Mercer ZIP codes — Mercer County, Ohio

Mercer County is a small city in Ohio, with 42,438 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates. The median age here is 39.1 years against 39.1 nationally, a slightly younger profile than the country as a whole. 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 Mercer County earn a median of $78,036 a year, essentially level with the national figure of $78,538. 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 6.1% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Mercer County is valued at $208,600, 31.2% below the national figure, while median gross rent runs $812 a month, 42.2% below the national figure, or roughly $9,744 across a full year. A household on the local median income would put about 12.5% 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 2.7×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 79.6% 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.

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.