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CHistory
History · Sunnyvale

Sunnyvale’s post office opened in 1901, and 1 of its places is on the National Register

More historic than 29% of U.S. towns · #350 of 847 in California. What drives it

Most of Sunnyvale was built recently: 2% of its homes predate 1940 and the median home dates from 1976. 1 place in town is on the National Register, among them a historic district with 40 buildings. Below: maps from 1897 on and the census since 1930.

1901first post office
1on the National Register
2%homes built before 1940
15famous people
Add an old photoShare a memory
Photo: The Sands of Time 0 · CC BY-SA 4.0
Quick answers

How Sunnyvale began

When was Sunnyvale founded?

1901

The Sunnyvale post office opened in 1901, the earliest record of the town by name. Another post office, Encinal (1897), opened inside today’s city and later closed.

First census: 3,094 in 19302020 census: 155,805125 years

How historic is Sunnyvale?

C

More historic than 29% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: the first Sunnyvale post office (Blevins & Helbock, CC0).The full story ↓
History grade

What drives Sunnyvale’s History grade

On its age, its old homes and the National Register, Sunnyvale is more historic than 29% of U.S. towns, #350 of 847 in California. Its National Register listings hold the grade up; its age pulls it down.

C
HistoryA character grade: shown, never part of Sunnyvale’s overall grade.
Founding era1901, from the first post office: founded 1900–1944, an older era than 9% of U.S. townsDHomes built before 19401.5% of homes (±0.4) · typical CA town 3.4% · U.S. 8.4%C−National Register1 listing, 40 historic buildings, 2.6 per 10,000 residents · typical CA town 0.0 · U.S. 2.4A−
All U.S. towns we grade (21,289)Ahead of 29%
NewerOlder
California towns of 2,500+ (847)Ahead of 59%

Among the 400 U.S. cities of 100,000 or more, Sunnyvale ranks #313 on History.

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 Sunnyvale’s 2.6 sits above most of its state (83% of California towns have fewer) while its 40 historic buildings outnumber those of 83% of U.S. towns.

Newer cities are common at Sunnyvale’s size: in the typical U.S. city of 100,000 or more, 5% of homes predate 1940.

How sure. Graded on any two of the three inputs instead, the letter would range from D to B−. The pre-1940 share (±0.4 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 Sunnyvale’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

Lost villages1 post office opened and closed inside today’s Sunnyvale, and 15 old place names are still on the map.A history waiting to be writtenNo old photos of Sunnyvale are in the public archives yet. The rest are in attics and albums.On the map since 18977 editions of the USGS map, 1897 to 1991. Watch Sunnyvale change.A historic districtThe US Naval Air Station Sunnyvale, California, Historic District takes in 40 historic buildings.
★ What stands out · Places that used to be

Lost post offices, old corners and places now gone

Sunnyvale’s post office has been open since 1901. Another post office, Encinal, opened and closed inside today’s town.

Encinal
1897–1901
Sunnyvale
1901–today
18901960today
Hamlets and corners on the map
Adobe Wells Mobile Home ParkAloha Mobile VillageCape Cod Village Mobile Home ParkCasa Amigo Mobile Home ParkEl Dorado Mobile Home ParkFairoaks Mobile Home ParkFox Hollow Mobile Home ParkGarcia Avenue Mobile Home ParkMary Manor Mobile EstatesMobiland Manor Mobile Home ParkMoffett Trailer VillagePlaza del Rey Mobile Home ParkRanchero Thunderbird Mobile Home CourtRancho la Mesa Mobile Home CourtWillow Ranch Mobile Home Park
Gone or out of use
Adair Elementary SchoolschoolBenner Junior High SchoolschoolPanama SchoolschoolPatrick Henry SchoolschoolPippin Elementary SchoolschoolSunnyvale Ordnance Depotmilitary

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Help out

Start Sunnyvale’s collection

The first neighbors to add old photos shape how Sunnyvale’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Share a family photoSign in to add one+10
On the map

Sunnyvale on the map, 1897 to 1991

Every edition of the U.S. Geological Survey’s map of Sunnyvale. Tap a year, or press play to watch the town change.

Sunnyvale on the 1897 USGS mapSunnyvale on the 1943 USGS mapSunnyvale on the 1953 USGS mapSunnyvale on the 1961 USGS mapSunnyvale on the 1973 USGS mapSunnyvale on the 1980 USGS mapSunnyvale on the 1991 USGS map1897Palo Alto 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 Sunnyvale.

The story

How Sunnyvale came to be

From Wikipedia’s history of Sunnyvale.

