Clayton, St. Louis County, Missouri
Property Tax Rate
1.07% to 1.20% effective rate on market value
Published 2025 levies: $5.6556 to $6.3326 per $100 of assessed value (middle tax code $6.1406).
Covers every tax code of the Clayton School District (a district-level range: its tax codes cover several municipalities).
Missouri assesses homes at 19% of appraised value, so the effective rate is the levy times 0.19. A specific parcel pays the rate of its own tax code, and the bill follows its assessed value, which resets on the county's odd-year reassessment cycle.
In St. Louis County, homes that sold in 2024 were assessed in the 2025 reassessment at about 99% of the sale price on average (n=6,836; one standard deviation 78% to 121%). Missouri reassesses in odd-numbered years.
School District Outcomes
District at the center of the city: Clayton School District.
Clayton School District
| ELA performance index | 442.6 | Well Above State Average |
| Math performance index | 449.4 | Well Above State Average |
| Graduation-rate score | 100% | Near State Average |
| College and career readiness score | 100% | Above State Average |
Missouri DESE annual performance report (2025), student-outcome measures only. Tiers compare the district with all Missouri districts.
St. Louis County Market Momentum
Median list price
$209,925
Median $/sqft
$155
Median days on market
50
Source: FRED (Realtor.com series), as of 2026-09-01. County-level — the finest granularity FRED publishes.
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