A fresh national ranking released March 16, 2026, confirms what a lot of San Antonians already suspected: the city’s richest ZIP codes are still packed tightly onto the North Side, where older, established neighborhoods share top billing with gated suburbs and master-planned enclaves. Geography, in other words, is still doing a lot of the work when it comes to who holds the most wealth in the Alamo City.
The update is part of the Business Journals’ second annual Wealthy 1000 analysis, which maps pockets of affluence across the country. According to the San Antonio Business Journal, ZIP codes 78248, 78209, and 78257 sit at the top of the local leaderboard when home values and incomes are combined. The data ranks ZIP codes nationally, then spotlights local standouts, and in San Antonio, that once again translates into a North Side-heavy map of advantage with only minor year-over-year shuffling.
North Side Dominance Has Deep Roots
Research from the Texas A&M Real Estate Research Center finds that nine of the ten most affluent ZIP codes in the metro are outside Loop 1604 to the north, northwest and northeast, with 78248 hugging the loop along its northern edge. Those patterns line up with where major employers, golf-course developments and gated subdivisions have piled up high-end housing over the years. The center’s analysis suggests the North Side’s grip on wealth is more baked-in structure than short-term market fluke.
How The Money Gets Counted
Tax-return data helps explain why certain ZIPs keep floating to the top. Adjusted gross income figures show ZIP 78257 at roughly $934,400 and 78209 at about $919,940, placing both among the city’s highest income pockets. Those IRS-based snapshots line up closely with the Wealthy 1000 results and clarify why these neighborhoods show up in national comparisons. The listing on ZIP Data and Maps provides the tax data used for the metro-level analysis.
What The Gap Looks Like On The Ground
Local government numbers drive home how far those top ZIPs sit from the city median. The City of San Antonio 2024 poverty report lists 78248 with a median household income of about $125,089, while the citywide median clocks in around $59,593, and the overall poverty rate stands at 17.7%. The same report notes that nearly half of renter households are cost-burdened, meaning they spend more than 30% of their income on housing. It is a sharp reminder that high ZIP-code averages can sit right next to persistent need, which is why planners and housing advocates keep drilling into ZIP-level data when they talk policy and equity.
Housing Market Sends Mixed Signals
Even inside those wealthy areas, the housing market is not moving in lockstep. Data from the San Antonio Board of Realtors, analyzed by Community Impact, show median home prices rising in most North San Antonio ZIP codes in March, while 78248 actually slipped, with its median dropping to about $510,000 from roughly $550,000 a year earlier. The SABOR numbers highlight how inventory, turnover and new construction can send one ZIP’s stats up while a neighbor’s cools off, which in turn can shuffle who lands where on national lists without really changing the broader map of where the money is…