Most Affordable ZIP Codes in St. Louis, MO-IL (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 62207 1% rule Centreville, IL $40,057 $891 17.35% 0.1%
2 63115 1% rule Saint Louis, MO $40,674 $934 17.91% 0.0%
3 62203 1% rule East Saint Louis, IL $40,971 $1,017 19.36% 1.2%
4 63107 1% rule Saint Louis, MO $45,454 $825 14.16% -3.5%
5 62201 1% rule East Saint Louis, IL $52,670 $891 13.20% -5.1%
6 62206 1% rule Cahokia, IL $52,802 $1,312 19.38% 2.3%
7 62060 1% rule Madison, IL $52,863 $972 14.34% 4.2%
8 63113 1% rule Saint Louis, MO $53,993 $900 12.99% -3.3%
9 63147 1% rule Saint Louis, MO $60,488 $1,000 12.90% -0.8%
10 62009 1% rule Benld, IL $74,694 $828 8.65% 5.2%
11 63133 1% rule Pagedale, MO $75,992 $1,248 12.81% 9.6%
12 62048 1% rule Hartford, IL $84,705 $963 8.87% 5.0%
13 63121 1% rule Normandy, MO $88,008 $1,078 9.55% 4.1%
14 63137 1% rule Bellefontaine Neighbors, MO $95,347 $1,385 11.33% 3.8%
15 62084 Roxana, IL $108,017 $954 6.89% 3.5%
16 62058 Livingston, IL $108,292 $891 6.42% 6.2%
17 62033 Gillespie, IL $110,211 $828 5.86% 1.9%
18 62018 Cottage Hills, IL $110,650 $926 6.53% 5.0%
19 62257 Marissa, IL $112,301 $891 6.19% 2.4%
20 63135 1% rule Ferguson, MO $112,649 $1,340 9.28% 2.7%
21 63134 1% rule Berkeley, MO $114,026 $1,313 8.98% 6.0%
22 63106 Saint Louis, MO $117,824 $937 6.20% -2.8%
23 62002 Alton, IL $120,090 $981 6.37% 3.6%
24 62255 Lenzburg, IL $120,350 $900 5.83% -0.1%
25 62253 Keyesport, IL $121,434 $891 5.72% 4.9%

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 →