The historic capitol in Phoenix anchors Arizona’s transition from territorial government to modern state institutions.
Arizona
The park protects a vast Colorado River landscape together with a long record of human and cultural connections in northern Arizona.
The park protects a defining Sonoran Desert landscape around Tucson and links conservation, research, and regional identity.
The airport is a primary aviation hub linking metropolitan Phoenix and Arizona with national and international networks.
The Tucson-based public research university predates statehood and anchors education, science, and regional research.
The Tempe-rooted public research university is a central part of the Phoenix-area education, research, and innovation network.
The system carries Colorado River water to major population centers in central and southern Arizona.
The dam spans the Colorado River at the Arizona-Nevada border and is a defining water and power landmark of the Southwest.
Year-by-year change
| Year | Observed changes & events |
|---|---|
| 1863 | Arizona Territory is formally organized — On December 29, 1863, Governor John N. Goodwin formally proclaimed the organization of Arizona Territory at Navajo Springs, marking the start of a separate territorial government. |
| 1885 | University of Arizona is established — A public higher-education institution was established in Tucson while Arizona was still a territory. |
| 1912 | Arizona enters statehood — Arizona moved from territorial administration into state government. |
| 1919 | Grand Canyon National Park is established — Grand Canyon became a national park, placing a defining northern Arizona landscape within long-term federal protection. |
| 1933 | Saguaro National Monument is designated — Federal protection was established for the saguaro ecosystem and Sonoran Desert landscape around Tucson. |
| 1935 | Hoover Dam is dedicated — The major Colorado River dam was formally dedicated, marking a major shift in Southwest water and power infrastructure. |
| 1968 | Central Arizona Project is authorized — Federal law authorized a major system to move Colorado River water to central and southern Arizona. |
| 1980 | Arizona enacts the Groundwater Management Act — Arizona enacted a major groundwater law to address overdraft and strengthen long-run water planning in key population areas. |
| 1986 | Total primary energy production +136.2K · Total energy consumption +8.5K |
| 1987 | Total primary energy production +9.6K · Total energy consumption +16.1K |
| 1988 | Total primary energy production +117.9K · Total energy consumption +43.5K |
| 1989 | Total primary energy production −167.6K · Total energy consumption +30.2K |
| 1990 | Total primary energy production +117.8K · Total energy consumption +834 |
| 1991 | Total primary energy production +83.9K · Total energy consumption +10.5K |
| 1992 | Total primary energy production −10.3K · Total energy consumption +31.1K |
| 1993 | Total primary energy production −45.8K · Total energy consumption +13.6K · Central Arizona Project reaches substantial completion — The Central Arizona Project reached substantial completion and moved from its main construction phase into long-run operation. |
| 1994 | Total primary energy production +33.4K · Total energy consumption +52.1K |
| 1995 | Total primary energy production +19.8K · Total energy consumption +31.4K |
| 1996 | Total primary energy production −13K · Total energy consumption +61.1K |
| 1997 | Total primary energy production +43.9K · Total energy consumption +13K |
| 1998 | Total primary energy production −6K · Total energy consumption +60.2K |
| 1999 | Total primary energy production +6.5K · Total energy consumption +49.1K |
| 2000 | Total primary energy production +23.2K · Total energy consumption +54.9K |
| 2001 | Total primary energy production −16.7K · Total energy consumption +12.3K |
| 2002 | Total primary energy production +8K · Total energy consumption −4.1K |
| 2003 | Total primary energy production −43.2K · Total energy consumption +21.4K |
| 2004 | Total primary energy production +10.9K · Total energy consumption +52.8K |
| 2005 | Total primary energy production −38K · Total energy consumption +39.3K |
| 2006 | Total primary energy production −102K · Total energy consumption +46.1K |
| 2007 | Total primary energy production +28.9K · Total energy consumption +9.1K |
| 2008 | Total primary energy production +33.9K · Total energy consumption −33.5K |
| 2009 | Total primary energy production −8.3K · Total energy consumption −82.2K |
| 2010 | Total primary energy production +13.4K · Total energy consumption +53.6K |
| 2011 | Total primary energy production +16.9K · Total energy consumption +26.2K |
| 2012 | Total primary energy production −11.8K · Total energy consumption −24.8K · Population +73.6K · Median household income −$496 · Median home value −$21.5K · Unemployment rate +0.85pp |
| 2013 | Total primary energy production −6K · Total energy consumption +17K · Population +68.7K · Median household income −$482 · Median home value −$10.8K · Unemployment rate +0.64pp |
| 2014 | Total primary energy production +31.7K · Total energy consumption +2.3K · Population +81.8K · Median household income +$154 · Median home value −$2.2K · Unemployment rate −0.47pp |
| 2015 | Total primary energy production −20.1K · Total energy consumption +19K · Population +80.4K · Median household income +$327 · Median home value +$4.6K · Unemployment rate −1.01pp |
| 2016 | Total primary energy production −28.3K · Total energy consumption +21.7K · Population +86.6K · Median household income +$1.1K · Median home value +$9.4K · Unemployment rate −0.94pp |
