Enumerators of the 1820 census were asked to include the following categories in the census: name of head of household, number of free white males and females in age categories: 0 to 10, 10 to 16, 16 to 26, 26 to 45, 45 and older; number of other free persons except Indians not taxed; number of slaves; and town or district and county of residence. Additionally, the 1820 census for the first time asked the number of free white males 16 to 18; number of persons to be naturalized; number engaged in agriculture, commercial, or manufacture; number of "colored" persons (sometimes in age categories); and number of other persons except Indians. The categories allowed Congress to determine persons residing in the United States for collection of taxes and the appropriation of seats in the House of Representatives. Most entries are arranged in the order of visitation, but some have been rearranged to appear in alphabetical order by initial letter of the surname. Manufacturing schedules are scattered among the 1820 population schedules.

The official enumeration day of the 1820 census was 7 August 1820. All questions asked were supposed to refer to that date. The count was due within six months, but the due date was extended by law to allow completion within thirteen months. By 1820, there were a total of twenty-three states in the Union. The six new states were Louisiana, Indiana, Mississippi, Illinois, Alabama and Maine. There was, however, a district wide loss for Arkansas Territory, Missouri Territory and New Jersey. Partial losses included half the counties in Alabama, and roughly 20 eastern Tennessee counties supervised by the Federal Court District out of Knoxville. Some of the schedules for these states have been re-created using tax lists and other records.

Taken from Chapter 5: Research in Census Records, The Source: A Guidebook of American Genealogy by Loretto Dennis Szucs; edited by Loretto Dennis Szucs and Sandra Hargreaves Luebking (Salt Lake City, UT: Ancestry Incorporated, 1997).

William Dollarhide, The Census Book: A Genealogist's Guide to Federal Census Facts, Schedules and Indexes, Heritage Quest: Bountiful, UT, 2000.

The following rolls of film have not yet been linked to federal census images by Ancestry.com, and thus can not be searched in this linked index, M33: 11, 56, 58, 83, 92, 108, 118-119, 122-125, 135, 142.
Ancestry.com records searched included;  Connecticut, Maine, Ohio, Delaware, Maryland, Pennsylvania, District of Columbia,  Massachusetts, Rhode Island, Georgia, Michigan Territory, South Carolina, Illinois, Mississippi, Tennessee, Indiana, New Hampshire, Vermont, Kentucky, New York, Virginia, Louisiana, North Carolina

Payatte, Patsy, Arkansas Co, AR, Unknown Township
Pouyott, Joseph, Pulaski Co, AR, 1829, Arkansas Territory
Peyatt, Andrew, Pulaski Co, AR 1829, Arkansas Territory
Peyatt, Jacob, Pulaski Co, AR, 1829, Arkansas Territory
Peyatt, James, Pulaski Co, AR, 1829, Arkansas Territory
Peyatt, James, Pulaski Co, AR, 1828, Arkansas Territory
Peyatte, Andrew, Pulaski Co, AR, 1828, Arkansas Territory
Peyatte, Jacob, Pulaski Co, AR, 1828, Arkansas Territory
Pyatt, Peter, Washington Co, AR 1828, Unknown Township
Pyeatt, Henry P., Washinton Co, AR 1828, Unknown Township
Pyiatt, Peter P., Washington Co, AR 1828, Unknown Township
Pyeatt, Andrew, Washington Co, AR, 1829, Cane Hill Township
Pyeatt, Jacob, Washington Co, AR 1829, Cane Hill Township
Pyeatt, John R., Washington Co, AR 1829, Cane Hill Township
Pyeatt, Peter, Washington Co, AR, 1829, Cane Hill Township
Pyeatt, Henry P., Washington Co, AR 1829, Vinyard Township
Pyeatt, Peter P., Washington Co, AR 1829, Vineyard Township
 

Piatt, Henry, Bond Co, IL,  Roll:M33_12, Hurricane Fork Township
Piatt, Henry, Bond Co, IL, Roll:M33_12, McCord Township
Piatt, Abraham, Franklin Co, IL, Roll:M33_11,  TownshipUnknown Township
Pyatt, E., Jackson Co, IL, Unknown Township
Pyatt, Samuel, Jackson Co, IL, Unknown Township
Pyatt, Henry, Montgomery Co, IL, Hurricane Fork Township

Piatt, James A, Franklin Co, IN, Roll:M33_13, Brookville Township

Pyat, Volentine, Bath Co, KY, Roll:M33_16, Bloomfield Township
Piatt, Jacob, Boone Co, KY, Roll:M33_18, Unknown Township

