Arizona

Pima

1,043,433
2020 population
1870
first census record
16
census records

About Pima

Pima, Arizona, first appears in the United States federal census in 1870, when it recorded a population of 5,716. At the most recent census, in 2020, its population stood at 1,043,433.

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

On the ground today, 11 documented military engagements have been recorded within the county, among them Pima Revolt – Sonóita Mission Massacre 1751, Apache Raid – San Xavier del Bac 1752, Cienegas Creek Skirmish (1862), and 218 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
20201,043,433
2010980,263
2000843,746
1990666,880
1980531,443
1970351,667
1960265,660
1950141,216
194072,838
193055,676
192034,680
191022,818
190014,689
189012,673
188017,006
18705,716
Source

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

Battles & engagements in Pima

Military engagements that took place in Pima, Arizona.

Pima Revolt – Sonóita Mission Massacre 1751
1751
Apache Raid – San Xavier del Bac 1752
1752
Cienegas Creek Skirmish (1862)
1862
Confederate Occupation of Tucson
1862
California Column Arizona Pursuit (1862)
1862
Battle of Cañon del Oro AZ
1866
Canyon del Oro Skirmish — Tucson Area Apache Raids 1869
1869
Battle of Cienegita AZ
1869
Battle of Pantano Wash AZ
1871
Battle of Iron Springs — Johnny Ringo's End
1882
Titan II Missile Complex — Davis-Monthan AFB (308th SMW)
1963

Historic places in Pima

National Register of Historic Places listings in Pima, Arizona.

Sosa-Carrillo-Fremont House
Tucson
Old Library Building
Tucson
Empire Ranch
Greaterville
Armory Park Historic Residential District (Boundary Increase)
Tucson
Armory Park Historic Residential District (Additional Documentation)
Tucson
Kentucky Camp Historic District
Sonoita
Southern Pacific Railroad Locomotive No. 1673
Tucson
Desert Laboratory
Tucson
Gachado Well and Line Camp
Lukeville
Lowell Ranger Station
Tucson
Hotel Congress
Tucson
Fox Theatre
Tucson
Barrio Santa Rosa
Tucson
U.S. Post Office and Courthouse
Tucson
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 Pima County, Arizona

This page charts the census history of Pima 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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Frequently asked about Pima

When does Pima first appear in the US census?
Pima, Arizona first appears in the federal census in 1870, with a recorded population of 5,716.
What is the population of Pima?
At the most recent federal census (2020), Pima had a recorded population of 1,043,433.
Were any battles fought in Pima?
11 documented military engagements took place in Pima, including Pima Revolt – Sonóita Mission Massacre 1751, Apache Raid – San Xavier del Bac 1752, Cienegas Creek Skirmish (1862).
How many historic places are in Pima?
218 sites are listed on the National Register of Historic Places in Pima, Arizona.
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