties were thought to be the result of high lithium content, leading it to be sold and marketed as a powerful tonic for cleansing the bladder, kidneys and digestive system. In the 1820s, botanist and explorer Alan Cunningham became the first European to be introduced to Helidon's mineral waters. In 1879, chemist Reginald Larard was selling water from the spring as "Oogar Dang Water." The soda water was considered by a government analyst to be "a valuable discovery" and of a quality to "satisfy anyone of its immense superiority over all common soda water". By 1881 he had entered a partnership with Scottish sportsman and entrepreneur Gilbert E. Primrose, who had purchased the agricultural land around the springs, establishing the Helidon Spa Water Company. To combat competition from imported soft drink products, the company would later merge with Owen Gardner & Sons in 1959 to become Kirks, now owned by Coca-Cola Amatil. With the popularity of Helidon's spa water, the first 'spa park' was opened in 1926. During the 60's, a large caravan park and pool were constructed, briefly earning the area the name 'Toowoomba's Gold Coast'. The area remained popular until the 1980s amid water safety concerns, however a few spa hotels still remain today.
Flooding
On 10 January 2011, Helidon was hit by a wall of flood water which had previously struck Toowoomba, part of the 2010–2011 Queensland floods. Few houses were affected directly; those that were inundated sat directly on the creek bank, lower than the rest of the town. The main creek bank did not break, and the town was used as an evacuation centre for nearby Grantham.
Heritage listings
Helidon has a number of heritage-listed sites, which are included in the Helidon Heritage Walk. The walk encompasses:
Helidon Cemetery, first gazetted by the Land Administration Commission in the early 1890s, though the site had been being used before that date.
The Heritage Walk was supported by the Helidon & District Progress Association inc., Helidon State School, and Lockyer Valley Regional Council.
Population
In the 2016 Census, there were 1,059 people in Helidon. 84.3% of people were born in Australia and 89.9% of people spoke only English at home. The most common responses for religion were Catholic 23.2%, No Religion 22.0% and Anglican 15.2%.