Townapedia

Bethel Island, California

Bethel Island is a community of 1,864 people in Contra Costa County, California.

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Population1,864 -13.7% since 2019
Elevation7 ft 2 m
Land area5.3 sq mi
ZIP code94511
Nearest airportTravis Air Force Base (SUU) 23 mi

Why visit Bethel Island

Townapedia lists 4 parks and trails, 1 place to eat and 1 place to stay in and around town.

Highlights include Bethel Island Golf Course.

July is the warmest month, with average highs of 91°F; January lows average 40°F.

About Bethel Island

Bethel Island is an island in the Sacramento–San Joaquin River Delta of Contra Costa County, California, United States, approximately 10 kilometres (6.2 mi) east of Antioch. The island describes itself as "the heart of the California Delta."

From the Wikipedia article Bethel Island (this version), under CC BY-SA 4.0.

Parks, trails and playgrounds4

Bethel Island Golf Course

Golf course

18 hole Par 72

3303 Gateway Rd, Bethel Island

Open in Google Maps · +1-925-684-2654

Russo's Marina

Marina and boat launch · 0.6 mi

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Sugar Barge Resort

Marina and boat launch · 1.0 mi

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Franks Tract

Park · 1.5 mi

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Restaurants and cafes1

Rusty Porthole Bar & Grill

Bar and pub · 0.6 mi

3893 North Willow Road, Bethel Island

Open in Google Maps · +1-925-684-3607

Where to stay1

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Schools, colleges and libraries9

Delta Vista Middle

School · 4.1 mi

4901 Frank Hengel Way, Oakley

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Gehringer Elementary

School · 5.2 mi

100 Simoni Ranch Rd., Oakley

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Iron House Elementary

School · 4.1 mi

4801 Frank Hengel Way, Oakley

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Knightsen Elementary

School · 4.4 mi

1923 Delta Rd., Knightsen

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Laurel Elementary

School · 5.7 mi

1141 Laurel Rd., Oakley

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O'Hara Park Middle

School · 5.3 mi

1100 O'Hara Ave., Oakley

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Oakley Elementary

School · 5.3 mi

501 Norcross Ln., Oakley

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Summer Lake Elementary

School · 3.0 mi

4320 East Summer Lake Dr., Oakley

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Vintage Parkway Elementary

School · 5.1 mi

1000 Vintage Pkwy., Oakley

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History

Bethel Island was named for the Bethell Brothers, Frank and Warren Bethell, who formed the first successful farm on the island, called Sand Mound Ranch.

The landform known as Bethel Island was created between 1859 and 1870 by several men, see the names and survey numbers below. (Source: California State Archives for Land Patent Certificate of Purchase for Swamp and Overflow Surveys Numbers 80, 81, 82, 83, 225, 226, 227 and 250). Alonzo Stone purchased much of the property formerly owned by Warren and Anne Bethell, and the area was briefly referred to as the "Stone Tract" in the 1930s. Prior to this, it was referred to as "Sandmound Ranch", "Sandmound Tract" or "Bethel Tract" and contained an estimated area of 6,000 acres (24 km2), and did not become an island until 1911, when Dutch Slough was dredged eastward to join with Sandmound Slough. East Contra Costa Historical Society has been made aware of these inaccuracies, however has not yet updated their website.

The first post office opened in 1898, and named for its first postmaster Franklin Cloud Bethell. The second "L" was dropped by a rather pious postal commissioner that reportedly felt it would be ungodly to allow the new location to be called "Bet Hell", and took liberties to change it to "Bethel" (בית אל), meaning "House of God" in Hebrew. The post office closed in 1902. A Post Office re-opened on Bethel Island in 1947.

From the History section of Bethel Island on Wikipedia, under CC BY-SA 4.0.

Map of Bethel Island

15 places. The map loads OpenStreetMap tiles when you open it.

Climate by month

40°60°80°January: 2.7 in of rainFebruary: 2.4 in of rainMarch: 1.9 in of rainApril: 0.9 in of rainMay: 0.4 in of rainJune: 0.1 in of rainJuly: 0.0 in of rainAugust: 0.0 in of rainSeptember: 0.1 in of rainOctober: 0.4 in of rainNovember: 1.2 in of rainDecember: 2.5 in of rainJanuary: 56°FFebruary: 61°FMarch: 66°FApril: 72°FMay: 79°FJune: 86°FJuly: 91°FAugust: 90°FSeptember: 87°FOctober: 78°FNovember: 65°FDecember: 56°FJanuary: 40°FFebruary: 44°FMarch: 47°FApril: 50°FMay: 54°FJune: 59°FJuly: 61°FAugust: 60°FSeptember: 59°FOctober: 54°FNovember: 46°FDecember: 40°FJFMAMJJASOND
Average high Average low Rain
Monthly table
MonthHighLowRainSnow
Jan56°F40°F2.7 in0.0 in
Feb61°F44°F2.4 in0.0 in
Mar66°F47°F1.9 in0.0 in
Apr72°F50°F0.9 in0.0 in
May79°F54°F0.4 in0.0 in
Jun86°F59°F0.1 in0.0 in
Jul91°F61°F0.0 in0.0 in
Aug90°F60°F0.0 in0.0 in
Sep87°F59°F0.1 in0.0 in
Oct78°F54°F0.4 in0.0 in
Nov65°F46°F1.2 in0.0 in
Dec56°F40°F2.5 in0.0 in

U.S. Climate Normals 1991-2020 for Antioch Pumping Plt #3 (7 mi away), NOAA NCEI.

People and cost of living

$74,972median household income
$682,700median home value
$1,606median monthly rent
56.6median age
18.9%of adults have a bachelor's degree or higher
64.2%of homes are owner-occupied
Age of residents
Under 1817%18 to 341%35 to 6443%65 and over39%

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

Travis Air Force Base (SUU) is the nearest airport with scheduled flights listed in OpenStreetMap, 23 miles away.

Drive times are estimates from straight-line distance, not routes.

Reviews, tips and questions

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Sources and licences

Page built October 30, 2026. Spotted a mistake? Tell us or suggest a place.