The median selling price in May decreased in 57% of Orange County ZIP codes compared with last year.

According to Attom, among the 83 local ZIP codes with sales in May, prices increased in 36 of them, and they decreased in 47.

The most expensive ZIP code, with five or more sales, was Newport Beach, which has a median price of $6.6 million. In contrast, the cheapest was $495,000 in Laguna Woods.

Sales increased in 31 ZIP codes, decreased in 47 and remained unchanged in five. The busiest ZIP code was Irvine, with 75 sales.

Overall, the countywide median price of $1.2 million remained flat over the past 12 months. Total sales reached 2,154, representing an 8% decrease compared with the previous year.