Maine ZIP codes

Maine is unusually decentralised. No single centre dominates — the ten largest ZIP codes together hold just 21% of the 1,377,734 residents here, and 27 separate entries clear 10,000 people. State-level averages are more representative here than in most states, because there is no outsized core pulling them. The median row holds just 1,489 residents. At that scale margins of error widen sharply, and a single large household or seasonal population can shift a median.

Buying is a little easier here than nationally: Maine's median ZIP code shows $230,650 in home value on $65,739 of income, a ratio of 3.5 against 3.9 across the country. Rent stays modest against earnings — $983 a month, roughly 18% of median household income over a year.

Middle-of-the-road dispersion: $47,269 to $96,250 across the tenth-to-ninetieth percentile band, a 2.04× spread. 04006 tops the list at $250,001 and 04451 anchors the bottom at $29,402, but those two are not where most of this list sits.

Coverage is close to complete: only 31 of 427 rows show a blank where the Census suppressed an estimate for sample-size reasons. The rest are published five-year values, averaged over sixty months of responses.

How many ZIP codes does Maine have? 427 appear in the current federal tabulation. ZIP code tabulation areas are the Census approximation of postal ZIP codes, so the count differs slightly from the number of ZIPs the Postal Service delivers to in Maine, and PO-box-only ZIPs have no area at all.

Which Maine row should I compare mine against? Pick ZIP codes within roughly the same population band. In a state this spread out, size drives the housing and income figures more than region does.

How current is this? Every figure comes from the American Community Survey 2019-2023 ACS 5-year release published by the US Census Bureau, ACS 2019-2023 5-year estimates. It reflects the full survey window rather than a single date, and it is the most recent vintage available for ZIP codes this small.