20th century
- 1900 – Low Level Bridge completed.
- 1903
- Edmonton Journal founded.
- Methodist Church Board founds Alberta College
- Edmonton, Yukon and Pacific Railway crossed Low Level Bridge to connect Edmonton by rail to Strathcona and thence to the outside world.
- 1904
- Incorporated as a city in 1904 with a population of 8,350.[7]
- Elected Liberal MP Frank Oliver in 1904 federal election. (Strathcona on the southside elected Liberal MP Peter Talbot.)
- 1905
- Edmonton became the capital of Alberta, as Alberta became a province in Confederation.
- Canadian Northern Railway (CNoR) arrived in Edmonton, accelerating growth. This was first transcontinental line to enter Edmonton.
- 1907-13 – real estate and construction boom. With amalgamation of Cities of Strathcona and Edmonton, the population of Edmonton grew to 72,500.[7]
- 1907 – Six miners die in a fire at the Strathcona Coal Company, the worst industrial accident Edmonton has suffered
- 1908
- Edmonton Hockey Club makes the city's first appearance at the Stanley Cup finals.
- Strathcona Canadian Pacific Railway Station completed, along the Calgary & Edmonton Railway line.
- University of Alberta established and began instruction.
- 1909
- Grand Trunk Pacific Railway entered Edmonton.[9][circular reference]
- Arlington Apartments completed. (destroyed by fire in 2005)[10][circular reference]
- 1910 – Third McDougall Church completed, dedicated in the honour of George McDougall.
- 1911 – Connaught Armoury built.
- 1912
- Edmonton amalgamated with the city of Strathcona, a city since 1907, south of the North Saskatchewan River; as a result, the city extended south of the river.
- First Presbyterian Church completed.
- 1913
- Alberta Legislature Building completed.
- High Level Bridge opened. It carried a CPR rail-line and streetcar lines as well as a road for private vehicles (both horse-drawn and gas-fueled) and sidewalks for pedestrians.
- Robertson-Wesley United Church completed.
- Edmonton economy collapses. Land in the Hudson Bay Co reserve was put on the market and sold, with the money raised by the sales going to HBC headquarters out of the province. British investment dried up as Europe invested in military preparation for the coming war. This all caused real estate prices to drop. With the start of World War I, the city's population declined, going from 72,000 in 1914 to under 54,000 in only two years, people leaving to eke out existence on farms, or off to war, or to other centres.[7]
- 1914
- Vote held on street naming system (following amalgamation of Strathcona and Edmonton, each with their own systems) Numerical numbering (centred on Jasper Avenue and 101 Street) got 2099 votes; "Edmonscona" scheme (a mixed number-name system) got 1471 votes.[11]
- 1915
- Fort Edmonton (#5) dismantled.
- Hotel Macdonald opened.
- North Saskatchewan River flood of 1915 leaves 2000 homeless.
- 1917 – Edmonton annexes village of West Edmonton (Calder).
- 1918–1919 – Spanish Flu kills 614 Edmontonians.
- 1920 – Edmonton Symphony Orchestra holds its first performance.
- 1922
- CJCA begins broadcasting as city's first radio station.
- Edmonton Grads win the Canadian Basketball Championship. The team wins this competition each year from 1922 to 1940.
- Edmonton Elks football team, owned by local Elks society, scored touchdowns. The team was later named the Edmonton Eskimos (and has now returned to its earlier name).[12][circular reference][13][circular reference]
- 1923
- Edmonton Grads win the World Basketball Championships.
- 1923 Edmonton used single transferable voting for the first time in its municipal elections. The city switched back to block voting in 1928.[14]
- 1924 – The Edmonton Art Gallery opened for the first time.
- 1926 – Edmonton elected its first "third-party" MLAs - UFA's John Lymburn and Labour's Lionel Gibbs. Use of proportional representation likely helped make this possible.
- 1929 – Blatchford Field (now Edmonton City Centre (Blatchford Field) Airport) commenced operation.[15]
- 1930
- Canadian Derby established.
- The Great Depression hit Edmonton hard. Unemployment soared.
- 1935 – Edmonton elected its first Social Credit MLAs.
- 1937 – Edmonton's hottest temperature (until 1998) is recorded as 37.2 °C on June 29.
- 1938
- Al-Rashid Mosque completed.
- Clarke Stadium completed.
- 1947 – The first major oil discovery in Alberta was made near the town of Leduc, south of Edmonton.[16]
- late 1940s and 1950s – The subsequent oil boom gave Edmonton new status as the "Oil Capital of Canada", and during the 1950s, the city increased in population from 149,000 to 269,000.[7] After a relatively calm but still prosperous period in the 1960s, the city's growth took on renewed vigour concomitant with high world oil prices, triggered by the 1973 oil crisis and the 1979 Iranian Revolution. The oil boom of the 1970s and 1980s ended abruptly with the sharp decline in oil prices on the international market and the introduction of the National Energy Program in 1981; that same year, the population had reached 521,000.[7]
- 1942 – A record-breaking snowfall of 39.9 centimetres hits Edmonton on November 15.
