ZIP code 18106

ZIP 18106 is a mid-size town in Lehigh County, Pennsylvania, with 6,437 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #553 of 1,833 ranked by population — larger than 69% of them. The median age here is 48.4 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 ZIP 18106 earn a median of $86,361 a year, 10% above the national figure of $78,538. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 9.3% of residents here, below the 12.4% national rate.

The typical owner-occupied home in ZIP 18106 is valued at $361,200, 19.1% above the national figure, while median gross rent runs $1,554 a month, 10.5% above the national figure, or roughly $18,648 across a full year. A household on the local median income would put about 21.6% 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 4.2×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 80.3% 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.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. 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.

ZIP 18106 is tabulated inside Lehigh County, Pennsylvania, one of 28 ZIP areas the Census publishes for that county and 1,833 across Pennsylvania. Population sits in the small-town band, typically one main street plus the addresses that feed into it. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 18106 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 18106 reports a median household income of $86,361, 8% below the $93,924 county median, and 23% above the $70,000 typical PA ZIP. Owner-occupied homes are valued at a median of $361,200, 22% above the county figure and 93% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,554 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Pennsylvania charges 6% statewide, and local governments overlapping 18106 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 18106 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.