San Miguel (Contra Costa Co.), CA population, income and ZIP codes

San Miguel CDP (Contra Costa County) is a small town in California, with 3,991 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #704 of 1,618 ranked by population — larger than 56% of them. The median age here is 46.8 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 San Miguel CDP (Contra Costa County) earn a median of $224,219 a year, 185.5% above the national figure of $78,538 and 146% above the $91,111 median for the 1,050 California cities we cover. 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 2.8% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in San Miguel CDP (Contra Costa County) is valued at $1,627,300, 436.4% above the national figure and 176% above the $589,600 peer median, while median gross rent runs $2,458 a month, 74.8% above the national figure, or roughly $29,496 across a full year. A household on the local median income would put about 13.2% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 7.3×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 91.5% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Home values sit at 7.3× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere.

All values below were released by the Census for this exact geography, with no gap-filling on our side. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.