Most of Tubac was built recently: 0.0% of its homes predate 1940 and the median home dates from 1999. 3 places in town are on the National Register, among them a historic district with 21 buildings. Below: 1 old photo or paper, maps from 1939 on, and the census since 2000.
Founding year: the first Tubac post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Tubac’s History grade
On its age, its old homes and the National Register, Tubac is more historic than 38% of U.S. towns. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
C+
HistoryA character grade: shown, never part of Tubac’s overall grade.
Few Arizona towns list much on the Register (a typical Arizona town has 0.1 per 10,000 residents, the U.S. 2.4), so Tubac’s 170 sits above most of its state (96% of Arizona towns have fewer) while its 22 historic buildings outnumber those of 80% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D to B+. The pre-1940 share (±1.3 points) is firm at this size. The founding year is the first post office, not a stated founding date.
Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Tubac’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Established in 1752 as a Spanish presidio, the first Spanish colonial garrison in what is now Arizona, Tubac was one of the stops on the Camino Real (the "Royal Road") from Mexico to the Spanish settlements in California.
Tubac's most famous Spanish resident was Juan Bautista de Anza. While stationed at Tubac (1760–1776), de Anza built the chapel of Santa Gertrudis, the foundations of which lie beneath today's St. Ann's Church.
Apaches attacked the town repeatedly in the 1840s, forcing the Sonoran Mexicans to abandon both Tumacacori and Tubac.
Tubac was the scene of a four-day siege in 1861 among the population of Tubac, Confederate militia, and Apache warriors.
The Tubac post office opened in 1859, the earliest record of the town by name (U.S. post office records).
How does Tubac rank for history?
Tubac is more historic than 38% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
What is on the National Register in Tubac?
Three places: the Old Tubac Schoolhouse (listed 1970), the Tubac Presidio (1970) and the Tubac Townsite Historic District (1994).
How old are the homes in Tubac?
0.0% of Tubac’s homes were built before 1940 (Census estimate, ±1.3 points), against a typical 0.4% for an Arizona town; the median home was built in 1999.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (10), the Library of Congress (1), the National Register of Historic Places (3), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.