The suburb's northern boundary is marked by the Brisbane River.
Sinnamon Park is named for the pioneering Sinnamon Family. The land occupied by Sinnamon Village retirement complex and the river flats east of the Centenary Freeway were formerly the family farm.
A small portion of Sinnamon Park comes from the Wolston Estate, consisting of 54 farms on an area of 3000 acres, offered for auction at Centennial Hall, Brisbane, on 16 October 1901. Wolston Estate is the property of M. B. Goggs, whose father obtained the land forty years previously in the 1860s and after whom Goggs Road is named. Only three of the farms sold at the original auction.
In 1879, the local government area of Yeerongpilly Division was created. In 1891, parts of Yeerongpilly Division were excised to create Sherwood Division becoming a Shire in 1903 which contained the area of Wolston Estate. In 1925, the Shire of Sherwood was amalgamated into the City of Brisbane. 
Sinnamon Park has a number of heritage-listed sites, including:
- 675 Seventeen Mile Rocks Road: Sinnamon Memorial Uniting Church
- 693 Seventeen Mile Rocks Road: Sinnamon Farm
In the 2011 census, the population of Sinnamon Park was 6,362, 53.4% female and 46.6% male.
The median age of the Sinnamon Park population was 39 years, 2 years above the Australian median.
61.1% of people living in Sinnamon Park were born in Australia, compared to the national average of 69.8%; the next most common countries of birth were England 5.3%, New Zealand 3%, India 2.7%, South Africa 2.5%, Vietnam 2.5%.
72.2% of people spoke only English at home; the next most common languages were 3.7% Vietnamese, 3% Mandarin, 2% Cantonese, 1.7% Hindi, 1.1% Persian (excluding Dari).
- Australian Bureau of Statistics (31 October 2012). "Sinnamon Park (State Suburb)". 2011 Census QuickStats. Retrieved 2 February 2013.
- "Jamboree Ward". Brisbane City Council. Brisbane City Council. Retrieved 12 March 2017.
- "Plan of the Wolston Estate". 1901. hdl:10462/deriv/252490. Cite journal requires
- "SALE OF WOLSTON ESTATE". The Brisbane Courier. LVIII (13, 651). Queensland, Australia. 12 October 1901. p. 4. Retrieved 21 May 2019 – via National Library of Australia.
- "LATEST NEWS IN BRIEF". The Queenslander. LXI (1353). Queensland, Australia. 26 October 1901. p. 780. Retrieved 21 May 2019 – via National Library of Australia.
- Fones, Ralph (1 January 1993). "Suburban conservatism in the Sherwood Shire 1891-1920". UQ eSpace. Retrieved 2 March 2020.
- "Sinnamon Memorial Uniting Church (entry 600235)". Queensland Heritage Register. Queensland Heritage Council. Retrieved 6 July 2013.
- "Sinnamon Farm (entry 600233)". Queensland Heritage Register. Queensland Heritage Council. Retrieved 6 July 2013.