Walnut, CA population, income and ZIP codes

Walnut city is a small city in California, with 27,857 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #281 of 1,618 ranked by population — larger than 82% of them. The median age here is 46.4 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Walnut city earn a median of $133,762 a year, 70.3% above the national figure of $78,538 and 47% 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 8.6% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Walnut city is valued at $972,500, 220.5% above the national figure and 65% above the $589,600 peer median, while median gross rent runs $3,120 a month, 121.9% above the national figure, or roughly $37,440 across a full year. A household on the local median income would put about 28% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. 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. 82.7% 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. 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.

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.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. 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.