Read it all →

The Santa Clara Valley was heavily populated by the indigenous Ohlone people when the Spanish first arrived in the 1770s. After the Spaniards arrived, smallpox, measles, and other Old World diseases greatly reduced the Ohlone population. Many the Ohlone Native Americans who did not die of these diseases were forced into Christian faith by the Spanish. In 1777, Franciscan missionary Padre Junipero Serra founded Mission Santa Clara in San Jose (near what is now the San Jose International Airport runway).

Chapters1800s1900s2000s

Text from Wikipedia, licensed CC BY-SA 4.0.

From the old history books

What they wrote about Sunnyvale in 1922

Passages that mention Sunnyvale, cut from the printed page as they were published.

In 1900 Mr. Spalding came to Sunnyvale, arriving here at an early period in its development, and he has since laid out several additions to the town.
History of Santa Clara County California1922 · page 380Read the page →
Read the text

In 1900 Mr. Spalding came to Sunnyvale, arriving here at an early period in its development, and he has since laid out several additions to the town.

Text read by machine from the scan; it may contain errors.
public school and from a lad he had assisted his father and became familiar with the science of orcharding. In 1902 he started a wood and fuel business in Sunnyvale, calling it the Sunnyvale Fuel Company, and had built up a substantial business when he sold out in 1910. Next he located in Indian Va…
History of Santa Clara County California1922 · page 1269Read the page →
Read the text

public school and from a lad he had assisted his father and became familiar with the science of orcharding. In 1902 he started a wood and fuel business in Sunnyvale, calling it the Sunnyvale Fuel Company, and had built up a substantial business when he sold out in 1910. Next he located in Indian Valley, Monterey County, being engaged in cattle raising until 1915, when he sold his cattle interests

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

Sunnyvale, 1897 to 2003

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1897Post officeThe Encinal post office opens
  3. 1897On the mapFirst mapped by the U.S. Geological Survey
  4. 20th century
  5. 1901Post officeThe Encinal post office closes
  6. 1901Post officeThe Sunnyvale post office opens
  7. 1945Born hereBruce Wilhelm is born here
  8. 1976Born hereCamille Guaty is born here
  9. 1990Born hereEvan Marshall is born here
  10. 21st century
  11. 2003Born hereDiego Luna is born here
By decade

Sunnyvale, decade by decade

Today26 recent
VaughnHoglanOD-WElCaminoReal-SunnyvaleCA-2026-06-192026VaughnHoglanOD-WElCaminoReal-SunnyvaleCA-2026-06-19VTABusStop-Route53-SBernardoAve-SunnyvaleCA-2026-06-192026VTABusStop-Route53-SBernardoAve-SunnyvaleCA-2026-06-19TheUPSStore-WElCaminoReal-SunnyvaleCA-2026-06-192026TheUPSStore-WElCaminoReal-SunnyvaleCA-2026-06-19StateBankOfIndiaCalifornia-WElCaminoReal-SunnyvaleCA-2026-06-192026StateBankOfIndiaCalifornia-WElCaminoReal-SunnyvaleCA-…SliceOfHomage-WElCaminoReal-SunnyvaleCA-2026-06-192026SliceOfHomage-WElCaminoReal-SunnyvaleCA-2026-06-19SatkarIndianCuisine-WElCaminoReal-SunnyvaleCA-2026-06-192026SatkarIndianCuisine-WElCaminoReal-SunnyvaleCA-2026-06…PhillipThaiDDS-WElCaminoReal-SunnyvaleCA-2026-06-192026PhillipThaiDDS-WElCaminoReal-SunnyvaleCA-2026-06-19MagikidAIRoboticsLab-WElCaminoReal-SunnyvaleCA-2026-06-192026MagikidAIRoboticsLab-WElCaminoReal-SunnyvaleCA-2026-0…Kumon-WElCaminoReal-SunnyvaleCA-2026-06-192026Kumon-WElCaminoReal-SunnyvaleCA-2026-06-19IkesLoveAndSandwiches-WElCaminoReal-SunnyvaleCA-2026-06-192026IkesLoveAndSandwiches-WElCaminoReal-SunnyvaleCA-2026-…HillAndCoRealtors-SBernardoAve-SunnyvaleCA-2026-06-192026HillAndCoRealtors-SBernardoAve-SunnyvaleCA-2026-06-19ExpertHairDo-WElCaminoReal-SunnyvaleCA-2026-06-192026ExpertHairDo-WElCaminoReal-SunnyvaleCA-2026-06-19DeccanMorsels-WElCaminoReal-SunnyvaleCA-2026-06-192026DeccanMorsels-WElCaminoReal-SunnyvaleCA-2026-06-19CherryChaseTaxAndAccounting-SBernardoAve-SunnyvaleCA-2026-06-192026CherryChaseTaxAndAccounting-SBernardoAve-SunnyvaleCA-…ChaseBank-WElCaminoReal-SunnyvaleCA-2026-06-192026ChaseBank-WElCaminoReal-SunnyvaleCA-2026-06-19CaminoPediatricDentistry-SBernardoAve-SunnyvaleCA-2026-06-192026CaminoPediatricDentistry-SBernardoAve-SunnyvaleCA-202…CaliforniaDentalWellness-WElCaminoReal-SunnyvaleCA-2026-06-192026CaliforniaDentalWellness-WElCaminoReal-SunnyvaleCA-20…BevMo-WElCaminoReal-SunnyvaleCA-2026-06-192026BevMo-WElCaminoReal-SunnyvaleCA-2026-06-19BTDental-SBernardoAve-SunnyvaleCA-2026-06-192026BTDental-SBernardoAve-SunnyvaleCA-2026-06-19Arbys-SBernardoAve-SunnyvaleCA-2026-06-192026Arbys-SBernardoAve-SunnyvaleCA-2026-06-19Historic Murphy Avenue, Sunnyvale (May 2025)2025Historic Murphy Avenue, Sunnyvale (May 2025)Historic Murphy Avenue, Sunnyvale (May 2025) (cropped)2025Historic Murphy Avenue, Sunnyvale (May 2025) (cropped)Caterpillar 815F soil compactor on site in Sunnyvale, facing right2020Caterpillar 815F soil compactor on site in Sunnyvale,…Caterpillar 815F soil compactor on site in Sunnyvale, facing left2020Caterpillar 815F soil compactor on site in Sunnyvale,…Fountain and the running man2017Fountain and the running manMountain View Alviso Road sign 12522012Mountain View Alviso Road sign 1252
Every building

