New ZIP-Code Tool Maps Exactly What Buyers Can Afford Near You

Realtor.com's economic research team released a ZIP-code-level affordability mapping tool on September 10, 2026, that lets homebuyers see precisely what percentage of properties in any given neighborhood fall within their price range. The tool draws on estimated values for more than 100 million homes nationwide, covering price points from $100,000 all the way to $10 million. For sellers, the data offers a clear-eyed look at exactly how large — or how thin — the buyer pool is for their home, right now, at their asking price.

How the Tool Works and What the National Numbers Show

The analysis uses a straightforward income-to-price framework. A household earning the national median income of $83,700 can realistically target homes priced between roughly $250,000 on the conservative end and $418,000 at the upper limit, depending on down payment size, existing debt load, and current mortgage rates. At the $250,000 threshold, approximately 28% of existing homes nationwide fall within reach. Bump that budget to $418,000 and nearly 58% of the country's housing stock becomes attainable.

Those national percentages, however, mask enormous local variation. A buyer with $250,000 to spend will find far more options in Ohio than in California. Even within a single metro area, the share of affordable homes can swing dramatically from one ZIP code to the next. That neighborhood-by-neighborhood variation is precisely what the new tool is designed to surface.

The Extremes: Silicon Valley Penthouses and West Virginia Ghost Towns

The data exposes sharp divides at both ends of the affordability spectrum. Atherton, California — ZIP code 94027, a bedroom community deep in Silicon Valley — ranks as the least affordable ZIP code in the country. Even a $10 million budget covers only 59% of the homes there. Fisher Island in Miami Beach, Florida, comes in second. Aspen, Colorado's 81612 ZIP code rounds out the top three most exclusive markets, where $10 million still leaves 30% of properties out of reach.

At the opposite extreme, the analysis found just two ZIP codes in the entire country — both in the remote southern West Virginia mountain communities of Elbert and Squire — where a $100,000 budget is sufficient to purchase every single home. Seven of the ten most affordable ZIP codes overall are in West Virginia. The remaining three are in East St. Louis, Illinois, and Flint, Michigan — cities that have each lost substantial population over recent decades, leaving a surplus of homes and depressed values in their wake.

These extremes matter to sellers not as curiosities but as anchors. They illustrate how dramatically the buyer pool shifts with geography, and they underscore the point that listing price alone does not determine how many buyers can realistically compete for your home.

What This Means If You Are Planning to Sell

The most direct implication of this data for sellers is simple: your home is competing not just against other listings, but against the limits of what buyers in your market can actually spend. Knowing what share of homes in your ZIP code falls within the $250,000–$418,000 range — or whatever range matches your expected sale price — tells you how deep the buyer pool is before you even list.

In high-cost metros like San Francisco and San Jose, the tool's mapping shows that even a $1 million budget reaches only a small fraction of available homes. That scarcity can work in a seller's favor — fewer competing listings, motivated buyers — but it also means your buyer is financially stretched and more sensitive to appraisal gaps or rate fluctuations. Price accordingly and be prepared for contingencies tied to financing.

In markets like greater Chicago, where $400,000 covers a meaningful share of the downtown condo inventory and a majority of homes in suburbs like Cicero and Schaumburg, sellers face the opposite dynamic: genuine competition from comparable listings. Buyers have choices. Condition, staging, and negotiating flexibility matter more when a buyer can walk two blocks and find a similar unit within their budget.

In Austin, the picture is more fragmented. A $500,000 budget is competitive in northern suburbs like Round Rock and Georgetown, but it covers very little in the Hill Country communities to the west. Sellers in those western suburbs should expect a thinner, wealthier buyer pool — and should price and market accordingly, with less reliance on volume foot traffic and more focus on targeted outreach to qualified buyers.

For sellers in more affordable markets — particularly in the Midwest and parts of the South — the data is actually encouraging. When a large share of homes in your ZIP code fall within reach of median-income buyers, demand has a broader base. More households can qualify. That tends to produce faster sales and more competitive offer situations, provided the local economy is stable.

How to Use This Information Before You List

Before setting your list price, it is worth thinking through the buyer math directly. If your home is priced at $375,000, ask: what percentage of households in this ZIP code — or in ZIP codes where likely buyers currently live — can realistically reach that number? The Realtor.com tool gives you a framework to answer that question with real data rather than intuition.

Work with your agent to look at days-on-market and sale-to-list ratios specifically for homes in your price band within your ZIP code, not just the broader metro. A ZIP code where 70% of homes are affordable at your price point behaves very differently from one where only 20% are. The former is a seller's market by default; the latter requires you to earn every offer.

If you want a faster read on where your home fits in today's buyer landscape, an instant-offer tool can give you a baseline number grounded in current market data — a useful starting point before you commit to a list price strategy.

The underlying message from the Realtor.com data is one sellers should take seriously: affordability is not just a buyer problem. It sets the ceiling on who can compete for your home. Understanding that ceiling, ZIP code by ZIP code, is now easier than it has ever been.