Pyatt, Jessee, Catahoula Parish, LA, Roll:M33_31, Unknown Township
Piat, M., New Orleans City Parish, LA, Roll:M33_32, New Orleans Township
Piat, M., Orleans Parish, LA, Marigny Faubourg Township
Piot, M., Orleans Parrish, Louisiana, New Orleans City
Pyatt, Antoine, Ouachita Parrish, Louisiana, Unknown Township
Pyatt, Francois, Ouachita Parrish, Lousiana, Township Unknown
Pyatt, Antoine, Ouachita Parish, Louisiana, Roll:M33_31, Unknown Township
Pyatt, Francois, Ouachita Parish. LA, Roll:M33_31, Unknown Township

Pyott, James, Frederick Co, MD, Roll:M33_43, Frederick Township
Piate, William, Queen Anne's County, MD, Roll:M33_45, Election District 2

 Peatt, Assa, Cumberland Co, Maine, Roll:M33_34, North Yarmouth Township

 Piatt, Joi, Wayne Co, MI 1827, Detroit Township

Puett, William, Burke Co, NC, Roll:M33_83, Unknown Township
Piett, Benjamin, Burke Co, NC,  Roll:M33_83, Unknown Township
Puett, John, Burke Co, NC, Roll:M33_83, Unknown Township
Puett, Joseph, Burke Co, NC, Roll:M33_83, Unknown Township
Piett, James, Burke Co, NC, Roll:M33_83, Unknown Township
Piett, Joseph, Jr, Burke Co, NC, Roll:M33_83, Unknown Township
 

Peatt, Stephen, Albany Co, NY, Roll:M33_63, Westerlo Township
Paot, Zadoe, Chatauqua Co, NY, Roll:M33_66, Ellicott Township
Piet, Aaron, Madison Co, NY, Roll:M33_73, Cazednovia Township
Peatt, Dr. William, New York Co, NY, Roll:M33_77, NYC Ward 3
Payatt, Joshua, New York Co, NY, Roll:M33_77, NYC Ward 5
Piatt, Edward, Niagara Co, NY,  Roll:M33_69, Clarence Township
Peatt, Charles, Ontario Co, NY, Roll:M33_62, Bristol Township
Peatt, David, Oswego Co, NY, Roll:M33_79, Oswego Township
Peatt, David, Oswego Co, NY, Oswego Township
Peatt, Charels, Tompkins Co, NY, Groton Township
Peatt, Thomas, Warren Co, NY,  Roll:M33_76, Bolton Township
Piate, Dr., Westchester Co, NY,  Roll:M33_75, North Salem Township
Piate, John, Westchester Co, NY, Roll:M33_75, North Salem Township

Pyeatt, Benjamin, Adams Co., OH, Roll:M33_86, Tiffin Township
Piatt, Moses,  Coshocton Co, OH, Roll:M33_88, Linton Township
Pyatt, Peter, Coshocton Co, OH, Roll:M33_88, Washington Township
Piatt, John H., Hamilton Co, OH,  Roll:M33_87,  Cincinnati, Ward 3
Peatt, Cornelius, Knox Co, OH,  Roll:M33_88, Union Township
Pyatt, John, Licking Co, OH,  Roll:M33_94, Madison Township
Pyatt, John, Monroe Co, OH, Roll:M33_88, Sunsbury Township
Piatt, John, Montgomery Co, OH, Roll:M33_94, Jefferson Township
Piatt, Stephen, Muskingum Co, OH,  Roll:M33_92, Hopewell Township
Pyeatte, Thomas, Richland Co, OH,  Roll: M33_92, Perry Township

Pyat, Benjamin, Allegheny Co, PA, Roll:M33_97, Pittsburg Township
Pyott, Richard, Chester Co, PA, Roll:M33_96, West Bradford Township
Peatt, Benjamin, Columbia Co, PA,  Roll:M33_101, Madison Township
Pyot, Alexander, Delaware Co, PA, Roll:M33_103, Upper Darby Township
Pyot, James, Delaware Co, PA, Roll:M33_103, Upper Darby Township
Pyot, Thomas, Delaware Co, PA, Roll:M33_103, Upper Darby Township
Peatt, Jonas, Greene Co, PA, Roll:M33_98, Morris Township
Piatt, John, Washington Co, PA, Roll:M33_113, Smith Township
 

Peyatt, Betsey, Charleston Co, SC,  Roll:M33_119, St James Goose Creek Township
Peyatt, Betsey, Charleston District County, SC, Unknown Township
Pyatt, John, Georgetown Co, SC, Roll:M33_120, Lampit Township
Pyatt, Joseph, Georgetown Co, SC,  Roll:M33_120, Lampit Township
Pyatt, John, Georgetown District County, SC, Unknown Township
Pyatt, Joseph, Georgetown District County, SC, Unknown Township
 

Pyatt, James, Augusta Co, VA, Roll:M33_132, Unknown Township
Pyatt, William, Augusta Co, VA,  Roll:M33_132, Unknown Township
Pyatt, Benjamin, Augusta Co, VA, Roll:M33_132, Unknown Township
Peatt, Moses, Hampshire Co, VA, Roll:M33_136, Unknown Township
 

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