SIALIMStatistical Intelligence for America's Local Investment Markets

The Most Expensive ZIP Codes in Portland

Ranked from observed Zillow data as of June 2026 — not a forecast. 73 ZIP codes in the Portland-South Portland, ME area. See the Portland forecast →

Cheaper
More expensive· dot size = population

10 most expensive ZIP codes in Portland are ringed on the map; all 83 ZIPs shown, colored by typical home value and sized by population. Hover any dot for its ZIP and value.

Which are the best ZIP codes to buy in Portland?

There is no single answer, because "best" depends on what a buyer is optimizing for. The three tables below rank the same 73 ZIP codes three different ways: by typical home value, by how much prices have actually moved over the past year, and by how far a home's price stretches against observed rent. A ZIP code that leads one list rarely leads all three.

Most expensive — June 2026

Ranked by typical home value (Zillow ZHVI), highest first.

#ZIPCityPopulationTypical value
104110Cumberland1.9K$1,006,734
203907Ogunquit1.3K$944,769
304105Falmouth12.6K$919,849
404107Cape Elizabeth9.6K$911,580
503905Kittery2.0K$867,719
604109Portland188$856,845
704003Harpswell90$853,821
803902York2.5K$792,349
904046Arundel8.0K$786,138
1003909York11.0K$781,794

Fastest-appreciating — past 12 months

Ranked by observed price change over the trailing year, not a forecast.

#ZIPCityPopulationTypical value1-yr change
104287Bowdoin3.2K$428,084+11.7%
204548Georgetown913$713,605+7.4%
304015Casco3.7K$454,855+7.2%
404040Harrison3.0K$418,927+6.2%
504039Gray8.0K$526,078+5.6%
603901Berwick8.1K$483,835+4.4%
703905Kittery2.0K$867,719+4.4%
804048Limerick3.3K$419,211+3.9%
904095Newfield1.4K$401,236+3.7%
1003904Kittery8.3K$663,452+3.7%

Best rental value — past 12 months

Ranked by price-to-rent (typical value ÷ observed annual rent), lowest first — the ZIP codes where buying looks cheapest relative to renting.

#ZIPCityPopulationTypical valuePrice ÷ annual rent
104092Westbrook20.5K$466,73016×
204083Springvale4.7K$371,42316.3×
304103Portland31.7K$542,86516.6×
404106South Portland27.0K$541,26417.8×
504073Sanford17.4K$379,65918.8×
604530Bath11.6K$424,77119.1×
704102Portland17.6K$556,34719.3×
804072Saco20.6K$533,62320×
904011Brunswick22.1K$505,91220×
1003908South Berwick7.4K$534,73220.3×

Frequently asked questions

What is the most expensive ZIP code in the Portland area?

04110 (Cumberland), with a typical home value of $1,006,734 as of June 2026, the latest month Zillow has published.

Which are the best ZIP codes to buy in Portland?

It depends on the goal. This page ranks three separately: the most expensive ZIP codes (highest typical value), the fastest-appreciating (largest observed price gain over the past year), and the best rental value (lowest price relative to observed rent). The three lists often name different ZIP codes.

Is this page showing forecasts?

No. Every number on this page is observed Zillow data as of June 2026, not a forecast. Sialim's forecasts, at the metro level, are on the linked metro forecast page.

ZIP-level values shown here are observed Zillow data, not forecasts. Sialim's forecasting engine works at the metro level today; ZIP-level forecasts are planned for Sialim Pro. Data © Zillow, via Zillow Research.