Atwater’s post office opened in 1880, and 1 of its places is on the National Register
More historic than 30% of U.S. towns · #334 of 847 in California. What drives it
Most of Atwater was built recently: 2% of its homes predate 1940 and the median home dates from 1982. Its Register listing is the Bloss Mansion. Below: 2 old photos and papers, maps from 1914 on, and the census since 1930.
Founding year: the first Atwater post office (Blevins & Helbock, CC0). Wikidata: 1922.The full story ↓
History grade
What drives Atwater’s History grade
On its age, its old homes and the National Register, Atwater is more historic than 30% of U.S. towns, #334 of 847 in California. 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 Atwater’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 Atwater’s 0.3 sits above most of its state (67% of California towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to C+. The pre-1940 share (±0.8 points) is firm at this size. The founding year is the first post office, not a stated founding date; Wikidata gives 1922.
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 Atwater’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The railroad reached Atwater in the 1870s, and a town grew around it. The first post office opened in 1880. Atwater incorporated in 1922. The name honors Marshall D. Atwater, a wheat farmer whose land was used by the railroad for its station.
North of the town is the site of Castle Air Force Base, the former World War II Merced Army Airfield. Castle was selected for closure under the 1991 Base Realignment and Closure Commission and the base closed September 30, 1995. The site is now a public airport.
On May 15, 2020, Atwater declared itself a business "sanctuary city" during the coronavirus pandemic.
Passages that mention Atwater, cut from the printed page as they were published.
A history of Merced County, California1925 · page 740Read the page →
Read the text
line of work. Among the bridges and buildings he has built are the Santa Rita Slough bridge, built in 1915; the Los Banos Creek bridge over Los Banos Creek, in 1916; the bridge across the Livingston Canal above Atwater; bridges across the double canals on Pacheco Pass lateral; and he has done bridge work all over the San Joaquin Valley. Buildings which stand to his credit are the Medlin block, the Odd Fellows Hall block, the Du Bois block, the George Nickel home and tank house on the Delta Ranch. He built the Dos Palos Public
Text read by machine from the scan; it may contain errors.
A history of Merced County, California1925 · page 368Read the page →
Read the text
The Fin de Siecle Investment Company's Addition to the Town of Atwater, five blocks long by half a block deep, on the north side of the railroad, was made about 1899. Mr. Bloss bought 36 acres of acreage and twenty lots 25 by 115 feet each, from the Fin de Siecle Company, and from this he has made three additions to the town as its growth warranted it. The first was made in 1904 or 1905, the last in 1921. The Sierra Vista Company have also made three additions. J. B. Osborn bought out John Giddings, the keeper
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
Atwater, 1880 to 1987
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
The Atwater post office opened in 1880, the earliest record of the town by name (U.S. post office records). Wikidata gives 1922.
How does Atwater rank for history?
Atwater is more historic than 30% of U.S. towns, #334 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 Atwater?
One place: the Bloss Mansion (listed 1981).
How old are the homes in Atwater?
2% of Atwater’s homes were built before 1940 (Census estimate), against a typical 3.4% for a California town; the median home was built in 1982.
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 (1), Wikipedia, 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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