| 2017 | Total primary energy production +21.5K · Total energy consumption +518 · Population +81.4K · Median household income +$2.2K · Median home value +$16.3K · Unemployment rate −0.88pp |
| 2018 | Total primary energy production −2.2K · Total energy consumption +11.1K · Population +136.7K · Median household income +$2.7K · Median home value +$16.4K · Unemployment rate −0.65pp |
| 2019 | Total primary energy production −53.6K · Total energy consumption +18.7K · Population +103.6K · Median household income +$2.7K · Median home value +$15.9K · Unemployment rate −0.57pp |
| 2020 | Total primary energy production −86.9K · Total energy consumption −56.2K · Population +123.8K · Median household income +$2.6K · Median home value +$16.5K · Unemployment rate −0.05pp · Phoenix Sky Harbor completes a major terminal modernization phase — Phoenix Sky Harbor completed a major phase of its long-running terminal modernization program. |
| 2021 | Total primary energy production +6.3K · Total energy consumption +43.3K · Population −94.9K · Median household income +$4.4K · Median home value +$23.6K · Unemployment rate −0.22pp |
| 2022 | Total primary energy production +6.3K · Total energy consumption +29.5K · Population +93.1K · Median household income +$6.7K · Median home value +$55.8K · Unemployment rate −0.25pp |
| 2023 | Total primary energy production +2.5K · Total energy consumption +17.9K · Population +95.9K · Median household income +$4.3K · Median home value +$37.5K · Unemployment rate −0.19pp |
| 2024 | Total primary energy production +22.3K · Total energy consumption +37.1K · Population +110.7K · Median household income +$3.1K · Median home value +$35.6K · Unemployment rate −0.08pp |
| 2025 | Phoenix Sky Harbor begins a new north concourse project — Construction began on a new north concourse at Phoenix Sky Harbor, extending the airport’s long-run expansion program. |
| 2026 | Arizona enacts the State Affordability Infrastructure District Act — In 2026, Arizona enacted HB 2999 to create State Affordability Infrastructure Districts, establishing a legal framework for financing public infrastructure such as roads, water, and sewer systems associated with new housing development. |
Analysis charts
Full report
Arizona’s long-run change cannot be reduced to Phoenix growth. Population expands overall, household income first weakens and then rises, home value goes through a clearer decline and rebound, and unemployment turns downward after an early high. Colorado River infrastructure, groundwater management, Tucson research and conservation, Grand Canyon, and Phoenix aviation form distinct regional systems.
Population growth and the Phoenix-centered urban system
Arizona population expands over the long run, with a temporary dip followed by renewed growth. Metropolitan Phoenix is central to that expansion, but Tucson, northern high-country communities, rural areas, and tribal communities operate under different conditions.
Population growth creates continuing planning pressure on housing, transport, public services, land, and water.
Housing goes through both decline and recovery
Arizona median home value weakens clearly in the early period and then turns into a sustained rise that becomes much steeper later.
A statewide median masks the supply and demand conditions of Phoenix suburbs, Tucson, high-country recreation communities, and rural markets.
Income and unemployment provide different labor-market signals
Median household income moves from early weakness into long-run gains, while unemployment falls after an early high.
Technology, services, logistics, and manufacturing around Phoenix, education and research in Tucson, tourism, construction, and agriculture create different local labor structures.
Water infrastructure and groundwater policy shape the planning context
The Central Arizona Project links Colorado River water with major population centers, while the Groundwater Management Act strengthened the institutional framework for managing groundwater and development together.
These institutions show why water is a structural part of Arizona planning, but they are not a single causal explanation for housing, income, or population change.
Grand Canyon, Saguaro and aviation create distinct regional histories
Grand Canyon anchors a northern conservation and tourism network, while Saguaro reflects the scientific and conservation history of the Sonoran Desert around Tucson.
Phoenix Sky Harbor modernization and expansion show that metropolitan connectivity continues to evolve.
FAQ
Is Arizona population still growing?
The long-run direction is upward, although the series includes a temporary decline before growth resumes. Statewide growth does not mean every community changes at the same pace.
Does rising home value mean household income kept pace?
No. The measures follow different early paths and different rates of later increase. Housing supply, financing, local demand, and income all matter.
Does water policy directly explain Phoenix growth?
Water infrastructure and policy are essential planning context, but population, housing, and income cannot be explained by one policy alone.
Arizona’s long-run story combines population growth, household income that turns upward after early weakness, a housing market that experiences decline and strong recovery, and unemployment that moves lower over time. Colorado River and groundwater management, the distinct metropolitan networks of Phoenix and Tucson, Grand Canyon and Sonoran Desert conservation, and expanding aviation infrastructure provide the regional context.