Port Costa, CA population, income and ZIP codes

Port Costa CDP is a very small community in California, with 194 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #1384 of 1,618 ranked by population — larger than 14% of them. The median age here is 68.5 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Port Costa CDP earn a median of not published a year. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 0% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Port Costa CDP is valued at $586,500, 93.3% above the national figure and within a couple of points of the $589,600 peer median, while median gross rent runs not published a month. 35.4% of occupied homes are owner-occupied versus 65% nationally, a renter-majority market, so rent figures matter more here than the home-value line. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

A median age of 68.5 puts Port Costa CDP well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages. With 194 residents, a handful of survey responses moves every median on this page. Compare Port Costa CDP against its county rather than against national figures.

The Census withheld household income, gross rent for Port Costa CDP because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.