1825Architecture
The construction of the Miami-Erie Canal between 1825 and 1837 connected Sidney in a north–south direction with the major trade centers in Ohio.
1851History
East–west rail began to be laid in 1851, followed by north–south rail in 1856.
1864Infrastructure
In 1864, the two were merged into the "Bee" Line: the Bellefontaine Railway.
1869Infrastructure
In 1869, the lines were merged into the first "Big Four": the Cleveland, Columbus, Cincinnati and Indianapolis Railway.
1889History
In 1889, the second "Big Four" was formed: the Cleveland, Cincinnati, Chicago and St.
1913Infrastructure
From the 1840s to 1913, canal boats carried Shelby County's products to Cincinnati or Toledo.
1921Architecture
The Historic Sidney Theatre, built in 1921, is located in downtown Sidney and has been recently renovated with a state of the art sound system for concerts, movies and live perf...
1924Architecture
The Big Four Bridge is a local landmark that has carried rail traffic since 1924.
1944History
Roosevelt used during his visit to Sidney in 1944) while touring the country.
1964Military
Sidney was the recipient of the 1964 All-America City Award.
1984History
In 1984, President Ronald Reagan visited the city of Sidney on a train (the same train that President Franklin D.
2000History
=== 2000 census ===
As of the census of 2000, there were 20,211 people, 7,981 households, and 5,371 families residing in the city.
2004History
Bush visited the town in 2004, eating at the Spot Restaurant in downtown Sidney.
2009History
In 2009, it was the subject of the documentary film 45365.
2010History
=== 2010 census ===
As of the census of 2010, there were 21,229 people, 8,344 households, and 5,577 families residing in the city.
2012History
Republican presidential candidate Mitt Romney visited the Shelby County Fairgrounds in Sidney in 2012.
2020History
As of the 2020 census, 98.7% of residents lived in urban areas, while 1.3% lived in rural areas.
2021History
The current City Manager is Andrew Bowsher, who was appointed in September 2021.
2025History
As of 2025, the Auto-Vue has been permanently closed.