Fastest-Appreciating ZIP Codes in Portland-South Portland, ME (2026)

Ranked by 5-year compound annual growth in home values. Fast growth and strong cash flow rarely appear in the same ZIP — this is the other side of that trade.

# ZIP City Home value Rent Cap rate 5-yr growth
1 04090 Wells, ME $592,791 $1,960 2.58% 8.1%
2 04287 Bowdoin, ME $422,423 $1,512 2.79% 7.8%
3 04530 Bath, ME $420,959 $1,870 3.46% 7.2%
4 04039 Gray, ME $524,436 $2,050 3.05% 6.9%
5 04108 Portland, ME $745,716 $1,782 1.86% 6.8%
6 04086 Topsham, ME $478,520 $1,638 2.67% 6.7%
7 04008 Bowdoinham, ME $391,797 $1,494 2.97% 6.6%
8 04064 Old Orchard Beach, ME $512,719 $1,889 2.87% 6.6%
9 03901 Berwick, ME $484,345 $2,200 3.54% 6.6%
10 04073 Sanford, ME $378,187 $1,768 3.65% 6.6%
11 04020 Cornish, ME $400,960 $1,539 2.99% 6.5%
12 04005 Biddeford, ME $511,537 $2,003 3.05% 6.5%
13 03906 North Berwick, ME $499,860 $1,602 2.50% 6.4%
14 04048 Limerick, ME $419,296 $1,629 3.03% 6.4%
15 04015 Casco, ME $454,012 $1,629 2.80% 6.4%
16 04032 Freeport, ME $703,001 $2,658 2.95% 6.4%
17 04038 Gorham, ME $553,325 $2,175 3.07% 6.4%
18 04066 Harpswell, ME $730,368 $1,593 1.70% 6.3%
19 04072 Saco, ME $531,657 $2,040 2.99% 6.3%
20 04083 Springvale, ME $367,608 $1,895 4.02% 6.3%
21 04011 Brunswick, ME $506,510 $2,156 3.32% 6.3%
22 04105 Falmouth, ME $912,110 $3,025 2.59% 6.3%
23 03905 Kittery, ME $852,457 $2,628 2.40% 6.2%
24 04040 Harrison, ME $416,898 $1,422 2.66% 6.2%
25 04062 Windham, ME $502,062 $2,321 3.61% 6.2%

Ranked from Repit’s own ZIP-level data — Zillow home values and rents, HUD fair-market rents where Zillow has no coverage, and U.S. Census vacancy. Cap rate is gross: annual rent over purchase price, before financing and expenses. Every ZIP above links to its full free page. How we calculate this →

Same metro, different strategy

Cash Flow in Portland-South Portland, ME  ·  Affordable in Portland-South Portland, ME

Or see the full Portland-South Portland, ME metro profile.