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Cheapest ZIPs in Saint Charles County, MO

No ZIP in Saint Charles County, MOclears the HavenScore: 60 quality floor this month — in high-cost counties, low prices and strong scores rarely overlap. Below is the affordable end anyway: the county’s most affordable scored ZIPs, ranked by median home value with each ZIP’s score shown. Refreshed October 2026.

  1. 1
    63386
    West Alton, MO
    $174,488
    HavenScore: 56
  2. 2
    63373
    Portage des Sioux, MO
    $247,162
    HavenScore: 55
  3. 3
    63301
    Saint Charles, MO
    $319,714
    HavenScore: 53
  4. 4
    63376
    Saint Peters, MO
    $330,402
    HavenScore: 58
  5. 5
    63303
    Saint Charles, MO
    $358,078
    HavenScore: 55
  6. 6
    63366
    O Fallon, MO
    $365,128
    HavenScore: 54
  7. 7
    63385
    Wentzville, MO
    $402,962
    HavenScore: 57
  8. 8
    63304
    Saint Charles, MO
    $405,554
    HavenScore: 56
  9. 9
    63368
    O Fallon, MO
    $417,069
    HavenScore: 56
  10. 10
    63367
    Lake Saint Louis, MO
    $443,036
    HavenScore: 59

Saint Charles County against Missouri

The middle scored ZIP in each: 13 ZIPs in Saint Charles County, 764 in Missouri. HavenScore, scored October 1, 2026. Typical home value: Zillow, August 2026.

FigureSaint Charles CountyMissouri
Typical home value, Zillow$403K$247K
HavenScore5554

Every scored ZIP in Saint Charles County, MO

All 13 scored ZIPs, A to Z by city. The list above ranks only the cheapest. HavenScore, scored October 1, 2026. Typical home value: Zillow, August 2026.

Each row: ZIP, city, HavenScore (0–100), typical home value (Zillow).

Cities in Saint Charles County

Related pages

Frequently asked questions

Why doesn't this list use the usual quality floor?
Cheapest-ZIPs lists normally include only ZIPs with HavenScore: 60 or above. No ZIP in Saint Charles County, MO clears that floor this month, so this page shows the county's most affordable scored ZIPs instead — with each ZIP's HavenScore shown, so the trade-off stays visible.
How is "most affordable" measured here?
ZIPs are ranked by median home value from lowest to highest across every scored ZIP in Saint Charles County, MO. Because no ZIP clears the quality floor this month, no score filter is applied to this list.
How often is this list updated?
This page refreshes monthly when our pipeline ingests new data from Zillow, Realtor, Redfin, and Census.