Published October 18, 2026 in Market Update

The tightest part of the Primary market is moving fast

These numbers cover the three months ending August 31, 2026. That matters, because the Primary market is not one big average. Some ZIP codes are moving quickly. Others are sitting longer. Knowing which one you are in changes what you should do next.

Realtor.com reported that the U.S. median listing spent 61 days on market in the week ending October 10, 2026. That is the national picture. Inside the Primary market, some ZIP codes are well below that number.

The tightest ZIP code: 85224

The Real Estate Data Aggregator counted just 2.2 months of supply in ZIP 85224 for the three months ending August 31, 2026. That is the lowest supply of any ZIP code in this market. Low supply means sellers face less competition.

The Real Estate Data Aggregator also counted 142 pending sales in 85224 for that same period. That is up 27.9% from the same months of 2025. Buyers are active here.

The Real Estate Data Aggregator shows 30.3% of homes in 85224 went under contract within two weeks of listing. That is nearly 1 in 3 homes. Price your home right and it can move fast.

One honest note: the median sale price in 85224 dipped 4.4% from a year ago, to $453,000, per the Real Estate Data Aggregator. Prices can move even when demand is strong. Pricing well still matters.

How the ZIP codes compare on speed

Speed varies a lot across the Primary market. The Real Estate Data Aggregator tracked median days on market for each ZIP code for the three months ending August 31, 2026.

ZIP 85225 had the fastest median at 41 days, per the Real Estate Data Aggregator. That is 8 days shorter than the same period in 2025. ZIP 85248 was the slowest at 73 days, though that is 12 days shorter than a year ago.

Which ZIP codes have the least supply

Homes going under contract in two weeks

This is the sharpest signal of where demand is strongest. The Real Estate Data Aggregator tracked the share of homes that went under contract within two weeks of listing, for the three months ending August 31, 2026.

The whole Primary market in context

Across all 12 ZIP codes together, the Real Estate Data Aggregator counted 1,766 homes sold in the three months ending August 31, 2026. That is up 4.4% from the same period in 2025.

The Real Estate Data Aggregator also counted 1,844 homes for sale across the Primary market. That is down 5.6% from a year ago. Fewer homes for sale, more homes sold: that combination favors sellers in general.

What the national picture adds

Freddie Mac reported the 30-year fixed mortgage rate averaged 7.40% as of October 15, 2026. That rate affects what buyers can afford, which in turn affects how many compete for each home.

The National Association of Realtors reported existing-home sales across the U.S. reached 3.99 million units in September 2026. National inventory rose to 1.60 million homes that same month, per the National Association of Realtors.

Realtor.com reported the U.S. median listing spent 61 days on market in the week ending October 10, 2026. Several ZIP codes in this market are well below that number, which means local conditions here differ from the national average.