10 ZIP codes saw inventory more than double in past year

Ten ZIP codes across the U.S. saw their active housing inventory more than double between July 2025 and July 2026, according to HavenScore's monthly inventory tracking based on Zillow data.

88008 in Santa Teresa, New Mexico led the surge with a 227% increase, jumping from 59 active listings in July 2025 to 193 listings in July 2026 per HavenScore's analysis. The community of roughly 6,000 residents near the Texas border saw the most dramatic inventory expansion among ZIP codes with at least 5,000 residents.

Buffalo, New York's 14207 ZIP code recorded the second-largest gain at 142%, rising from 31 to 75 active listings over the same period according to HavenScore data. Four Oaks, North Carolina (27524) rounded out the top three with a 140% jump from 20 to 48 listings.

Seven additional ZIP codes saw their inventory more than double:

• Cicero, Indiana (46034): 130% increase to 46 listings
• Fort Oglethorpe, Georgia (30742): 114% increase to 45 listings
• Warren, Ohio (44485): 114% increase to 45 listings
• Syracuse, New York (13204): 114% increase to 47 listings
• Dora, Alabama (35062): 114% increase to 47 listings
• McKeesport, Pennsylvania (15133): 113% increase to 49 listings
• Atoka, Oklahoma (74525): 113% increase to 51 listings

The inventory surges span geographically diverse markets from the Southwest to the Rust Belt, with no clear regional clustering in HavenScore's data. Most of these ZIP codes remain relatively small inventory markets despite the percentage gains, with current active listings ranging from 45 to 193 homes.

These dramatic increases contrast sharply with inventory conditions in some of the nation's most active markets. HavenScore's latest snapshot shows 33160 in North Miami Beach leading with 1,721 active listings, while Kissimmee, Florida (34747) has 1,150 listings and Hallandale, Florida (33009) shows 1,051 listings according to the platform's tracking.

The year-over-year comparison covers the period when mortgage rates remained elevated compared to pandemic-era lows, potentially contributing to increased inventory as buyer demand moderated in some markets. However, the specific drivers behind each ZIP code's inventory surge likely vary by local economic conditions and housing market dynamics.

Insights from HavenScore data

HavenScore's inventory tracking reveals how housing supply can shift dramatically even in smaller markets. While percentage gains appear large, the absolute inventory levels in these ZIP codes remain modest — most still have fewer than 200 active listings despite more than doubling their supply.

The geographic spread of these inventory surges suggests local rather than national factors may be driving the increases. Markets from New Mexico's border region to upstate New York industrial areas each face distinct economic pressures that could influence both buyer demand and seller behavior.

For context, these emerging inventory pockets contrast with established high-volume markets like South Florida and Texas suburbs, where absolute listing counts remain in the hundreds or thousands. The inventory dynamics in smaller ZIP codes may signal early shifts in regional housing patterns worth monitoring as market conditions evolve.