DC and Baltimore starter map

DC and Baltimore: 5 regions on their counties, each in the colour it wears in the list below.

Five regions on county lines: Washington, Northern Virginia, the Maryland suburbs, Baltimore and the western suburbs toward the mountains.

In the editor each region takes a level with one click. When one region needs more detail, split it into its counties and set them one by one; merge it back when they agree.

Regions in this starter map

Washington, DC1 countyDistrict of Columbia, DC
Northern Virginia9 countiesArlington County, VA · Fairfax County, VA · Loudoun County, VA · Prince William County, VA · Alexandria city, VA · Falls Church city, VA · Fairfax city, VA · Manassas city, VA · Manassas Park city, VA
Maryland suburbs4 countiesMontgomery County, MD · Prince George's County, MD · Charles County, MD · Calvert County, MD
Baltimore6 countiesBaltimore city, MD · Baltimore County, MD · Anne Arundel County, MD · Howard County, MD · Harford County, MD · Carroll County, MD
West toward mountains4 countiesFrederick County, MD · Washington County, MD · Clarke County, VA · Fauquier County, VA

County lines from the Census Bureau, coastline from Natural Earth.