1840 Federal Census of Ohio Border Counties -- King surname only
[note: trailing zeros are suppressed in the following listings]

Ashtabula County

     Almon King         Conneaut Twp.       10001 - 00001 [might be Ring]
     Elisha King        Conneaut Twp.       001000001 - 00000001
     George King        Richmond Twp.       122001 - 101001
     Howard King        Conneaut Twp.       0100001 - 000010101
     Jeremiah King      Kingsville Twp.     1010101 - 1121001
     Joslyn King        Conneaut Twp.       00120001 - 0100001 [might be Ring]
     Milton King        Lenox Twp.          10001 - 00001
     Nathan King        Geneva Twp.         11321001 - 001001
     Orrin King         Lenox Twp.          0010101 - 0001001
     Polly King         Conneaut Twp.       00001 - 000300001
     Squire King        Kingsville Twp.     00100001 - 01002
     William A. King    Ashtabula Twp.      0100001 - 1101001

Columbiana County (incl. the southern part of Mahoning until 1846)

     David King         West Twp.           0010001 - 0001001
     Ebenezer King      Middleton Twp.      
     Eleazer King       Unity Twp.          00001 - 0001
     Frederick King     New Lisbon          00001 - 0001
     George King        Butler Twp.         00001 - 00001
     Geo King           Springfield Twp.    200001 - 000001
     Henry King         West Twp.           111001 - 1122001
     Hugh King          Franklin Twp.       010010001 - 00010001
     Jacob King         New Lisbon          00000001 - 00000001
     John King          Goshen Twp.         01010001 - 00101001
     Maryann King       West Twp.           001 - 010000001
     Matthias King      Middleton Twp.      10001 - 00001
     Richard King       Liverpool           0111001 - 1010001
     Robert King        Knox Twp.           00001 - 00001
     Sampson King       Butler Twp.         0021001 - 101001
     Saml King          West Twp.           00001 - 10001
     Thos King          Franklin Twp.       01010001 - 0010001
     Thos King          Wellsville          000000001 - 01010001
     Thos King [Jr.]    Unity Twp.          00010001 - 00110001
     Thos King [Jr.]    West Twp.           010001 - 00011
     ??m. King          Middleton Twp.      210001 - 11001 [indexed as Wm]
     William King       Butler Twp.         001200001 - 0110001
     Wm King            West Twp.           1100001 - 02001

Jefferson County

     Charles C. King  Town of Mt. Pleasant  111101 - 101001
     James King         Smithfield Twp.     20011 - 10001
     Jonathan King      Cross Creek Twp.    0000001 - 03001 [Joseph Porter next]
     Matthew King     Town of Steubenville  00011 - 10001
     Samuel King        Mt. Pleasant Twp.   "free colored":100100 - 00100
     Stephen King       Warren Twp.         1131201 - 1201301
     William King     Town of Steubenville  00000001 - 01000011

Trumbull County (incl. the northern part of Mahoning until 1846)

     Calvin King        Fowler Twp.         11001 - 1xx01 [xx as written]
     David B. King      Howland Twp.        0020001 - 0021001
     Edward King        Youngstown (Twp?)   000011 - 01001
     Edward W. King     Warren Village      10001 - 00001
     George King        Vienna Twp.         210001 - 020001
     Henry King         Berlin Twp.         20001 - 00001
     Henry M[?]         Youngstown (Twp?)   210101 - 010001 [could be Mc or M.]
     James King         Barzetta Twp.       0010002 - 010021 [looks like Ring]
     James S. King      Farmington Twp.     00000001 - 000001 [James Piper next]
     John King          Howland Twp.        00013001 - 00100001
     John King          Lordstown           00001 - 20001
     Jonathan King      Berlin Twp.         002001 - 101001
     Leicester King     Warren Village      00220001 - 011011
     Lyman King         Newton Falls        030011 - 002001
     Marinus King       Coitsville          10001 - 21001
     Mary King          Howland Twp.        00101 - 0000001
     Mathew W. King     Farmington Twp.     00001 - 10001
     Richard King       Gustavus Twp.       01110001 - 0011001
     Richard S. King    Gustavus Twp.       1002 - 00101
     Ru[b]in King       Mesopotamia Twp.    111001 - 01001 [indexed as Rulin]
     Samuel King        Howland Twp.        0020011 - 0002001
     Singleton King   Village of Youngstown 0212101 - 200101
     Walter King        Warren Village      110110101 - 01101101
     Wm King            Fowler Twp.         00001 - 00001
     Wm King            Howland Twp.        0011001 - 002001001