The suburbs of St. Louis contain the top five most expensive ZIP codes in Missouri.
In a recent study, we analyzed and identified the most expensive ZIP codes in states along the Mississippi River, including Arkansas, Illinois, Louisiana, Minnesota, and, of course, Mississippi. We wanted to continue this trek along the Mississippi and investigate the most expensive ZIP codes in Missouri.
For this article, we wanted to breakdown the most expensive ZIP codes in Missouri. Read on to find out the most expensive ZIP codes in Missouri in 2025, based on the latest data from Zillow’s home value index.
The Most Expensive ZIP Codes In Missouri
In order to identify the most expensive ZIP codes in each state, we turned to data from Zillow’s home value index, as well as the Census Bureau’s 2023 American Community Survey. We analyzed thousands upon thousands of ZIP codes throughout the U.S. as part of a national study, but here, we’re focusing on Missouri. The Zillow home value index tracks (as of February 2025) the home values of 1,084 ZIP codes in Missouri. As part of our analysis, we took into consideration the latest monthly home values Zillow has — February 2025 — as well as the average of 12 months of median home values from March 2024 to February 2025.
The Top 5 Most Expensive ZIP Codes In Missouri
ZIP code 63124 is the most expensive one in Missouri. This ZIP code is centered on the St. Louis suburb of Ladue, west of downtown. This ZIP code has been wealthy for a long time. Basically, half of all households earn $200,000 or more a year. The median household income is $188,750, while the average household income is substantially higher — $349,511. The median home value in ZIP code 63124 was already well above the home values of other expensive ZIP codes, having a median of $804,799 back in February 2020, a time when no other ZIP codes even exceeded $700,000. Five years later, that median had risen by 43.6%, reaching well over $1.155 million.
The second most expensive ZIP code — 63073 — is also west of St. Louis, centered on St. Albans, an unincorporated community next to the Missouri River. Well over half of all households in ZIP code 63073 earn $200,000 or more. The median household income is in excess of $250,000, while the mean household income is $347,637. Home value appreciation wasn’t as significant here as in the No. 1 most expensive ZIP code. From a median home value of $653,961 in February 2020, the median grew by 38.8%, reaching $907,541 in February 2025.
The No. 3 most expensive ZIP code in Missouri — 63131 — lies to the west of St. Louis, and covers places like Des Peres, Huntleigh, Frontenac, Crystal Lake Park, Country Life Acres, and Town and Country. This is another ZIP code where more than half of households make $200,000 or more per year. The median household income is quite high, at $209,306. The average household income is $335,161. Home values appreciated at rate similar to the No. 1 most expensive ZIP code. Over the last five years, the median home value in 63131 rose by 42.4%, from $619,252 in February 2020 to $882,115 in February 2025.