Newcastle, ME population, income and ZIP codes

Newcastle CDP is a very small community in Maine, with 621 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #125 of 155 ranked by population — larger than 19% of them. The median age here is 55 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 Newcastle CDP earn a median of $76,389 a year, 2.7% below the national figure of $78,538 and 29% above the $58,992 median for the 106 Maine cities we cover. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 2.9% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Newcastle CDP is valued at $417,700, 37.7% above the national figure and 88% above the $221,600 peer median, while median gross rent runs $1,042 a month, 25.9% below the national figure, or roughly $12,504 across a full year. A household on the local median income would put about 16.4% 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 5.5×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 74.8% 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.

A median age of 55 puts Newcastle CDP well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages. With 621 residents, a handful of survey responses moves every median on this page. Compare Newcastle CDP against its county rather than against national figures.

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.