Sunnyvale, building by building, 1908–1930

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.

Sunnyvale fire insurance map, 1908, sheet 11908Sheet 1 of 5
Edition
BrickWoodStone

Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.

On the National Register

1 listing protects 40 historic buildings

The country’s official list of buildings and places worth saving.

place listed
1
National Historic Landmarks
0
none yet
historic buildings protected
40
each building in a district counts
first listed
1994
US Naval Air Station Sunnyvale, California, His…
US Naval Air Station Sunnyvale, California, Historic District
Districts

Architectural styles listings

Late 19th and 20th Century Revivals1
Mission/Spanish Colonial Revival1
Other: Dirigible Hangar, World War II Blimp Hangar1
All 1 listings
US Naval Air Station Sunnyvale, California, Historic DistrictDistrict · listed 1994

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

People over time

Sunnyvale, census by census

020,00040,00060,00080,000100,000120,000140,000160,00019401960198020002020155,805

Grew from 3,094 people in 1930 to 155,805 in 2020, more than tenfold.

10 censuses, 1930–2020.

U.S. Census Bureau decennial counts, from the census table on Sunnyvale’s Wikipedia page.

Famous people

15 famous people were born in Sunnyvale

Writers, athletes, leaders and more, ranked by how widely they’re known.

See all →
Camille GuatyAmerican actress · b. 1976
Diego LunaAmerican soccer player · b. 2003
B
Bruce WilhelmAmerican strongman · b. 1945
Evan MarshallAmerican baseball player · b. 1990
J
Joe PruntyAmerican basketball player and coach · b. 1969
M
Mark KvammeAmerican venture capitalist · b. 1961
Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Cupertino3 historic placesC+Mountain View2 historic placesC+Santa Clara7 historic placesB+Los Altos1 historic placeC−San Jose35 historic placesA−Fremont5 historic placesC−

Questions about Sunnyvale’s history

What year was Sunnyvale founded?

The Sunnyvale post office opened in 1901, the earliest record of the town by name (U.S. post office records).

How does Sunnyvale rank for history?

Sunnyvale is more historic than 29% of U.S. towns, #350 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 Sunnyvale?

One place: the US Naval Air Station Sunnyvale, California, Historic District (listed 1994).

How old are the homes in Sunnyvale?

2% of Sunnyvale’s homes were built before 1940 (Census estimate), against a typical 3.4% for a California town; the median home was built in 1976.

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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 (26), the National Register of Historic Places (1), 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.