< USA | Mid Atlantic
Do not use the names associated with ZIP codes or the name of a neighborhood, community, or subdivision not included on the census map. Be sure to also set the city name of any alternate names correctly.
- Maryland: There are 157 incorporated places in Maryland. When assigning the city name to a road segment or landmark, use the name of the incorporated place or CDP (census-designated place). If it is outside the boundaries of either of those, set the city name as None. If the road type is Freeway, set the city as None (except in Baltimore City), regardless of the location, as this helps with routing.
- West Virginia: Despite its relatively small size, the Mountain State is home to approximately 3,100 cities, towns and small communities. To link them (and to provide an important part of the transport of the state’s abundant natural resources), there are some 36,000 miles of state-maintained highways that include 6,636 bridges (this figure does not include 238 railroad bridges, 117 city and county bridges, 99 West Virginia Turnpike bridges, 20 state park bridges, two private toll bridges and 132 other non-highway bridges).
- Washington DC: Washington is the only city in the District of Columbia and it spans the entire area.
- Virginia: There are 38 independent cities and 95 counties in the state. Proper naming information is still under discussion due to the highly urban nature of parts of northern Virginia