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Byron, California facts for kids

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Byron sign
Byron sign
Location in Contra Costa County and the state of California
Location in Contra Costa County and the state of California
Byron is located in the United States
Location in the United States
Country  United States
State  California
County Contra Costa
 • Total 6.52 sq mi (16.89 km2)
 • Land 6.52 sq mi (16.89 km2)
 • Water 0.00 sq mi (0.00 km2)  0%
33 ft (10 m)
 • Total 1,140
 • Density 174.82/sq mi (67.50/km2)
Time zone UTC-8 (Pacific)
 • Summer (DST) UTC-7 (PDT)
ZIP code
Area code 925
FIPS code 06-09346
GNIS feature IDs 238290, 2407934

Byron is a census designated place (CDP) in Contra Costa County, California, United States.


According to the United States Census Bureau, the CDP has a total area of 6.5 square miles (17 km2), all of it land. It is located 5.5 miles (9 km) southeast of Brentwood.


This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F. Byron is windy, and dust devils sometimes appear. According to the Köppen Climate Classification system, Byron has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.


Byron's first post office opened in 1878. Byron is named after an employee of the railroad.

Byron, California. Farm families of Japanese ancestry boarding buses for Turlock Assembly center 65 . . . - NARA - 537458
Families of Japanese ancestry being removed from Byron, California during World War II.

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.


Historical population
Census Pop.
2020 1,140
U.S. Decennial Census


At the 2010 census Byron had a population of 1,277. The population density was 196.8 people per square mile (76.0/km2). The racial makeup of Byron was 911 (71.3%) White, 61 (4.8%) African American, 11 (0.9%) Native American, 4 (0.3%) Asian, 11 (0.9%) Pacific Islander, 224 (17.5%) from other races, and 55 (4.3%) from two or more races. Hispanic or Latino of any race were 503 people (39.4%).

The census reported that 1,177 people (92.2% of the population) lived in households, no one lived in non-institutionalized group quarters and 100 (7.8%) were institutionalized.

There were 389 households, 171 (44.0%) had children under the age of 18 living in them, 229 (58.9%) were opposite-sex married couples living together, 37 (9.5%) had a female householder with no husband present, 27 (6.9%) had a male householder with no wife present. There were 25 (6.4%) unmarried opposite-sex partnerships, and 3 (0.8%) same-sex married couples or partnerships. 76 households (19.5%) were one person and 25 (6.4%) had someone living alone who was 65 or older. The average household size was 3.03. There were 293 families (75.3% of households); the average family size was 3.50.

The age distribution was 405 people (31.7%) under the age of 18, 136 people (10.6%) aged 18 to 24, 306 people (24.0%) aged 25 to 44, 312 people (24.4%) aged 45 to 64, and 118 people (9.2%) who were 65 or older. The median age was 32.0 years. For every 100 females, there were 112.8 males. For every 100 females age 18 and over, there were 106.6 males.

There were 415 housing units at an average density of 64.0 per square mile (24.7/km2),of which 389 were occupied, 254 (65.3%) by the owners and 135 (34.7%) by renters. The homeowner vacancy rate was 3.0%; the rental vacancy rate was 3.6%. 759 people (59.4% of the population) lived in owner-occupied housing units and 418 people (32.7%) lived in rental housing units.


At the 2000 census there were 916 people, 286 households, and 203 families in the CDP. The population density was 360.1 people per square mile (139.2/km2). There were 309 housing units at an average density of 121.5 per square mile (47.0/km2). The ethnic makeup of the CDP was 75.00% White, 4.37% Black or African American, 1.09% Native American, 2.18% Asian, 0.44% Pacific Islander, 14.74% from other races, and 2.18% from two or more races. 25.87% of the population were Hispanic or Latino of any race.

Of the 286 households 36.4% had children under the age of 18 living with them, 53.8% were married couples living together, 11.5% had a female householder with no husband present, and 28.7% were non-families. 22.0% of households were one person and 9.8% were one person aged 65 or older. The average household size was 2.85 and the average family size was 3.36.

The age distribution was 35.0% under the age of 18, 9.1% from 18 to 24, 28.2% from 25 to 44, 18.8% from 45 to 64, and 9.0% 65 or older. The median age was 31 years. For every 100 females, there were 129.0 males. For every 100 females age 18 and over, there were 105.2 males.

The median household income was $35,938 and the median family income was $44,306. Males had a median income of $42,639 versus $28,889 for females. The per capita income for the CDP was $21,231. About 15.6% of families and 14.9% of the population were below the poverty line, including 33.3% of those under age 18 and none of those age 65 or over.

Byron Hot Springs

37°50′54″N 121°38′00″W / 37.84833°N 121.63333°W / 37.84833; -121.63333
Byron, California is also home to the somewhat well-known and historical Byron Hot Springs, a now-abandoned resort that was a retreat that attracted many movie stars and famous athletes in the early 1900s. The first hotel was built in 1889 and was a three-story wood building, with a few cottages scattered nearby, as well as a laundry, gas plant and ice plant, all of which were destroyed by fire on July 25, 1901. A second hotel, also three stories, but made of stucco was constructed 1901-1902, but it burned on July 18, 1912. The third and final hotel, a four-story brick structure was built in 1913 and still stands.

In 1938 the resort closed, after a series of lawsuits that were probably brought about by the Great Depression, but was leased by the government in 1941 and became a military interrogation camp housing both German and Japanese prisoners of war, known as Camp Tracy, until 1945, when orders were sent to dismantle it. Additional information about its usage during World War II can be found in the book, The History of Camp Tracy: Japanese WWII POWs and the Future of Strategic Interrogation.

In 1947 the Byron Hot Springs property was put up for sale and purchased by the Greek Orthodox Church for a sum of $105,000. It served as the Monastery St. Paul for several years. It then changed hands several times as a resort, country club and private residence. It is currently privately owned by a developer who hopes to begin restoring the resort in early 2009, but the property is now in a state of disrepair. Plans for the restoration of Byron Hot Springs are outlined at

In 2005, a Victorian-era carriage house on the property was burned to the ground. The hotel itself sustained some fire damage, but still stands.

The site has most recently attracted graffiti artists, urban explorers, and photographers. The site has notably been used as the set of national Bay Area rap artist Mars for various projects including his Zodiac Tour commercial, and an interview with Insane Clown Posse on their Weekly Freakly Weekly internet news show. DJ Clay, who is also the DJ for Insane Clown Posse, shot parts of his music video for his single "Pen & Paper" here.

Byron Hot Springs is located 1.5 miles (2.4 km) south-southeast of Byron. A post office operated at Byron Hot Springs from 1889 to 1930.


Byron Airport

In 1993 Contra Costa County broke ground on a new airport two miles (3 km) south of Byron. On October 8, 1994, Byron Airport was dedicated. The new airport has 1,307 acres (5.29 km2) of land. 814 acres (3.29 km2) are reserved for habitat management land for the San Joaquin kit fox, a federally listed endangered species, as well as many other endangered and special status species.

This is the home airport of the Patriots Jet Team. It has also been used for illegal drag races in the past.


There is limited bus service to Byron by Tri-Delta Transit's route 386, which connects the community and Discovery Bay with the Brentwood Park and Ride Lot where passengers may transfer to buses connecting to other cities in the region.

Images for kids

See also

Kids robot.svg In Spanish: Byron (California) para niños

National Hispanic Heritage Month on Kiddle
Notable Hispanic writers
Marie Arana
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Sergio Troncoso
Nina Serrano
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