Lake Oswego, OR population, income and ZIP codes

Lake Oswego city is a small city in Oregon, with 40,367 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #14 of 426 ranked by population — larger than 96% of them. The median age here is 46.5 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 Lake Oswego city earn a median of $140,441 a year, 78.8% above the national figure of $78,538 and 90% above the $74,006 median for the 228 Oregon 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 3.1% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Lake Oswego city is valued at $894,000, 194.7% above the national figure and 137% above the $377,700 peer median, while median gross rent runs $2,031 a month, 44.5% above the national figure, or roughly $24,372 across a full year. A household on the local median income would put about 17.4% 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 6.4×, 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. 70.8% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. 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 6.4× 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.