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Port Costa, CA
Census-designated place in Contra Costa County, California. ZIP codes: 94569.
Population
296
Land area
0.2sq mi
People per sq mi
1,871
ZIP codes
1
Port Costa and its ZIP codes
Port Costa at a glance
- Port Costa is about 7.4 times as dense as California as a whole.
Local data for Port Costa, CA
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Contra Costa County. PPP loans are for Port Costa.
Unemployment rate
4.8%
Sep 2026, -0.2 pts in a year
Average annual pay
$87,200
374,448 jobs, 2025
Income per person
$108,259
BEA, 2024
Federal spending
$7.1B
FY 2026, $6,088 per person
Environment and hazard risk
Port Costa, CA, from FEMA, NOAA and EPA
Natural hazard risk
Very High
Top: earthquake
Storm events since 1996
472
Countywide, mostly strong wind
Flood insurance policies
2,681
0.9% of homes, county
July high / Jan low
85° / 42°F
21.5 inches of rain a year
Hazards, floods and storm historyCheck a flood zone1 historic places
Health statistics
Share of adults in Port Costa, CA, CDC PLACES estimates
Obesity
30.2%
U.S. 33.3% -3.1 pts
Diabetes
10.4%
U.S. 12.1% -1.7 pts
Smoking
11.0%
U.S. 12.8% -1.8 pts
Uninsured (18-64)
4.7%
U.S. 11.1% -6.4 pts
ZIP codes in Port Costa
1 in or overlapping Port Costa. Population shown
Cities near Port Costa
| Name | Distance | Land area (sq mi) |
|---|---|---|
| CrockettCensus-designated place | 2 mi | 1.1 |
| BeniciaCity | 2.5 mi | 12.8 |
| RodeoCensus-designated place | 3.8 mi | 3.7 |
| Mountain ViewCensus-designated place | 4.5 mi | 0.3 |
| MartinezCity | 4.7 mi | 12.6 |
| HerculesCity | 5.3 mi | 6.4 |
| VallejoCity | 5.4 mi | 30.4 |
| Vine HillCensus-designated place | 6 mi | 1.5 |
| Alhambra ValleyCensus-designated place | 6.2 mi | 1.6 |
| PinoleCity | 6.7 mi | 5.1 |
| PachecoCensus-designated place | 7.4 mi | 0.8 |
| BayviewCensus-designated place | 7.6 mi | 0.3 |
| Tara HillsCensus-designated place | 8.1 mi | 0.7 |
| El SobranteCensus-designated place | 8.2 mi | 3.1 |
| Montalvin ManorCensus-designated place | 8.6 mi | 0.3 |
| Pleasant HillCity | 8.6 mi | 7.1 |
Frequently asked questions
- What county is Port Costa, CA in?
- Port Costa is in Contra Costa County, California.
- What ZIP codes are in Port Costa, CA?
- ZIP codes in or overlapping Port Costa include 94569.
- What is the population of Port Costa, CA?
- About 296 people live in Port Costa, based on American Community Survey 5-year estimates.
- What cities are near Port Costa?
- Nearby places include Crockett (2 mi), Benicia (2.5 mi), Rodeo (3.8 mi), Mountain View (4.5 mi), Martinez (4.7 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023