Byron, California
Byron is a community of 1,837 people in Contra Costa County, California.
Why visit Byron
Townapedia lists 1 museum or landmark, 2 parks and trails and 3 places to eat in and around town.
July is the warmest month, with average highs of 93°F; December lows average 40°F.
Weather in Byron
Forecast from the National Weather Service. Full forecast
About Byron
Byron is a census designated place (CDP) in Contra Costa County, California, United States. As of the 2020 census, Byron had a population of 1,140.
From the Wikipedia article Byron, California (this version), under CC BY-SA 4.0.
Museums and landmarks1
Parks, trails and playgrounds2
Restaurants and cafes3
Shopping1
History
Byron's location was part of a land grant that Jose Noriega received from the King of Spain in 1835. Noriega then sold 17,000 acres to John Marsh for the equivalent of $500 (three U.S. cents per acre). In 1841, the Bidwell-Bartelson wagon train arrived at Marsh's ranch with the earliest Anglo settlers from the east.
Byron's first post office opened in 1878. Byron is named after an employee of the San Pablo, and the eastern U. S. and Pacific Railroad.
In 1942, all of the town's residents of Japanese descent were forcibly removed by the US government with pressure from California agricultural interests and taken to Turlock assembly center.
In 1960, Contra Costa County built the Orin Allen Youth Rehabilitation Center, better known informally as the Boys' Ranch on a 50 acres (200,000 m2) tract immediately southeast of Byron. The Boys' Ranch is a minimum-security facility that houses up to 100 youthful offenders. The property has no security fence to contain residents within the perimeter and includes dormitories, classrooms, a kitchen and dining facility, athletic facilities and administrative offices which occupy about one-third of the area. Its objective was stated as rehabilitation, rather than simply detention.
From the History section of Byron, California on Wikipedia, under CC BY-SA 4.0.
Gas and EV charging1
Schools, colleges and libraries15
Byron Institute For Independent Study
School · 2.5 mi
40 Newbury Ln., Discovery Bay
Healthcare1
Map of Byron
24 places. The map loads OpenStreetMap tiles when you open it.
Climate by month
Monthly table
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| Jan | 56°F | 40°F | 2.5 in | 0.0 in |
| Feb | 62°F | 44°F | 2.3 in | 0.0 in |
| Mar | 67°F | 47°F | 1.6 in | 0.0 in |
| Apr | 73°F | 50°F | 0.8 in | 0.0 in |
| May | 80°F | 55°F | 0.5 in | 0.0 in |
| Jun | 88°F | 59°F | 0.1 in | 0.0 in |
| Jul | 93°F | 62°F | 0.0 in | 0.0 in |
| Aug | 92°F | 62°F | 0.0 in | 0.0 in |
| Sep | 89°F | 60°F | 0.1 in | 0.0 in |
| Oct | 79°F | 54°F | 0.7 in | 0.0 in |
| Nov | 66°F | 46°F | 1.3 in | 0.0 in |
| Dec | 57°F | 40°F | 2.4 in | 0.0 in |
U.S. Climate Normals 1991-2020 for Tracy Pumping Plt (6 mi away), NOAA NCEI.
People and cost of living
American Community Survey 5-year estimates, 2020-2024, U.S. Census Bureau. Estimates have margins of error, larger for small towns.
Disaster history
Contra Costa County has had 9 federal disaster declarations since 2000, most often for floods.
- 2023-01-14: Severe Winter Storms, Flooding, Landslides, And Mudslides (Flood)
- 2023-01-09: Severe Winter Storms, Flooding, And Mudslides (Flood)
- 2020-03-22: Covid-19 Pandemic (Biological)
- 2020-03-13: Covid-19 (Biological)
- 2017-04-01: Severe Winter Storms, Flooding, And Mudslides (Flood)
- 2017-03-16: Severe Winter Storms, Flooding, And Mudslides (Flood)
OpenFEMA disaster declarations summaries.
Getting there and nearby towns
Livermore Municipal Airport (LVK) is the nearest airport with scheduled flights listed in OpenStreetMap, 16 miles away.
- Discovery Bay 3 mi northeast, about 5 min by car
- Brentwood 6 mi northwest, about 9 min by car
- Oakley 9 mi north, about 14 min by car
- Mountain House 9 mi southeast, about 14 min by car
- Antioch 11 mi northwest, about 18 min by car
- Bethel Island 11 mi north, about 17 min by car
- Tracy 15 mi southeast, about 23 min by car
- Livermore 15 mi southwest, about 23 min by car
- Pittsburg 17 mi northwest, about 28 min by car
- San Ramon 17 mi southwest, about 28 min by car
Drive times are estimates from straight-line distance, not routes.
Local news
Headlines from INDB, the NEMICO news database.
Reviews, tips and questions
Loading what members have shared...
Sources and licences
- NCES EDGE (Public domain): public schools
- NOAA NCEI U.S. Climate Normals 1991-2020 (Public domain): climate by month
- OpenFEMA (Public domain): disaster declarations
- OpenStreetMap contributors (ODbL 1.0): places, airports, map data
- U.S. Census Bureau (Public domain): population, income, housing, education, commute
- Wikidata (CC0 1.0): elevation, founding date, time zone, website
- Wikimedia Commons (see each image): photos
- Wikipedia (CC BY-SA 4.0): overview and history text
Photo credits
- Byron Main Street 003, Captndelta, CC BY-SA 3.0
- Byron Main Street 002, Captndelta, CC BY-SA 3.0
- Byron Main Street 001, Captndelta, CC BY-SA 3.0
- Byron Hot Springs 029, Captndelta, CC BY-SA 3.0
- Byron Hot Springs 034, Captndelta, CC BY-SA 3.0
- Byron Hot Springs 030, Captndelta, CC BY-SA 3.0
- Byron Hot Springs 020, Captndelta, CC BY-SA 3.0
- Byron Hot Springs 025, Captndelta, CC BY-SA 3.0
- Byron Hot Springs 024, Captndelta, CC BY-SA 3.0
- Short SC.7 N101UV (4815330559), Bill Larkins, CC BY-SA 2.0
- Near Stockton, California - Flickr - brewbooks, brewbooks from near Seattle, USA, CC BY-SA 2.0
- Hairy vetch cover crop, Cassiville, CC BY-SA 4.0
- Barley cover crop in field, Cassiville, CC BY-SA 4.0
- San Joaquin Valley - Flickr - brewbooks (2), brewbooks from near Seattle, USA, CC BY-SA 2.0
Page built October 30, 2026. Spotted a mistake? Tell us or suggest a place.