The following census's were compiled by Betty Robinson, who was a former resident of McKean County, PA. The material was supplied by Larry Richmond, a local genealogist. The following is taken from Betty's notes regarding the census data

"Where McKean County is concerned, the census taker left a few questions regarding some households. In these he will list "head of the household" to be a male name, but then there will not be a male given by age old enough to be said "head of household". We can only presume that said male was either deceased or living elsewhere at the time the census taker called on that household. Where you find this is the case, I especially double-checked those households to make certain I had not overlooked a male member, and I hadn't."

Regarding the 1810 and 1820 census data: "Note: They were interested in those of military age since this was just after the War of 1812. This is why they included the extra columns on the male side. You will also have to make note that a boy between the ages of 16-18 would actually be listed twice, once with his own age group and again in the following column for males 16-26." Groupings for the 1810 and 1820 : 1810 - 1820

Regarding the 1830 and 1840 census: "Both sexes were divided into "narrower" categories by ages, with thirteen possible age groupings given for both males and females. These are: -5 , 5-10, 10-15, 15-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90, 90-100, 100+. 1840 also took a special listing of all Revolutionary War veteran pensioners or widows of Revolutionary War veterans who were receiving pensions on their deceased husband's service. These are shown at the bottom of the sheet on which said pensioner is found. By rechecking the "age" columns, you can ascertain with whom they were living." "Total population for the county during the 1830 Census was 1,439, including 1 negro male, age 10-24. Orlo J. Hamlin, census taker, R. Chadwick, Proty, Rec., Geo. Darling, Coroner, Solomon Sartwell, Jr., Sheriff, David Crow. The county is 40 miles E and W and averages at least 20 miles N and S."

As to all census data: "These census years and those followed up through 1880 are available on inter-library loan to any library that has micro-readers available. You may want to "read" the original microfilm yourself to verify the names and numbers in families. The lists have been checked and rechecked but occasionally an error may exist in spite of this. I did try to be as accurate as possible."

The censused families have been alphabetized for your convenience.

1810 CENSUS

• Ceres - only census taken.

1820 CENSUS

• Ceres Township
  
• Sergeant Township
  
• Shippen Township
  

1830 CENSUS

• Bradford Township
  
• Ceres Township
  
• Corydon Township
  
• Keating Township
  
• Liberty Township
  
• Sergeant Township
  
• Shippen Township
  

1840 CENSUS

• Bradford Township
  
• Ceres Township
  
• Corydon Township
  
• Hamilton Township
  
• Keating Township
  
• Liberty Township
  
• Sergeant Township
  
• Shippen Township
  

Free White Males:

• Column 1: Under 10
• Column 2: Of 10 & under 16
• Column 3: Of 16 & under 26, including heads of families
• Column 4: Of 26 & under 45, including heads of families
• Column 5: Of 45 years & upwards, including heads of families
  [five columns in all]

Free White Females:

• Column 1: Under 10
• Column 2: Of 10 & under 16
• Column 3: Of 16 & under 26, including heads of families
• Column 4: Of 26 & under 45, including heads of families
• Column 5: Of 45 years & upwards, including heads of families
  [five columns in all]