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

1790 Census
Connecticut - $97 for the state

1800 Census 
Connecticut - $37 each for the counties of Litchfield, New Haven, 
                     Tolland, Windham
              $57 each for the counties of Fairfield, Hartford, 
                     Midlesex, New London
 
1810 Census 
Connecticut - $57 each for the counties of Fairfield, Hartford
              $37 each for all other counties in this state

1820 Census
Connecticut - $37 each for the counties of Hartford, Middlesex, 
                     New London, Tolland 
              $57 each for the counties of Fairfield, Litchfield, 
                     New Haven, Windham

1830 Census 
Connecticut - $57 each for the counties of Litchfield, Middlesex, 
                     Tolland, Windham
              $97 each for the counties of Fairfield, Hartford, 
                     New Haven, New London

1840 Census 
Connecticut - $97 each for the counties of Litchfield, Middlesex, 
                     Tolland, Windham
             $147 each for the counties of Fairfield, Hartford, 
                     New Haven, New London

1850 Census 
Connecticut - $97 each for the counties of Middlesex, Tolland, Windham
             $147 each county Fairfield, Litchfield, New London
             $197 each county Hartford, New Haven

1860 Census 
Connecticut - $97 each for the counties of Tolland, Middlesex
             $147 for each of the counties of Litchfield, Windham
             $197 for each of the counties of Hartford, New London, 
                      New Haven (excluding the City of New Haven)
             $247 for the county of Fairfield
              $37 each district in the city of Hartford
              $37 each ward in the city of New Haven

1870 Census 
Connecticut - $97 for the county of Tolland
             $147 each for the counties of Litchfield, Middlesex, 
                      New Haven  (excluding the city of New Haven), 
                      New London, Windham
             $197 for the county of Hartford  (excluding the city of) 
             $297 for the county of Fairfield
    City of Hartford - $37 each ward
    City of New Haven - $37 each ward

1880 Census 
Connecticut - $97 each for City of Hartford, City of New Haven
              $97 each for the counties of  Litchfield, Middlesex, 
                       Windham
             $297 each for the counties of  Hartford (excluding the city
                       of Hartford), New Haven (excluding the city of 
                       New Haven), New London
                       OR  $24 each Enumeration District (EDs) 
             $347 for the county of  Fairfield
                       OR  $24 each Enumeration District (EDs) 

1900 Census 
Connecticut - $97 each for the counties of Middlesex, Tolland
             $147 each for the counties of Litchfield, Windham
             $197 for the county of New London 
   The counties of Fairfield, Hartford (including City of Hartford), 
   New Haven (including City of New Haven) are not available at this 
   time 

1910 Census 
Connecticut - $97 each for the counties of Litchfield, Middlesex, 
                       Tolland
             $197 for the county of Windham
             $297 for the county of New London 
   The counties of Fairfield, Hartford, New Haven are not available 
   at this time (use "Comments" to contact us for way to reduce cost 
   of populous counties)

1920 CENSUS 
Connecticut - Fairfield Cty., Hartford Cty., New Haven Cty. are not currently available.
        City of Danbury - $57
        City of Bridgeport - $237
              $97 for the county of Middlesex
             $197 each for the counties of: Litchfield, New London, 
                        Windham                            
              $57 for the county of Tolland 
   (use "Comments" to get info on reducing cost of populous areas)