Residential delivery area · California
ZIP Code 94511: Bethel Island, CA
ZIP code 94511 is in Bethel Island, California, entirely in Contra Costa County (Census 2020 ZIP-county file). About 1,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $74,972 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- Town
- Bethel Island · its only residential ZIP
- County
- Contra Costa County
- Census places
- Bethel Island census-designated place
- Metro area
- San Francisco-Oakland-Fremont, CA
- House district
- CA-10 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 5.3 sq mi · 355 people per sq mi
Where is ZIP code 94511?
94511 centers on 38.028°, -121.630° and covers 5.3 square miles of land plus 0.6 of water. It borders 3 ZIP codes: 94561, 95219, 94513.
The map draws ZIP code areas only. For the streets inside 94511, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 94511 compare with the rest of Contra Costa County?
| Measure | 94511 | In Contra Costa County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 1,864 | 43rd of 48 | 1,302nd of 1,802 |
| Median household income | $75k | not ranked | not ranked |
| Median home value | $683k | 34th of 43 | 704th of 1,317 |
94511's median household income is not ranked: its 90% margin of error (±$23,097) is more than a quarter of the figure ($74,972). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 69% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 94511?
The 2020 Census counted 2,131 people in 94511; the ACS, which samples households over 2020-2024, estimates 1,864. Between the 2010 and 2020 censuses its population fell 0.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,864±570 (90% margin)
- 2020 Census count
- 2,131−0.3% since 2010 (2,137)
- Households
- 863
- Median age
- 56.6
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 94511?
Of the 1,864 people the ACS estimates in 94511, 17.4% are under 18 and 38.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (53.4%), then Hispanic or Latino (41.7%).
- Under 1817.4%
- 18 to 6443.7%
- 65 and older38.9%
- White, not Hispanic53.4%
- Hispanic or Latino41.7%
- Asian, not Hispanic2.9%
- Other or two or more2.0%
- Black, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 94511 earn?
Median household income is $74,972 (ACS 2020-2024). It rose from $41,206 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $74,972±$23,097
- Income per person
- $39,932
- Below the poverty line
- 34.6%
- Unemployed (of the labor force)
- 35.5%
- Adults 25+ with a bachelor's degree
- 18.9%
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 94511?
FHFA's house price index for 94511, built from repeat sales and appraisals of the same homes, rose 68% from 2015 to 2025 and rose 23% from 2020 to 2025, and moved −16.7% in 2025.
- Median home value (owners' estimate)
- $682,700
- Median gross rent
- $1,606
- Homes owned by their occupants
- 64.2%
- Housing units
- 1,038
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 94511?
35 business establishments had a location in this ZIP code in 2023, 5 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction8
- Retail trade6
- Real estate and rental and leasing5
- Accommodation and food services4
- Arts, entertainment, and recreation3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 94511?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94561 | Oakley | 46,368 | $135k | 4.1 mi |
| 95219 | Stockton | 31,713 | $112k | 6.4 mi |
| 94513 | Brentwood | 69,755 | $142k | 7.8 mi |
| 94548 | Knightsen | 832 | $190k | 3.9 mi (near) |
| 95641 | Isleton | 2,214 | $75k | 8.9 mi (near) |
| 94531 | Antioch | 46,387 | $121k | 9.4 mi (near) |
| 94509 | Antioch | 70,090 | $86k | 10.3 mi (near) |
| 95686 | Thornton | 1,171 | $52k | 10.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.