Zip Code 94561
Oakley, California — Contra Costa County
📍 ZIP code 94561 is in Oakley, Contra Costa County, California.
ZIP code 94561 is located in Oakley, Contra Costa County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 45,386. The area code for ZIP code 94561 is 408.
Quick Answer
Zip code 94561 is in Oakley, California (Contra Costa County). It has a population of 45,386, median household income of $130,859, and median home value of $632,100.
Population
45,386
Income
$130,859
Home Value
$632,100
Climate
91°F / 40°F
About Zip Code 94561
Zip code 94561 is located in Oakley, California, within Contra Costa County. Home to approximately 45,386 residents, this area sits at an elevation of 16 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 408.
The median household income is $130,859 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $632,100, and the cost of living index is 195 (95% above the national average of 100).
Summers average a high of 91°F while winters drop to 40°F. The area receives about 13 in of rain annually. The zip code covers 17 square miles of land area and 0.9 square miles of water.
Key Statistics
45,386
$130,859
$632,100
Pacific (PST/PDT)
408
16 ft
17 sq mi
36.2
14,251
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Compare With Nearby Zip Codes
| Metric | 94561 | 94511 | 94513 | 94509 | 94571 | 95641 |
|---|---|---|---|---|---|---|
| City | Oakley, CA | Bethel Island, CA | Brentwood, CA | Antioch, CA | Rio Vista, CA | Isleton, CA |
| Population | 45,386 | 2,144 | 68,160 | 71,013 | 10,973 | 2,086 |
| Median Income | $130,859 | $78,393 | $139,736 | $81,512 | $85,212 | $76,667 |
| Home Value | $632,100 | $549,500 | $793,900 | $565,300 | $479,900 | $293,300 |
| Cost of Living | 195 | 148 | 229 | 153 | 141 | 75 |
| Median Age | 36.2 | 54.5 | 40.6 | 37.6 | 64.1 | 50.9 |
Cost of Living
100 = National Average. Oakley's cost of living is 95% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.8x
Demographics
Zip code 94561 has a population of 45,386 people with a median age of 36.2. There are 14,251 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Oakley (94561) population trend from 2010 to 2024
↑ 3445.8%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
91°F
40°F
13 in
0 in
Oakley experiences hot summers with average highs around 91°F. Winters are mild with lows averaging 40°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$632,100
Median Household Income
$130,859
With 14,251 housing units across 17 square miles, 94561 has a housing density of 838 units per square mile. The home price-to-income ratio is 4.8x.
Location & Geography
Latitude
37.9935°
Longitude
-121.6912°
Land Area
17 sq mi
Water Area
0.9 sq mi
Nearby Zip Codes
Zip codes closest to 94561 (Oakley, CA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 94561's $130,859. A way to compare Oakley to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 94561 (Oakley, CA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Oakley, California?
Oakley, California uses zip code 94561.
What county is zip code 94561 in?
Zip code 94561 is located in Contra Costa County, California.
What is the population of zip code 94561?
The population of zip code 94561 is 45,386 with a median age of 36.2.
Is 94561 in Oakley, California?
Yes, zip code 94561 is in Oakley, Contra Costa County, California. The area code is 408.
Frequently Asked Questions
What city is zip code 94561 in?
Zip code 94561 is in Oakley, California. It is part of Contra Costa County and uses the Pacific (PST/PDT) timezone.
What is zip code 94561?
Zip code 94561 is a U.S. postal code in Oakley, California (Contra Costa County). It has a population of 45,386 and covers 17 square miles.
What is the population of zip code 94561?
The population of zip code 94561 (Oakley, CA) is 45,386 with a median age of 36.2. There are approximately 14,251 housing units in this area.
What is the median income in zip code 94561?
The median household income in zip code 94561 (Oakley, CA) is $130,859 per year. The cost of living index is 195 (100 = national average).
What is the average home price in zip code 94561?
The median home value in zip code 94561 (Oakley, CA) is $632,100. The cost of living index is 195 compared to the national average of 100.
What county is zip code 94561 in?
Zip code 94561 is located in Contra Costa County, California. The primary city is Oakley.
What is the area code for zip code 94561?
Zip code 94561 in Oakley, CA uses area code 408. It is located in the Pacific (PST/PDT) timezone.
Is zip code 94561 a good place to live?
Zip code 94561 (Oakley, CA) has a cost of living index of 195 (100 = national average), a median household income of $130,859, and median home values of $632,100. The median age is 36.2. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 94561?
The cost of living index for zip code 94561 (Oakley, CA) is 195, where 100 represents the national average. This area is above the national average. Median home value: $632,100.
What schools serve zip code 94561?
Zip code 94561 in Oakley, California is served by the local school district of Contra Costa County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.