| City: | Bethel Island, California |
| County: | Contra Costa County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 9:52:10 AM |
| Population: | 2,131 [See All] |
| Area Code: | 925 |
| Classification: | PO Box |
| Coordinates: | 38.0534, -121.6277 |
| Land Area: | 5.252 sq mi |
| Quick Link: |
Bethel Island sits in California's Sacramento-San Joaquin Delta, a 7.3 square mile community surrounded by waterways and sloughs. The post office maintains 1,326 PO Boxes for 983 households, a 1.35 adoption rate that extends service beyond the immediate island to nearby waterfront areas and boaters who use the island as their mailing base.
This is a PO Box Only Zone. There's no alternative mail delivery across the island. While the ZIP has both city carrier routes (124 records) and rural routes (116 records) serving different parts of the island, all delivery originates from the Bethel Island Road post office. Street names like Delta Coves Drive, Riverview Road, Harbor Drive, and Edgewater Court emphasize the waterfront character that defines this community.
With a median age of 54.6 years and 14% of homes held for seasonal or occasional use (178 of 1,244 units), Bethel Island serves as both a year-round retirement community and a Delta recreation destination. The population of 2,131 lives in a mix of waterfront homes, with 782 owner-occupied and 201 renter-occupied households. Median home values of $549,500 place it in the moderate range for California, while 29% of workers operate from home, many likely enjoying the island's slower pace.
The island's mail infrastructure handles residential delivery plus 32 business locations serving the boating and recreation economy. Bethel Island Road, the main artery with 131 delivery records, runs the length of the island and contains most commercial activity including suites and unit-based addresses. Gateway Road (20 records) serves a mobile home community at the island's entrance.
All mail to Bethel Island addresses requires a PO Box. The standard format is:
PO Box [number]
Bethel Island, CA 94511Street names emphasize the Delta waterfront character with names like Delta Coves, Harbor, Riverview, Edgewater, and Waterside, while Bethel Island Road serves as the main commercial and residential artery.
ZIP Code 94511 has 2,131 residents and 983 households (average 2.14 persons per household). The median age is 54.6 years, significantly older than the state (37.5) and significantly older than the nation (38.8). The gender split is 51.6% male and 48.4% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (72.5%, much higher than the state average of 41.2% and well above the national average of 61.6%) and Hispanic or Latino (21.0%); Hispanic or Latino residents make up 21.0%, which is much lower than the state average (39.4%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 2,131Source: Census DHC |
| 2024 ACS Population Estimate: | 1,864Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 405.8 people per sq mile |
| Average Income: | $74,972Source: Census ACS |
| Households: | 983Source: Census DHC |
| Average House Value: | $682,700Source: Census ACS |
| Persons Per Household: | 2.14Source: Census DHC |
| Average Family Size: | 3.46Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 1,882 | 1,910 | 2,172 | 2,158 | 2,172 | 2,199 | 2,379 | 2,010 | 2,161 | 2,015 | 2,119 | 1,993 | 2,144 | 1,864 |
| Decennial Census | 2,137 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 2,131 | -- | -- | -- | -- |
Median Age: 54.6
Male Median Age: 55.2
Female Median Age: 53.6
