Most Affordable ZIP Codes in Portland-South Portland, ME (2026)

The lowest entry prices that still hold a decent investability rating — cheap is only useful if the market underneath it is sound.

# ZIP City Home value Rent Cap rate 5-yr growth
1 04357 Richmond, ME $341,681 $1,368 3.12% 5.8%
2 04047 Parsonsfield, ME $363,164 $1,566 3.36% 3.8%
3 04083 Springvale, ME $367,608 $1,895 4.02% 6.3%
4 04073 Sanford, ME $378,187 $1,768 3.65% 6.6%
5 04008 Bowdoinham, ME $391,797 $1,494 2.97% 6.6%
6 04061 Waterboro, ME $392,633 $1,557 3.09% 6.0%
7 04020 Cornish, ME $400,960 $1,539 2.99% 6.5%
8 04095 Newfield, ME $402,904 $1,557 3.01% 5.2%
9 04029 Sebago, ME $414,747 $1,620 3.05% 4.4%
10 04027 Lebanon, ME $416,828 $1,710 3.20% 5.3%
11 04040 Harrison, ME $416,898 $1,422 2.66% 6.2%
12 04076 Shapleigh, ME $417,404 $1,683 3.15% 3.5%
13 04009 Bridgton, ME $418,408 $1,795 3.35% 5.5%
14 04048 Limerick, ME $419,296 $1,629 3.03% 6.4%
15 04530 Bath, ME $420,959 $1,870 3.46% 7.2%
16 04049 Limington, ME $421,592 $1,629 3.01% 4.8%
17 04287 Bowdoin, ME $422,423 $1,512 2.79% 7.8%
18 04087 Waterboro, ME $425,859 $1,629 2.98% 5.6%
19 04030 Waterboro, ME $429,993 $1,674 3.04% 5.8%
20 04579 Woolwich, ME $431,529 $1,818 3.29% 5.6%
21 04085 Standish, ME $433,955 $1,998 3.59% 5.9%
22 04260 New Gloucester, ME $441,858 $1,593 2.81% 4.7%
23 04055 Naples, ME $443,195 $2,007 3.53% 5.9%
24 04042 Hollis, ME $448,451 $1,629 2.83% 4.6%
25 04015 Casco, ME $454,012 $1,629 2.80% 6.4%

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 →