This chart and map track recent movements in single-family home sales in Carroll and Howard counties by ZIP Code. The chart lists sales volume and median price for December 1990, the most recent month available, and for the full year. The map reflects the percentage change between the year-to-date median price for December 1990 and the year-to-date figure for December 1989. ZIP codes in which there have been fewer than 10 transactions will be listed as "no change," with an asterisk (*).

In future weeks, similar charts and maps will appear for Harford County (March 24). A metrowide roundup of sales activity will appear March 31. Information for Baltimore and Baltimore County will appear April 7; Anne Arundel County, April 14. Information about Carroll and Howard counties will be updated and appear again April 21. The information is provided by Rufus S. Lusk & Son Inc.