Affton, South St. Louis County
63123 Homes For Sale
Every active 63123 listing, including Affton homes the MLS lists as St. Louis.
New 63123 listings, sent by Craig himself
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86 homes for sale in 63123 right now
Active MLS list prices, houses, condos and townhomes, updated Oct 8, 2026.
Newest 63123 listings
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Recent comparable sales
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63123 takes in Affton and the unincorporated neighborhoods around it, just southwest of the St. Louis city line. Most of these homes carry a St. Louis mailing address, and many list their city as St. Louis in the MLS, so a search for Affton alone misses a lot of them. This page searches by ZIP, so every active 63123 listing counts.
What is for sale in 63123
63123 is mostly single-family homes: about 8 in 10 active listings, with the rest mainly condos. It is one of the older ZIPs in South County. The typical listing was built in the mid-1950s, and more than a quarter were built before 1950. Bungalows show up here far more often than in Oakville or Sappington. Homes run smaller, with a typical listing around 1,250 square feet and 3 bedrooms, which helps keep 63123 among the more affordable ZIPs this close to the city.
63123 neighborhoods with homes listed
The two Grove at Grant’s Trail sections had more active listings than anywhere else in the ZIP, and Southridge Condominiums led for condos. Lakewood and Providence Gardens also had homes listed. Part of 63123 sits inside the St. Louis city limits, so a few listings here are city homes with a 63123 ZIP.
63123 schools
63123 is split across four school districts, so the address matters here more than almost anywhere in South County. In early October 2026 the active listings were spread across Mehlville, Affton, Lindbergh and Bayless, with Mehlville and Affton each holding about a third. Tell us which district you want and we will only send 63123 listings inside it.
Why Work With Single Tree Team
Affton buyers and sellers deal with Craig directly. There is no call center and no handoff to someone you have never met. Ask what a house is really worth, or what it will take to sell yours, and you get a straight answer. Craig has been licensed since 2011.
New 63123 listings by email
See 63123 homes before you tour
We email each new 63123 listing the day it goes live in the MLS. Want only one school district? Reply and tell us which. Phone number optional, and Craig sets up the showings.
63123 Real Estate FAQ
How many homes are for sale in 63123 right now?
We count every Active house, condo and townhome in the 63123 ZIP, straight from the MLS, twice a day. Homes already under contract are left out, which is why other sites can show a bigger number.
Why does a search for Affton miss some 63123 homes?
Affton has no city government of its own, so most listings show St. Louis as the city. Counting by the 63123 ZIP picks all of them up.
Can I get new 63123 listings by email?
Yes, and you can limit it to one school district. Use the form at the top, and Craig will email new 63123 listings as they reach the MLS. No phone number required.
What school district is 63123 in?
It depends on the street. 63123 is split among the Affton, Mehlville, Lindbergh and Bayless school districts, and a few addresses are in St. Louis city. School assignments follow the address, so we check them for every home you consider.
Brokered By eXp Realty
Craig Ziegel, Broker | Single Tree Team | eXp Realty, LLC | Licensed in MO
