Monument of Cecilius Calvert which stands in front of the Court House in the City of Baltimore Click the picture to see a larger version The Preakness Preakness History How It got Its Name A Little More History Preakness Traditions Below is some interesting census information about Baltimore City. Look at the way the county population has changed over the years! Population Information for Baltimore City Population % of MD Population 1790 Census 13,503 4.2% 1890 Census 434,439 41.7% 1990 Census 736,014 15.4% 2000 Census 651,154 12.3%