Insert Values And Skip Blank Rows

I want my macro to consider the # of rows of data on a spreadsheet and insert values into columns for those rows but then stop when it hits a blank one. For simplified example below, I have 3 columns in my spreadsheet. Row 1 has headers of Location, Status, and Effective Date. The first 5 rows of data under the headers have a value in the Location column (San Jose, Oakland, etc). When I run the macro, I want it to insert a value of "ACTIVE" in the Status column for each row that has a value in the Location column. Also, a single Effective Date value is stored in a cell elsewere in the spreadsheet, and I want the macro to insert that value in the Effective Date column for each row that has a value in the Location column. When it hits a blank row - row 7 in this spreadsheet - I want it to stop.

Location| Status | Effective Date
San Jose
Oakland
Austin
Houston
Phoenix

I currently am using an IF statement in the Status column fields to say if Location = blank, then blank, else "ACTIVE". That works, except that the # of rows populated in Location column could be 5 or 1,000, and inserting the formula that many times seems to quickly increase the file size.