- 1947 – St. Josaphat Cathedral completed.
- 1947–1965 – Suburban boom began.
- 1948 – Edmonton Flyers wins the Allan Cup.
- 1950 – Edmonton Mercurys win the Ice Hockey World Championships
- 1951 – Edmonton Bulletin ceases production.
- 1952
- Clover Bar Bridge completed.
- Edmonton Mercurys win the Olympic Gold medal.
- 1953 – Nationwide epidemic, 16 Edmontonians died from poliomyelitis.
- 1954 – Edmonton Eskimos win their first Grey Cup.
- 1955
- Groat Bridge completed.
- Westmount Centre opened as the city's first shopping mall.
- 1957 – Jubilee Auditorium opened.
- 1959 – Valley Zoo opened.
- 1961 – Beverly, Alberta amalgamated with the City of Edmonton.
- 1962
- Edmonton's local exhibition had been renamed to Klondike Days.
- Northern Alberta Institute of Technology established.
- 1963
- Edmonton Oil Kings win their first Memorial Cup.
- Edmonton Opera established.
- 1964 – Jasper Place amalgamated with Edmonton.
- 1965
- Citadel Theatre opened.
- Edmonton aircraft bombing.
- 1966 – CN Tower was completed, the tallest building in Edmonton at the time, and city's first skyscraper.
- 1967 – Provincial Museum and Archives of Alberta opened.
- 1969 – Edmonton becomes the first Canadian city to join the North American Emergency Telephone 911 plan.
- 1970s – Major construction boom occurred.
- 1971
- Grant MacEwan Community College established.
- James MacDonald Bridge opened.
- AGT Tower was completed and the tallest building in Edmonton at the time.
- The Mill Woods Development Concept was approved. The area was planned to house approximately 120,000 people, its population in 2023.
- 1972
- Alberta Oilers founded.
- Ukrainian Canadian Archives & Museum Of Alberta opened.
- 1974
- Fort Edmonton Park established.
- Northlands Coliseum opened.
- 1976
- Heritage Days Festival begins at Mayfair Park.
- Muttart Conservatory opened.
Commonwealth Stadium
- 1978
- 1978 Commonwealth Games.
- Edmonton Light Rail Transit started.
- Edmonton Sun founded.
- Commonwealth Stadium opened.
- Kinsmen Centre opened.
- 1979 – Edmonton Oilers join the National Hockey League.
- 1980s – Although the National Energy Program was later scrapped by the federal government, the collapse of world oil prices in 1986 and massive government cutbacks kept the city from making a full economic recovery until the late 1990s.[17]
- 1980
- Edmonton Folk Music Festival launched.
- The Great Divide waterfall flows from the High Level Bridge for the first time.
- 1981
- Heritage Mall opened
- West Edmonton Mall opened.
- 1982
- Edmonton Fringe Theatre Festival is held for the first time.
- A large explosion at the CIL plant in Edmonton could be felt up to 30 kilometres (19 mi) away.[18]
- 1983
- 1983 Summer Universiade.
- Hotel Macdonald closes after falling into despair.
- Manulife Place was completed and was the tallest building in Edmonton until it was surpassed in 2017 by the Stantec tower.
- Edmonton Convention Centre opened.
- Phase II of West Edmonton Mall opened.
- Fantasyland opened
- 1984
- Edmonton hosts the Grey Cup for the first time.
- Edmonton Oilers win their first Stanley Cup
- Edmonton Trappers win their first Pacific Coast League championship.
- Edmonton Space Science Centre opened.
- 1985
- Edmonton International Street Performer's Festival is held for the first time.
- Phase III of West Edmonton Mall opened.
- 1986
- Edmonton International Film Festival is held for the first time.
- North Saskatchewan River rises to 11.5 metres, the worst flood since 1915.
- Three people died and one was injured when the Mindbender roller coaster at West Edmonton Mall's Fantasyland derailed.
- The Works Art & Design Festival launched.
- World Waterpark opened.
- 1987 – Edmonton tornado.
- 1991 – Hotel Macdonald reopened after significant restoration and a change in ownership.
- 1992 – The current Edmonton City Hall completed.
- 1995
- After 91 years of service, Telus acquired Edmonton Telephones Corporation (ED TEL), the city's publicly owned telephone company.
- Edmonton Queen christened.
- Fantasyland changed its name to "Galaxyland", after a lawsuit filed by the Walt Disney Company.
- 1996 – 1996 World Figure Skating Championships.
- 1997 – Winspear Centre opened.
- 1998 – Edmonton's hottest temperature is recorded at 38.3 °C (100.9 °F), on August 5.[19]
- 1999 – Phase IV of West Edmonton Mall opened.
