Grand Terrace was first counted by the census in 1970
More historic than 2% of U.S. towns · #838 of 847 in California. What drives it
Most of Grand Terrace was built recently: 0.2% of its homes predate 1940 and the median home dates from 1978. Below: maps from 1896 on and the census since 1970.
On its age, its old homes and the National Register, Grand Terrace is more historic than 2% of U.S. towns, #838 of 847 in California. Its National Register listings hold the grade up; its age pulls it down.
D−
HistoryA character grade: shown, never part of Grand Terrace’s overall grade.
Few California towns list much on the Register (a typical California town has 0.0 per 10,000 residents, the U.S. 2.4), so Grand Terrace’s 0.0 sits below most of its state (31% of California towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D− to D. The pre-1940 share (±0.3 points) is firm at this size.
Founding year: the first census (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 Grand Terrace’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Grand Terrace. Tap a year, or press play to watch the town change.
1896San Bernardino sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Grand Terrace.
Grand Terrace's roots go back to Mexican land grants dating from the period between 1830 and 1840. Mormon settlers came shortly after, arriving in the San Bernardino Valley, during the 1850s. According to the Riverside Press, in 1876, there were nine buildings in the Terrace-Colton area. Originally, the area was simply referred to as "the Terrace", but the word "Grand" was added around 1898 due to the beautiful views which surround the city. In 1905, Seventh-day Adventists, whose medical university is now located in nearby Loma Linda, settled in the area. Grand Terrace, at the time known as "South Colton", experienced continued growth and development during the Southern California suburbia and sunbelt periods in the late half of the 20th century.
The Grand Terrace post office opened in 1970, the earliest record of the town by name (U.S. post office records).
How does Grand Terrace rank for history?
Grand Terrace is more historic than 2% of U.S. towns, #838 of 847 in California. 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.
How old are the homes in Grand Terrace?
0.2% of Grand Terrace’s homes were built before 1940 (Census estimate), against a typical 3.4% for a California town; the median home was built in 1978.
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 (6), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.