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 32 | 47 | 40 | 35 | 29 | 60 | 51 | 66 | 49 | 54 | 83 | 117 | 151 | 101 | 73 | 47 | 42 | 22 |
| Female | 38 | 44 | 40 | 42 | 40 | 37 | 54 | 61 | 48 | 43 | 90 | 123 | 98 | 73 | 82 | 48 | 52 | 19 |
| Total | 70 | 91 | 80 | 77 | 69 | 97 | 105 | 127 | 97 | 97 | 173 | 240 | 249 | 174 | 155 | 95 | 94 | 41 |
| White: | 1,544 | 64.96% |
| Black: | 63 | 2.65% |
| Hispanic:* | 447 | 18.81% |
| Asian: | 52 | 2.19% |
| American Indian: | 42 | 1.77% |
| Hawaiian: | 7 | 0.29% |
| Other: | 222 | 9.34% |
| Total: | 2,377 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 1,099 | 51.57% | 55.2 years |
| Females: | 1,032 | 48.43% | 53.6 years |
| Total: | 2,131 | 100% | 54.6 years |
| Native, born in the United States: | 1,330 | 71.35% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 138 | 7.40% |
| Foreign born, not a U.S. citizen: | 396 | 28.65% |
| Total Population: | 1,864 | 100% |
| Total Native Population: | 1,330 | 71.35% |
| Total Foreign-born Population: | 534 | 28.65% |
In 2024, the Median household income is $74,972, which is much lower than the national median ($80,734), is up $44,563 (146.5%) since 2011 and above its 2019 pre-pandemic level by $41,389. Family households earn a median of $72,438 versus $80,036 for nonfamily households (a difference of $7,598). By gender, male median income is $81,964 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $81,964 that has widened from 2011 to 2024. The labor-force participation rate is 41.5%, which is much lower than the national rate (63.5%). The unemployment rate is 35.5%, which is much higher than the national rate (5.2%). The largest occupation group is Natural resources (58.1%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $30,409 | $33,771 | $35,288 | $36,845 | $35,988 | $35,814 | $36,167 | $38,801 | $33,583 | $62,019 | $80,227 | $85,870 | $78,393 | $74,972 |
| Median Family Income | $57,292 | $64,432 | $71,304 | $72,536 | $58,654 | $58,804 | $75,324 | $65,179 | $49,018 | $101,250 | $113,893 | $172,704 | $99,611 | $72,438 |
| Median NonFamily Income | $17,566 | $19,500 | $19,911 | $24,004 | $19,919 | $20,896 | $21,003 | $20,246 | $21,066 | $38,750 | $67,518 | $75,336 | $0 | $80,036 |
| Median Male Income | $47,375 | $49,320 | $80,395 | $68,750 | $0 | $62,273 | $0 | $0 | $0 | $66,520 | $86,349 | $90,739 | $79,696 | $81,964 |
| Median Female Income | $46,293 | $48,814 | $32,200 | $39,000 | $0 | $44,861 | $39,838 | $51,480 | $52,150 | $54,583 | $57,100 | $107,393 | $110,758 | $0 |
| Employed: | 418 | 26.74% |
| Unemployed: | 230 | 14.72% |
| Not In Labor Force: | 915 | 58.54% |
| Total: | 1,563 | 100% |
| Management, business, science, and arts: | 107 | 25.60% |
| Service: | 21 | 5.02% |
| Sales and Office: | 47 | 11.24% |
| Natural resources, construction, and maintenance: | 243 | 58.13% |
| Production, transportation, and material moving: | 0 | 0.00% |
| Total Civilian Employed Population: | 418 | 100% |
In 2024, the median home value is $682,700, which is much higher than the national median ($332,700), is up $501,000 (275.73%) since 2011 and above its 2019 pre-pandemic level by $513,800. The median gross rent is $1,606, which is much higher than the national median ($1,413), is up $452 (39.17%) since 2011 and above its 2019 pre-pandemic level by $876. Of occupied housing, owners make up 64.19% (25.09% with a mortgage, 74.91% free-and-clear) and renters 35.81% - making this ZIP Code higher than national rental averages. The vacancy rate is 16.86%, which is far higher than the national rate (10.12%).
