St. Louis County, MO Property & Market Data

St. Louis County, Missouri has 402,465 parcels tracked in the Rippleffekt property database, 100% of them mapped to a precise location, a median household income of $84,109, and an unemployment rate of 4.2%.

St. Louis County at a glance

Rippleffekt tracks 402,465 parcels in St. Louis County, Missouri. The figures below combine county assessor coverage with federal economic data for the county.

402,465
Parcels tracked
100%
Mapped to location
402,465 parcels
508 sq mi
Land area
792.3 per sq mi
Parcel density
$84,109
Median household income
4.2%
Unemployment rate

Tax lien activity

Public tax-lien records on file for St. Louis County. Delinquent tax liens can signal distressed or motivated ownership.

1,091
Tax lien records

Missouri commercial real estate lending

Statewide commercial real estate lending context from FFIEC bank call reports as of 2024-12-31. This reflects the broader Missouri lending environment, not St. Louis County alone.

207
Banks reporting
$114.2B
Real estate loans
$41.6B
Nonresidential CRE loans

Go deeper on St. Louis County

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Sources: county assessor records, U.S. Census ACS and SAIPE, FFIEC bank call reports, and public tax-lien records. Updated 2026-07-29.