San Luis Obispo dates to 1772, and 9 of its places are on the National Register
More historic than 86% of U.S. towns · #17 of 847 in California. What drives it
Most of San Luis Obispo was built recently: 9% of its homes predate 1940 and the median home dates from 1977. Below: 6 old photos and papers, maps from 1886 on, and the census since 1880.
Founding year: Wikidata; Wikipedia’s history section gives the same year. First post office: 1851.The full story ↓
History grade
What drives San Luis Obispo’s History grade
On its age, its old homes and the National Register, San Luis Obispo is more historic than 86% of U.S. towns, #17 of 847 in California. Its age holds the grade up; its share of homes from before 1940 pulls it down.
A
HistoryA character grade: shown, never part of San Luis Obispo’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 San Luis Obispo’s 2.1 sits above most of its state (81% of California towns have fewer) while its 10 historic buildings outnumber those of 76% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B+ to A+. The pre-1940 share (±1.5 points) is firm at this size. Two sources give 1772.
Founding year: Wikidata (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 San Luis Obispo’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 San Luis Obispo. Tap a year, or press play to watch the town change.
1897San Luis Obispo 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 San Luis Obispo.
Every building
San Luis Obispo, building by building, 1886–1909
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
The earliest human inhabitants of the local area were the Chumash people. One of the earliest villages lies south of San Luis Obispo and reflects the landscape of the early Holocene when estuaries came farther inland. The Chumash people used marine resources of the inlets and bays along the Central Coast and inhabited a network of villages, including sites at Los Osos and Morro Creek. The tribal site on present-day San Luis Obispo was named tiłhini (Obispeño for 'Place of the full moon').
Passages that mention San Luis Obispo, cut from the printed page as they were published.
History of the state of California and biographical record of Santa Cruz, San Benito, Monterey and San Luis Obispo counties1903Read the page →
Read the text
Included in his possessions is a small place just outside of the city of San Luis Obispo. At the organization of the Commercial Bank of San Luis Obispo he was one of those who bore a part in its establishment, and since 1898 he has been a member of its board of directors. Politparty. On one occasion he served as clerk of the election board. He is especially interested
Text read by machine from the scan; it may contain errors.
History of Santa Barbara, San Luis Obispo and Ventura counties, California1917 · page 646Read the page →
Read the text
farming, having done a good deal of carpenter work in and near Ballard, and likewise having worked in the asphalt mines in Sisquoc, where he met with a bad accident, his hip being seriously injured. In 1887 he preempted 160 acres of land in San Luis Obispo County, near Shandon, and about thirty-five miles from the Town of San Luis Obispo. This land is now under cultivation, and is leased to a man who raises grain, his main crop being wheat.
Text read by machine from the scan; it may contain errors.
History of the state of California and biographical record of Santa Cruz, San Benito, Monterey and San Luis Obispo counties1903Read the page →
Read the text
toms for the port of Monterey, having charge of the coast to the south. While filling the latter position, he took advantage of favorable openings for investments in San Luis Obispo county and purchased large tracts of land. In 1856 he settled permanently in San Luis Obispo county, where he has since managed his real-estate in- Some frame buildings that he erected
Text read by machine from the scan; it may contain errors.
A memorial and biographical history of the counties of Santa Barbara, San Luis Obispo and Ventura, California ... Containing a history of this important section of the Pacific coast from the earliest period of its occupancy to the present time, together w1891 · page 147Read the page →
Read the text
In February, 1871, the town authorities received from the United States Land Office a certificate of purchase for the town site of the town of San Luis Obispo, covering the following tracts of the United States land survey: being parts of sections 26, 27, 34 and 35 in township 30 south; range 12 east of Mount Diablo, base and meridian containing
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
San Luis Obispo, 1772 to 1987
Woven from the archive, old maps, post office records, the National Register and the people born here.
In 1772, according to Wikidata and Wikipedia’s history of the town. San Luis Obispo’s post office opened in 1851, and the census of 1880 counted 2,243 people here.
How does San Luis Obispo rank for history?
San Luis Obispo is more historic than 86% of U.S. towns, #17 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.
What is on the National Register in San Luis Obispo?
9 listings: 9 buildings, among them the Myron Angel House (listed 1982, the first). 10 historic buildings in all.
How old are the homes in San Luis Obispo?
9% of San Luis Obispo’s homes were built before 1940 (Census estimate, ±1.5 points), against a typical 3.4% for a California town; the median home was built in 1977.
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), the National Register of Historic Places (9), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System, Sanborn fire insurance maps (Library of Congress) and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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