The following is a timeline of the history of the city of Mesa, Arizona, United States.
Prior to 20th century
- 1878 – Mormon settlers arrive.
- 1883
- Mesa City incorporated. The townsite's bounded by Broadway Road on the south, Mesa Drive on the east, University Drive on the north, & Country Club Drive on the west.
- Alexander Findlay Macdonald becomes mayor.
- 1892 – Mesa Free Press newspaper begins publication.
- 1896 – Sirrine House built.
20th century
1900s–1960s
- 1902 – Evans School for Boys opens; later renamed Mesa Ranch School
- 1908 – Granite Reef Diversion Dam is completed; the Salt River Valley Water Users' Association permanently provides water for irrigation canals in Mesa from this point, replacing the earlier Mormon-lead efforts
- 1909 – The original "Old Main" campus of Mesa High School opens
- Mesa installs potable waterworks system
- 1911 – Roosevelt Dam is completed, regulating the flow of the Salt River for the first time, and providing cheap electrical power to parts of Mesa
- Mesa takes over irrigation system operation within incorporated city limits
- 1915 – Mesa installs sanitary sewer system and septic tank tract at Riverview
- 1917 – Mesa purchases existing gas and electric utilities from Dr. A.J. Chandler
- 1921 – Mesa Welfare League founded.
- 1923 – Mesa Tribune newspaper begins publication.
- 1927 – Mesa Arizona Temple dedicated (first time).
- 1928 – first production of the Mesa Arizona Easter Pageant
- 1931 – Town area expanded.
- 1937 – City Hall built.
- 1941
- U.S. Williams Air Force Base established.
- British Flying Training School at Falcon Field active near Mesa
- 1948
- Mesa Country Club established.
- Falcon Field becomes part of Mesa
- 1949 – Modern wastewater treatment plant built at Riverview
- 1950
- KTYL-FM radio begins broadcasting.
- Population: 16,790.
- 1953 – General Motors Desert Proving Grounds opens
- KTYL-TV (channel 12; the current day KPNX) launches. The NBC affiliate continues to be licensed to Mesa, but operates from Phoenix
- Mesa celebrates 75th anniversary Diamond Jubilee
- 10 million gallon Pasadena city reservoir completed
- 1962 – Westwood High School opens
- 1965 – Mesa Community College, and Adelante con Mesa established.
- 1967
- Regional Maricopa Association of Governments established.
- Original "Old Main" building of Mesa High School burns to the ground
- 1968
- Tri City Mall in business.
- KMND radio begins broadcasting.
- City of Mesa takes over operations of Falcon Field
1970s–1990s
- 1970
- Lehi becomes part of city.
- Population: 63,049.
- 1971 – Prehab of Mesa (youth-related nonprofit) established.
- 1972
- Mesa High School reopens at a new location (farther east and south)
- Mesa Central High School opens at site of original Mesa High campus
- 1973 – Dobson Ranch planned community began selling homes in the first phase of its 26-year development
- 1975
- After extensive renovations, the Mesa Arizona Temple is rededicated
- The Park of the Canals is added to the National Register of Historic Places; work then commences for developing park facilities and later the botanical garden
- 1976 – Mountain View High School opens
- 1977
- 1978 – Western Design Center is founded by Bill Mensch
- Mesa celebrates 100-year Centennial
- 1979
- Fiesta Mall in business.
- Mesa Amphitheatre built.
- Mesa Weekly News begins publication.
- 1980
- Population: 152,453.
- Arizona Museum for Youth opens
- Used Cars, filmed primarily in Mesa, opens in theaters
- 1981
- Dobson High School opens
- Mesa Sister Cities Association and Mesa United Way active.
- Sister city relationship established with Guaymas, Mexico.
- Champlin Fighter Museum opens
- 1983
- 1984 – Al Brooks becomes mayor.
- 1987
- Mesa Historical Museum opens
- Living Word Bible Church active.
- 1988
- Peggy Rubach becomes mayor.
- Red Mountain High School opens
- 1989 – Sister city relationship established with Caraz, Peru.
- 1990
- Population: 288,091.
- Superstition Springs Center opens
- first section of Arizona State Route 202 opens; downtown Lehi was removed to make way for it
- 1991
- East Valley Institute of Technology Main campus opens
- Mesa Community Action Network active.
- 1992
- Willie Wong becomes mayor.
- Mesa Solar Sox is founded
- 1993
- Sister city relationship established with Kaiping, China.
- Williams Air Force Base closes, begins transition to Williams Gateway Airport
- 1994
- Williams Gateway Airport opens
- Paz De Cristo Community Center opens
- 1995
- A.T. Still University's Arizona School of Health Sciences opens
- Heritage Academy (Arizona) opens
- the current Organ Stop Pizza location in Mesa is opened
- 1996
- City website online.
- Wayne Brown becomes mayor.
- Arizona State University at the Polytechnic campus opens on the former Williams Air Force Base
- Sun Valley High School opens
- 1997
- Harkins Superstition Springs cinema in business.
- Noah Webster School opens.
- the new HoHoKam Stadium opens
- 1998 – Tri City Mall closes, all existing buildings demolished except for former site of JCPenney store, which remains standing until 2006
- 1999
- Skyline High School opens
- AMC Mesa Grand 24 cinema in business.
- Saint Ignatius of Antioch Church active (approximate date).
- Sister city relationship established with Burnaby, Canada.
- 2000
- Keno Hawker becomes mayor.
- Population: 396,375.
21st century
- 2002 – Desert Ridge High School opens; it is physically located in Mesa, but is part of Gilbert Public Schools instead of Mesa Public Schools.
- 2003
- Arizona School of Dentistry and Oral Health opens at A.T. Still University's Mesa campus
- Champlin Fighter Museum closed
- 2005
- Mesa Arts Center built.
- Mesa Miners is founded
- Mesa adopts city flag
- 2006 – Mesa Preparatory Academy opens
- 2007
- Mesa Riverview opens
- Gateway 12/IMAX Theatre (cinema) in business.
- A.T. Still University School of Osteopathic Medicine in Arizona opens at A.T. Still University's Mesa campus
- 2008
- October: Immigration raid by Maricopa County Sheriff.
- Sycamore Drive and Main Street Valley Metro Rail station opens, in front of the former Tri City Mall location; it is the first Metro Light Rail station in Mesa, and is the eastern terminator until future expansions are completed
- Scott Smith becomes mayor.
- 2009
- closure of the General Motors Desert Proving Grounds is completed
- East Valley Mormon Choral Organization established, as part of the Millennial Choirs and Orchestras
- 2010
- United Food Bank active.
- Population: city 439,041; metro 4,192,887.
- 2011
- East Valley Institute of Technology East campus opened, adjacent to ASU Polytechnic
- Humanist Society of Greater Phoenix active.
- 2012
- February 22: Republican Party presidential primaries debate held.
- December 10: Alexander murder trial begins.
- 2013
- 2014
- 2021 - after renovations and redevelopment of the surrounding area, the Mesa Arizona Temple of the Church of Jesus Christ of Latter Day Saints is rededicated on December, 12th 2021.