St. Louis County, MO Home Sale Statistics

St. Louis County is the largest housing market in Missouri: roughly 449,000 homes across 507 square miles and about 991,000 people. This page tracks what is happening across all of it.

Every figure here comes from a public source and carries the window it covers, so you can tell how old it is without having to guess.

The County Market Right Now

Source: Redfin, all home types, for the three months ending July 2026. Read 2026-09-08. “YoY” is the change against the same period last year.

Two of those numbers matter more than the headline price. 13 days is fast, against a national median of 49, and 47.3% selling above asking means a well-priced house here still draws competing offers. But a quarter of listings took a price cut, so the market rewards pricing correctly on day one and punishes testing a number.

How the County Compares

The county sits between the city and St. Charles County on price and below all of them on patience. This is the same window and the same source for every row:

Source: Redfin, all home types, three months ending July 2026. Read 2026-09-08. “YoY” is the change against the same period last year; “Days” is the median number of days a home spent on the market.

The whole metro clears in roughly two weeks against forty-nine days nationally. If you are moving here from somewhere slower, that is the single biggest adjustment: houses do not sit, and a weekend of thinking it over is often a weekend too long.

For the longer view, the Census Bureau puts the median value of an owner-occupied home in the county at $276,800 and median gross rent at $1,209. About 69% of occupied homes are owner-occupied, across 448,637 housing units, and the county authorised 957 residential building permits in 2025, fewer than half what St. Charles County authorised with less than half the population.

Source: U.S. Census Bureau QuickFacts. Read 2026-09-08.

What a House Actually Sold For

Here is something specific to this county that the national portals do not surface.

Missouri is a non-disclosure state: sale prices are not public by default, which is why a sold listing on Zillow often reads “Price Unknown” and one on Realtor.com reads “Not disclosed.” Sellers find this out when they try to work out what the house down the street went for.

St. Louis County is an exception in practice. County Ordinance 13,329 requires a Certificate of Value to be filed when a deed is recorded, and the Assessor publishes the price from it. In the county’s own words, the Sale Price is “the price at which the property sold as indicated in the certificate of value (COV) document.”

You can look it up yourself. Go to the St. Louis County Assessor’s real estate search, choose the Property Address option, search the address, then open the Property tab. It carries the dwelling card and the full sales history with prices.

What the Numbers Do Not Tell You

A county median is one number covering ninety-odd municipalities and half a million homes. It is a useful reading of the whole market and it will not price your house.

Two houses on opposite sides of one street in St. Louis County can sit in different municipalities, different school districts and different fire districts, and be worth different money for that reason alone. None of that is implied by the mailing address, and none of it shows up in a countywide figure.

If you want to know what a specific area is like rather than what the county average is, the place to start is the guide for that area:

And if you are trying to work out what your own house is worth, a median will not do it. That needs someone to look at your house, your street and what has actually closed nearby, which is the part of this job that does not come out of a spreadsheet.