This chart and map track single-family home sales in Harford County by ZIP code. The chart lists sales volume and median price for September 1991, the most recent month available, and compares them to 1990 statistics. The map compares median prices during the first nine months of 1991 to the same period in 1990.

In future weeks, charts and maps will appear for:

* Baltimore and Baltimore County (Jan. 5);

* Anne Arundel County (Jan. 12);

* and Howard and Carroll counties (Jan. 19).

A regional roundup will appeare Dec 29. Data comes from Rufus S. Lusk & Son Inc.