Nogales, AZ: ZIP 85628
Population: ~20,072 | Elevation: 3,829 ft | Distance from Tucson: ~60 miles south on I-19
About Nogales
Nogales sits at the southern end of Interstate 19 in Santa Cruz County, Arizona, at 3,829 feet above sea level. That elevation matters more than you might expect: while Tucson and Phoenix swelter through summer, Nogales enjoys cooler temperatures, monsoon rains in July and August, and the surrounding Coronado National Forest. The city shares its name with a larger sister city across the international boundary, Nogales, Sonora, and together they are known as Ambos Nogales, meaning simply "both Nogales" in Spanish.
The name has a straightforward origin. Black walnut trees (Juglans major) once grew thick in the mountain pass between the two cities. In Spanish, "nogales" means walnut trees. A U.S. Postal Service renaming in 1883 made it official, replacing the earlier name "Isaacson," which honored Russian-Jewish immigrant Jacob Isaacson. Isaacson established a trading post here in 1880, anticipating the arrival of the railroad. By 1882, the Atchison, Topeka and Santa Fe Railway had connected with the Sonoran Railway at this junction, creating an international rail link that would define the city's commercial character for generations.
The Gadsden Purchase of 1853 to 1854, which transferred 29,670 square miles from Mexico to the United States for $10 million, bisected the original mountain settlement into two separate nations. That split remains the defining fact of Nogales. The city incorporated in 1893, and by the early twentieth century it had become one of the most economically active border crossings on the continent.
What Makes Nogales Unique
The produce gateway for the nation. The Mariposa Port of Entry handles approximately 45 percent of all U.S. winter fresh produce consumption. The tomatoes, cucumbers, and peppers on a dinner table in January likely crossed through Nogales. About 375,000 commercial trucks pass through each year, and the port handles close to $20 billion in imports and exports annually.
$30 billion in annual cross-border trade. Nogales is Arizona's primary commercial port of entry and one of the most important trade corridors in North America. It serves as the southern anchor of the CANAMEX Corridor, the major trade route linking Canada, the United States, and Mexico.
Where the first permanent border wall was built. On August 27, 1918, a confrontation between U.S. Army forces and Mexican militia known as the Battle of Ambos Nogales ended with the construction of the first permanent physical barrier along International Street. That event transformed the relationship between the two Nogales cities permanently.
Birthplace of Charles Mingus. Jazz bassist, composer, and bandleader Charles Mingus was born in Nogales. The Pimeria Alta Historical Society holds an annual jazz festival in his memory.
The opening example in a bestselling economics book. The 2012 book "Why Nations Fail" by Daron Acemoglu and James Robinson opens with Nogales as its central case study, using the contrast between Nogales, AZ and Nogales, Sonora to illustrate how institutions shape economic prosperity. The comparison became one of the most cited examples in modern political economy.
Bob Baffert's hometown. The Triple Crown-winning horse trainer, whose horses won in 2015 and 2018, grew up in Nogales.
95.2 percent Hispanic or Latino. Nogales is one of the most Hispanic-majority cities in the United States, reflecting its deep cultural and economic integration with the broader border region.
Living in Nogales
More than 30,000 residents of Nogales, Sonora cross into Arizona to shop each day, and that flow accounts for more than 60 percent of the city's sales tax revenue. That cross-border economic relationship shapes daily life in concrete ways. The retail corridor along Grand Avenue and Morley Avenue serves both American residents and Mexican shoppers, creating a commercial environment unlike anywhere else in the country.
The elevation of 3,829 feet gives Nogales a climate clearly distinct from the rest of southern Arizona. Summers are warm but not extreme, and the July and August monsoon season brings rain that turns the surrounding hills green. Winters are mild, though noticeably cooler than Tucson to the north.
Housing in Nogales has historically been among the more affordable in Arizona. A new 32-home affordable housing development broke ground in February 2026 near North Loma Mariposa and is expected to be completed by June 2026, part of a city-driven effort to close housing supply gaps.
Things to Do
Pimeria Alta Historical Society Museum. Housed in the old 1914 Nogales City Hall and Fire Station, this museum covers local history with exhibits on the Buffalo Soldiers, rare murals, artifacts from Camp Little, and a dedicated section on Charles Mingus.
Santa Cruz County Courthouse (1904). This historic building on Morley Street contains a room on the second floor dedicated to the 1775 Juan Bautista de Anza Expedition, which passed through this exact mountain pass. The Lady Justice statue on the roof stands out for one reason: she is not wearing a blindfold, an unusual departure from tradition.
Crawford Hill and Marsh Heights Historic Districts. Both are listed on the National Register of Historic Places. The Crawford Hill district alone contains 216 buildings representing different eras of Nogales history.
Tumacacori National Historical Park. Located just north of Nogales on I-19, this site preserves Spanish colonial mission ruins first visited by Father Eusebio Kino in 1691. It is a National Monument and one of the oldest documented European sites in Arizona.
Patagonia-Sonoita Creek Sanctuary. About 19 miles east of Nogales, this sanctuary draws birdwatchers from across the world because of its exceptional range of avian species, including many that cross between Mexico and the U.S.
Sonoita-Elgin Wine Country. Along Route 82 roughly 20 miles east of Nogales, this emerging wine region has developed a small but serious cluster of wineries and tasting rooms worth a half-day visit.
Cross the border. Many visitors make a day trip into Nogales, Sonora for shopping, food, and a distinctly different atmosphere. La Roca restaurant in Nogales, Sonora is frequently cited as a standout destination.
Schools
ZIP 85628 is served by Nogales Unified School District (NUSD), which operates elementary, middle, and high schools across the Nogales area including Nogales High School. The district reflects the community's demographics, with strong bilingual programs and Spanish-language resources throughout. For higher education, Cochise College holds classes in the 1904 Santa Cruz County Courthouse building downtown. The University of Arizona campus in Tucson is about 60 miles north.
Local Insights
Nogales has been central to national debates about border policy and trade throughout 2025 and into 2026. DHS Secretary Kristi Noem announced new border wall and security measures in Nogales, developments that carry significant weight in a city where daily life depends on the smooth flow of people and goods across the international line.
Interstate 19, which ends at the border in Nogales, is one of the only U.S. highways still posted in kilometers. That is a holdover from a 1970s federal metrication experiment that was reversed almost everywhere else. The highway leads directly into Mexican Federal Highway 15 heading south to Hermosillo and eventually Mexico City.
Long before any of this, the Nogales mountain pass was a Native American travel and trade route. Juan Bautista de Anza led his 1775 to 1776 expedition into present-day U.S. territory through this pass, and Nogales today is part of the Juan Bautista de Anza National Historic Trail. El Camino Real, the Spanish colonial road connecting Guaymas to Tucson, also ran through here in the late 1660s. The layers of history in this pass stretch back centuries.
Explore the Nogales Community Board
Local businesses in Nogales can claim a spot on the community board for $1/month. Each listing creates a dedicated, Google-indexed webpage for your business with full LocalBusiness schema, the same structured data that helps you show up in ChatGPT, Perplexity, and Google AI Overviews.
