Arizona

Pinal

425,264
2020 population
1880
first census record
15
census records

About Pinal

Pinal, Arizona, first appears in the United States federal census in 1880, when it recorded a population of 3,044. At the most recent census, in 2020, its population stood at 425,264.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 15 documented military engagements have been recorded within the county, among them Hohokam Classic Period Warfare, Hohokam Platform Mound Defensive Use – Casa Grande, Hohokam Abandonment – Casa Grande Conflict, and 106 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020425,264
2010375,770
2000179,727
1990116,379
198090,918
197067,916
196062,673
195043,191
194028,841
193022,081
192016,130
19109,045
19007,779
18904,251
18803,044
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Pinal

Military engagements that took place in Pinal, Arizona.

Hohokam Classic Period Warfare
1300
Hohokam Platform Mound Defensive Use – Casa Grande
1300
Hohokam Abandonment – Casa Grande Conflict
1380
Gila River March Skirmishes
1846
Battle of Picacho Peak
1862
Skirmish at Picacho Pass (California Column Follow-up)
1862
Picacho Peak Skirmish — Arizona (April 15, 1862)
1862
Battle of Bloody Tanks / Pinal Mountains
1864
Battle of Aravaipa Canyon AZ
1869
Battle of Superstition Mountains AZ
1870
Massacre at Camp Grant
1871
Camp Grant Massacre (April 30, 1871)
1871
Camp Grant Massacre, Arizona 1871
1871
Superstition Mountains Fight — Tonto Apache 1872
1872
Gila River War Relocation Center
1942

Historic places in Pinal

National Register of Historic Places listings in Pinal, Arizona.

Casa Grande Stone Church
Casa Grande
La Casa del High Jinks
Oracle
Stone Warehouse
Casa Grande
Casa Grande National Monument
Coolidge
Hohokam-Pima National Monument
Gila River Indian Reservation
Pinal County Courthouse
Florence
Church of the Nazarene
Casa Grande
Devil's Canyon Bridge
Superior
Harvey-Niemeyer House
Florence
Acadia Ranch
Oracle
First Baptist Church
Casa Grande
Building at 400 East Third Street
Casa Grande
Snaketown
Chandler
All Saint's Church
Oracle
Johnson's Grocery Store
Casa Grande
Cruz Trading Post
Casa Grande
Saint Anthony's Church and Rectory
Casa Grande
Magma Hotel
Superior
Florence Union High School
Florence
Valley National Bank
Casa Grande
Casa Grande Woman's Club Building
Casa Grande
Browse all Arizonahistoric sites ›

Other counties in Arizona

Explore census history and historic records for more Arizona counties.

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Everything a full report reveals about Pinal County, Arizona

This page charts the census history of Pinal County, Arizona. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Arizonahistory ›NRHP historic sites ›Military engagements ›Notable people from Arizona›

Frequently asked about Pinal

When does Pinal first appear in the US census?
Pinal, Arizona first appears in the federal census in 1880, with a recorded population of 3,044.
What is the population of Pinal?
At the most recent federal census (2020), Pinal had a recorded population of 425,264.
Were any battles fought in Pinal?
15 documented military engagements took place in Pinal, including Hohokam Classic Period Warfare, Hohokam Platform Mound Defensive Use – Casa Grande, Hohokam Abandonment – Casa Grande Conflict.
How many historic places are in Pinal?
106 sites are listed on the National Register of Historic Places in Pinal, Arizona.
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