Any county not listed for this state is $37 unless otherwise indicated.

1790 Census 
Maryland - $97 for the state 

1800 Census 
Maryland -  $9 for the county of Montgomery
           $37 for the city of Baltimore
           $37 each for the counties of Allegany, Anne Arundel, 
                      Calvert, Caroline, Cecil, Charles, Dorchester, 
                      Frederick, Harford, Kent, Prince, Georges, 
                      Queen Annes, St. Mary's, Somerset,
                      Talbot, Washington, Worcester  

1810 Census
Maryland - $37 each county except for Baltimore Cty. (including 
                      the City) which is $97

1820 Census
Maryland -  $9 for the county of: Somerset
           $37 each for the counties of Allegany, Baltimore (excluding
                      the City), Calvert, Caroline, Cecil, Charles, 
                      Hartford, Kent, Montgomery, Prince Georges, Queen 
                      Annes, St. Mary's, Talbot, Washington, Worcester    
           $57 each for the counties of Baltimore, Anne Arundel, 
                      Dorchester, Frederick                      
           $97 for City of Baltimore

1830 Census 
Maryland - $37 each for the counties of Baltimore (excluding the City),
                      Calvert, Caroline, Cecil, Charles, Dorchester, 
                      Harford, Kent, Talbot, Washington, Worcester
           $57 each for the counties of Allegany, Anne Arundel, Frederick  
           $97 for city of Baltimore (not included with the county)

1840 Census 
Maryland - $57 each for the counties of Caroline, Cecil, Harford, 
                      Kent, Prince George, Queen Anne, St. Marys, 
                      Somerset, Talbot, Washington
           $97 each for the counties of Allegheny, Anne Arundel, 
                      Baltimore Cty. (excluding the city of Baltimore), 
                      Dorchester, Frederick, Montgomery, Worchester
           $57 each ward in the city of Baltimore

1850 Census 
Maryland - $57 each county for "free" schedules except as follows: 
           $97 each for the counties of Allegheny, Anne Arundel,
                      Carroll, Dorchester,  Washington, Worchester  
          $147 for the county of Frederick
           $57 for each district of Baltimore Cty. (excluding the city
                      of Baltimore) 
           $57 each ward in the city of Baltimore
           $27 each county for "slave" schedules

1860 Census
Maryland - "free" schedules
           $57 each for the counties of Calvert, Caroline, Charles, 
                      Dorchester, Howard, Kent, Montgomery, Prince 
                      Georges, Queen Annes, St. Mary's
           $97 each for the counties of Allegany, Anne Arundel, Carroll,
                      Cecil, Harford, Somerset, Talbot, Washington, 
                      Worcester 
          $147 for Frederick County  
    City of Baltimore - $57  each  ward except #3  which is $97 
    Baltimore Cty. (excluding the city of Baltimore), 
           $37 each for districts 3,4,5,6,7,8,9         
           $57 each for districts 1,2,10,11,12,13
           $27 each county for "slave" schedules

1870 Census
Maryland - $97 each county except as follows:
           $57 each for the counties of Calvert, Caroline, Somerset, 
                      Talbot 
          $147 each for the counties of Allegany, Baltimore (excluding 
                      the city of Baltimore), Frederick, Washington
    City of Baltimore - $57 each ward except #3 which is $97

1880 Census
Maryland - $37 each county except as follows:
           $57 each for the counties of Anne Arundel, Caroline, 
                      Carroll, Cecil, Charles, Dorchester, Frederick, 
                      Harford, Howard, Kent, Montgomery, St. Mary's, 
                      Talbot, Washington  
          $197 each for the counties of  Allegany, Baltimore (excluding 
                      the city of Baltimore), Prince Georges, Worcester
    City of Baltimore - $57 for each ward 
    OR  $22 each Enumeration District (EDs) 

1900 Census 
Maryland - $57 each county except as follows:
           $97 each for the counties of Allegany, Anne Arundel, 
                      Frederick, Harford, Washington, Worcester
    City and County of Baltimore is not available at this time
    (contact host thru "Comments" for way to reduce this significantly)

1910 Census
Maryland - $57 each county except for the following:
           $97 each for the counties of Allegany, Anne Arundel, 
                      Frederick, Washington
    City and County of Baltimore - is not available at this time
    (use "Comments" to contact us for way to reduce cost of
    populous counties)

1920 Census 
Maryland - $27 for the county of: Prince Georges
           $37 each for the counties of: Caroline, Garrett, Harford, 
                      Howard, Queen Annes, St. Mary's, Talbot, Worcester
           $57 each for the counties of: Carroll, Cecil, Charles, 
                      Dorchester, Montgomery, Somerset, Wicomico
           $97 each for the counties of Anne Arundel, Frederick, Kent
          $147 each for the counties of Allegany, Washington 
    Baltimore City & City of Baltimore are not available at this time.
    (use "Comments" to get info on reducing cost of populous areas)