What Is the Capital of Arizona? Phoenix, Its History & How to Visit the Capitol

I grew up in the Valley, and “what’s the capital of Arizona?” is one of those questions where the one-word answer hides a much better story. Arizona’s capital didn’t start in Phoenix. It bounced around the territory for 25 years — so often that historians at the Capitol Museum call that era the “capital on wheels.” Phoenix won the job because it sat in the middle, had the water, and got the railroad.

Below is the full timeline, why Phoenix beat Prescott and Tucson, what’s actually inside the historic Capitol, and everything you need to visit it this season — hours, free parking, the new walk-in tours, and what’s on exhibit right now.

Every Capital of Arizona, in Order (1863–Today)

Arizona has had four capital locations since Congress split it off from New Mexico Territory on February 24, 1863. Prescott held the title twice, which is why you’ll see the capital described as moving four times before landing in Phoenix.

One wrinkle worth knowing: during the Civil War, a separate Confederate “Arizona Territory” claimed the southern half of the region in 1861–62. That’s why you’ll occasionally hear Tucson called Arizona’s “first” capital — it depends which side’s map you use. The Union territory that became the state we know started at Fort Whipple.

If you want the rest of the statehood story — the 1910 constitution, President Taft’s veto fight and the Valentine’s Day admission — I cover it in how Arizona became a state.

Why Phoenix Became the Capital of Arizona

Phoenix won because it was the compromise that also happened to be booming. After two decades of the capital swinging between the north and the south, the legislature picked the fast-growing town halfway between them. Four things sealed it:

1. It sat in the middle. Having spent roughly equal time in Prescott and Tucson, lawmakers saw a Salt River Valley capital as more representative of the whole territory.
2. It had water. Jack Swilling’s crew dug a canal off the Salt River in 1867–68, reviving the route of Hohokam canals that once ran about 135 miles. Irrigated farmland drew settlers fast — the name Phoenix, suggested by Darrell Duppa, refers to a city rising from those ancient ruins.
3. The railroad arrived. The first Southern Pacific train pulled in from Maricopa Wells on July 4, 1887 — two years before the capital move. Prescott still had no direct rail connection.
4. It was already the growth town. Phoenix incorporated in 1881 with about 2,500 people and had more than doubled to 5,554 by 1900. It had the brand-new City Hall ready to host the legislature on arrival.

The bet paid off. Roosevelt Dam (dedicated 1911) locked in the Valley’s water supply, and by statehood in 1912 Phoenix was the obvious permanent choice. Nobody has seriously tried to move the capital since.

The Arizona State Capitol Building: What Makes It Different

The Arizona State Capitol is a small, sturdy territorial building built to prove Arizona was ready for statehood. It was finished more than a decade before Arizona actually became a state, and it was built mostly from Arizona materials.

The copper dome

The dome is sheathed in copper as a nod to the industry that built territorial Arizona. Gordon’s original design called for a grander dome and full legislative wings, but money ran short and the plan was scaled back. The copper you see today dates to later restorations — it got its bright “new penny” finish in the 1970s and was redone again after a 2011 hailstorm, just ahead of the 2012 centennial. You’ll often hear that it holds enough copper for about 4.8 million pennies; that’s the figure repeated around the Capitol, though I haven’t found an engineering source for it.

Winged Victory — the statue cowboys used for target practice

The figure on top isn’t Lady Liberty. It’s Winged Victory, modeled on Nike, holding a torch and a wreath. She’s a zinc weather vane that turns on a pedestal when the wind catches her wings. State Historian Marshall Trimble has told the story of territorial-era cowboys riding out from the Washington Street saloons to shoot at her wings just to watch her spin. It sounded like a tall tale until the 1950s, when workers refurbishing the dome found bullet marks.

The Capitol that almost moved to Papago Park

By the 1950s the legislature had outgrown the building, and Frank Lloyd Wright — who lived and worked at Taliesin West in Scottsdale — drew up a new capitol for Papago Park. Lawmakers passed on it and built the House and Senate buildings on either side of the old dome instead, opening them in 1960. The Governor’s office followed into the Executive Tower in 1974.

Visiting the Arizona Capitol Museum (2026 Hours, Parking & Tours)

Yes, you can visit the Arizona State Capitol, and it costs nothing. The original building is now the Arizona Capitol Museum, run under the Arizona Legislature, with more than 20 exhibits on how Arizona went from territory to state. Here’s what I verified with the museum on September 22, 2026:

Getting into the parking lots: head west on Adams Street toward 17th Avenue, or east on Jefferson Street toward 15th Avenue. School and tour buses drop off on 17th Avenue in front of the museum.

What to see inside

• USS Arizona silver service — the silver-and-copper punch bowl set Arizonans gave the battleship. It survived Pearl Harbor because it had been taken off the ship for cleaning.
• The historic House and Senate chambers — you can sit at the old House desks and look down from the upper galleries.
• The restored Governor’s and Secretary of State’s offices, including a flag carried by Teddy Roosevelt’s Rough Riders.
• Triumph in Tragedy (first floor, open now) — stories of local Holocaust survivors, with an interactive testimony you can ask questions of.
• America 250 exhibition (second floor, through December 2026) — includes a brick from Independence Hall.

Wesley Bolin Memorial Plaza

Wesley Bolin Memorial Plaza is the park directly east of the Capitol, between Jefferson and Adams streets, and it holds more than 30 memorials to people and events from Arizona and U.S. history. It’s named for Wesley Bolin, the longtime Arizona Secretary of State who became governor in 1977 and died in office in 1978.

The best-known stops are one of the USS Arizona’s anchors and the Arizona 9/11 Memorial. The plaza is open sunrise to sunset with paved walkways, benches and grass — but no restrooms or picnic tables, so use the museum’s first. Grab the printed memorial map in the Capitol rotunda before you head out.

Phoenix vs. Arizona’s Other Big Cities

Phoenix is both Arizona’s capital and its largest city by a wide margin. With more than 1.6 million residents at the 2020 census (the City of Phoenix now estimates about 1.7 million), it’s the fifth-largest city in the U.S. and the most populous state capital in the country. The metro area is home to roughly 5 million people.

Prescott still leans into its history as the first territorial capital — Whiskey Row and the Sharlot Hall Museum grounds (home of the territorial Governor’s Mansion) are the places to feel it. Down south, Tucson’s ten years as capital are a good excuse to explore the Barrio Viejo and downtown; my Tucson guide has the rest.

Make a Day of It in Downtown Phoenix

The Capitol takes an hour or two. Pair it with one of these for a full day in the capital city:

New to the state? Start with what Arizona is known for, and read up on haboobs before your first monsoon season. More local guides live in our Arizona museums and things to do sections.

Arizona Capital FAQ

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