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $181,700 | $185,500 | $206,100 | $187,900 | $180,600 | $0 | $0 | $122,300 | $168,900 | $323,700 | $433,300 | $475,400 | $549,500 | $682,700 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 0 | 0.00% |
| $1,000 to $1,499: | 135 | 43.69% |
| $1,500 to $1,999: | 92 | 29.77% |
| $2,000 to $2,499: | 82 | 26.54% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 0 | 0.00% |
| Total: | 309 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $1,154 | $1,160 | $1,224 | $1,199 | $1,379 | $1,245 | $1,153 | $1,049 | $730 | $1,203 | $1,297 | $1,369 | $1,390 | $1,606 |
| Owner Occupied (with mortgage): | 139 | 16.11% |
| Owner Occupied (free and clear, no mortgage): | 415 | 48.09% |
| Renter Occupied: | 309 | 35.81% |
| Total Occupied Housing Units: | 863 | 100% |
| Occupied Housing Units: | 863 | 83.14% |
| Vacant Housing Units (not graphed): | 175 | 16.86% |
| Total Housing Units: | 1,038 | 100% |
| Single-Family Units: | 767 | 73.89% |
| Multi-Family Units: | 38 | 3.66% |
| Other Units: | 233 | 22.45% |
| Total Housing Units: | 1,038 | 100% |
In 2024, 18.90% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 67.70%, which is far lower than the national rate (89.60%). The uninsured rate is 7.60%, which is comparable to the national rate (8.40%). Public coverage is 63.80%, which is far higher than the national rate (36.70%). The share of people in poverty is 37.70%, which is comparable to the national rate (8.80%), up 24.80 percentage points since 2011 and above its 2019 pre-pandemic level by 11.80 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is elementary (53.07%). College enrollment is 20.39%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 356 | 23.44% |
| 9th to 12th grade, no diploma: | 134 | 8.82% |
| High school graduate (includes equivalency): | 500 | 32.92% |
| Some college, no degree: | 130 | 8.56% |
| Associate's degree: | 112 | 7.37% |
| Bachelor's degree: | 127 | 8.36% |
| Graduate or professional degree: | 160 | 10.53% |
| Total: | 1,519 | 100% |
| High school or higher: | 1,029 | 67.74% |
| Bachelor's degree or higher: | 287 | 18.89% |
| Private Insurance: | 1,039 | 43.84% |
| Public Insurance: | 1,189 | 50.17% |
| No Insurance: | 142 | 5.99% |
| Total: | 2,370 | 100% |
| Has Health Insurance: | 2,228 | 94.01% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 6.5% | 0.0% | 0.0% | 0.0% | 4.7% | 6.1% | 9.6% | 10.6% | 19.5% | 19.0% | 14.0% | 9.0% | 31.3% | 37.7% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 0 | 0.00% |
| Kindergarten: | 33 | 8.11% |
| Elementary school (grades 1-8): | 216 | 53.07% |
| High school (grades 9-12): | 75 | 18.43% |
| College or graduate school: | 83 | 20.39% |
| Total: | 407 | 100% |
| Early Childhood: | 33 | 8.11% |
| K-12 (Primary & Secondary School): | 324 | 79.61% |
ZIP Code 94511 supports both business and residential activity. According to the Business Census (2024), there are 35 business establishments, employing about 239 people with an annual payroll of $10,120,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,714Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 35Source: CBP |
| 1st Quarter Payroll: | $2,390,000Source: CBP |
| Annual Payroll: | $10,120,000Source: CBP |
| # of Employees: | 239Source: CBP |
ZIP Code 94511 is located in Contra Costa County, California, within the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area (CBSA 41860) and California's 10th Congressional District. This Metro area has a population of 4,335,391 people, about 0.05% of whom live in ZIP Code 94511, and is subdivided into the Oakland-Fremont-Berkeley, CA division. It covers 5.252 sq mi of land and a water area of 0.583 sq mi.
| CBSA Name: | San Francisco-Oakland-Fremont, CASource: Census |
| CBSA Number: | 41860Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Oakland-Fremont-Berkeley, CA (CBSA Div 36084)Source: Census |
| CBSA Population: | 4,335,391Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | 5.252 sq miSource: Census |
| Water Area: | 0.583 sq miSource: Census |
| Congressional District: | 10Source: USPS |
| Congressional Land Area: | 1818.79 sq miSource: Census |
| PMSA: | Oakland, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0606210Source: Census |
| Place Name: | Bethel Island CDP; CaliforniaSource: Census |
We could not locate which school district 94511 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.