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. Do not use the names associated with ZIP codes or the name of a neighborhood, community, or subdivision not included on the census map. If the road type is Freeway, set the city as None (except in Baltimore City), regardless of the location, as this helps with routing. Be sure to also set the city name of any alternate names correctly. Please discuss any deviations from this guidance in the Maryland Forum.
- 2010 CDP Maps (PDFs by county with street overlays)
- List of Incorporated Places in Maryland (Wikipedia)
- List of Census-Designated Places in Maryland (Wikipedia)