Current Grain Valley median home price: $323,129
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2025 September | $329,332 | $296,399 | $362,265 |
| 2025 October | $330,939 | $297,845 | $364,033 |
| 2025 November | $332,553 | $299,298 | $365,808 |
| 2025 December | $334,175 | $300,758 | $367,593 |