Mapped: Orange County homes sales plunge 31% — how’d your ZIP fare in mid-January?

For the 22 business days ending Jan. 17, Orange County home sales fell 31.4 percent in a year as prices rose 0.1 percent, CoreLogic reported.

Countywide, 2,102 homes sold vs. 3,064 a year earlier. Of 83 Orange County ZIPs tracked, sales rose in 12.

The overall median price was $700,000 — up $1,000 in 12 months — with appreciation in 45 of 83 ZIPs.

Here’s how key Orange County market niches fared in the past year …

Existing single-family homes: 1,218 sold — down 25 percent. Median rose 1 percent to $747,500 in a year.

Existing condos: 543 sold — down 30 percent. Median fell 2 percent to $482,000 in a year.

New Construction: Builder sold 341 residences — down 49 percent. Median rose 16 percent to $990,000 in a year.

And here’s a look at two key market slices by price …

ZIPs with median price $500,000 or less: 7 vs. 7 a year earlier. In these “affordable” ZIPs, sales were 134 — down -5 percent vs. the $500,000-or-less communities a year ago.

Million-dollar ZIPs: 15 vs. 10 a year earlier. In these seven-figure ZIPs 450 homes sold — up 61 percent vs. neighborhoods in the millions a year ago.

Check out the map for ZIP-by-ZIP data on recent homebuying trends!