
Desert Laboratory · National Register of Historic Places
Tucson’s story
251 years in pictures
Desert Laboratory is one of 2 National Historic Landmarks here, the National Register’s top tier. Its founding year, 1775, is the earliest of any Arizona town we grade.
Census counts: 400 in 1850, 542,629 in 2020. The archive holds 17 old photos and papers going back to 1873 and 5 maps from 1948 on.
139 places on the National Register of Historic Places.
Explore the history →
Getting set upMoving to Tucson: who provides what
Who provides power, water and the rest in Tucson, and how to reach them.
The full setup list →EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
Questions about Tucson
Short answers, built from the data on this page.
Is Tucson, AZ a good place to live?
Tucson grades C− overall, better than 20% of U.S. towns and #108 of 139 in Arizona. It grades B− for health, D for safety and B for schools. Safety is its weak spot, with a D.
Is Tucson, AZ safe?
Tucson reports more crime per resident than 88% of U.S. towns, a D Safety Grade: 1,976 violent and 11,319 property crimes in 2025.
Is Tucson, AZ expensive?
That is 4.5 years of the area's median household income ($70,315 across the Tucson, AZ metro area). Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C.
What is Tucson, AZ known for?
36 notable people were born here, including Linda Ronstadt and Gabby Giffords.