| Year | Event |
|---|
| 100 AD | Roman industrial settlement built at Wilderspool on the River Mersey |
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| 1086 | Domesday Book describes Warrington as ‘Walintune’, a village near the ford over the Mersey at Latchford and Howley |
| 1277 | Market recognised by Royal Charter |
| 1285 | First mention of a bridge over the Mersey at Warrington |
| 1364 | Second Warrington bridge completed |
| 1495 | Henry VII opens three-arched stone bridge over the river |
| 1617 | James I stays at Bewsey Old Hall |
| 1648 | Royalists surrender to Cromwell during the Civil War, Cromwell stayed in Warrington |
| 1697 | Thomas Patten makes the Mersey navigable to Bank Quay |
| 1720 | Mersey and Irwell Navigation make the river passable between Manchester and Warrington, completing the link to Liverpool |
| 1750 | Thomas Patten commissions James Gibbs to build Bank Hall as residential Home |
| 1757 | First commercial canal - the Sankey St Helens is cut |
| 1757/86 | Warrington Academy established |
| 1787 | First Boulton & Watt steam engine in Lancashire installed at Latchford cotton mill |
| 1801 | Old Quay canal connects Howley to Runcorn, ending reliance on Mersey tides |
| 1814 | Joseph Crosfield establishes soap works at Bank Quay |
| 1822 | Old Billy, said to be the world's oldest horse, dies aged 62 (according to the Guinness Book of Records!) |
| 1830 | Liverpool-Manchester railway opened near Warrington |
| 1837 | Victoria Bridge built |
| 1847 | Warrington becomes a borough |
| 1848 | Public Library & Museum opened |
| 1855 | The largest iron ship ever built to date - the Tayleur - launched at Bank Quay |
| 1872 | Bank House purchased by Council to become Town Hall |
| 1894 | Manchester Ship Canal built south of Warrington |
| 1895 | Town Hall Gates purchased |
| 1913/15 | Present Warrington bridge - on of the world's first pre-stressed concrete bridges built |
| 1942/93 | RAF Burtonwood site of USAF base RAF Burtonwood |
| 1963 | Thelwall viaduct on M6 built |
| 1974 | Local government changes move Warrington's administration from Lancashire to Cheshire |
| 1998 | Warrington becomes a Unitary Authority taking responsibilities from Cheshire County Council |
| 1998 | Town Hall Gates illuminated for the first time |
