An electromagnetic induction position detection sensor comprising: a plurality of loop coils (21, 22), each of which is an N-turn loop coil formed by winding a conductor N times, each coil turn having short side portions and long side portions that are separated by a predetermined width and that are parallel to each other, the loop coils (21, 22) being arranged at predetermined intervals in a predetermined direction intersecting the long side portions of the loop coils in such a manner as to overlap one another, said electromagnetic induction position detection sensor comprising: a first loop coil group that includes a plurality of loop coils (X 0, X 1,...) arranged at predetermined intervals in a first direction intersecting long side portions of the loop coils; and a second loop coil group that includes a plurality of loop coils (Y 0, Y 1,...) arranged at predetermined intervals in a second direction intersecting the first direction, characterized in that N is an integer equal to or greater than 2 and in that the short side portions of the second loop coil group are arranged in a densely packed manner in a predetermined area of an edge portion of the sensor in the first direction, and the length of the short side portion of at least one of the N turns of the second loop coil (21X 1) from the edge portion of the sensor in the first direction in the first loop coil group is larger than the length of the short side portion of other turns of the second loop coil, with the long side portion of said turn of the second loop coil arranged more outward than the long side portions of the other turns of the second loop coil, with the long side portion of said turn of the second loop on the edge portion side being arranged adjacent to the long side portion of the first loop coil (21X 0) from the edge portion of the sensor in the first loop coil group that is on the edge portion side, to thereby straddle said predetermined area. a plurality of loop coils (21, 22), each of which is an N-turn loop coil formed by winding a conductor N times, each coil turn having short side portions and long side portions that are separated by a predetermined width and that are parallel to each other, the loop coils (21, 22) being arranged at predetermined intervals in a predetermined direction intersecting the long side portions of the loop coils in such a manner as to overlap one another, said electromagnetic induction position detection sensor comprising: a first loop coil group that includes a plurality of loop coils (X 0, X 1,...) arranged at predetermined intervals in a first direction intersecting long side portions of the loop coils; and a second loop coil group that includes a plurality of loop coils (Y 0, Y 1,...) arranged at predetermined intervals in a second direction intersecting the first direction, characterized in that N is an integer equal to or greater than 2 and in that the short side portions of the second loop coil group are arranged in a densely packed manner in a predetermined area of an edge portion of the sensor in the first direction, and the length of the short side portion of at least one of the N turns of the second loop coil (21X 1) from the edge portion of the sensor in the first direction in the first loop coil group is larger than the length of the short side portion of other turns of the second loop coil, with the long side portion of said turn of the second loop coil arranged more outward than the long side portions of the other turns of the second loop coil, with the long side portion of said turn of the second loop on the edge portion side being arranged adjacent to the long side portion of the first loop coil (21X 0) from the edge portion of the sensor in the first loop coil group that is on the edge portion side, to thereby straddle said predetermined area. a first loop coil group that includes a plurality of loop coils (X 0, X 1,...) arranged at predetermined intervals in a first direction intersecting long side portions of the loop coils; and a second loop coil group that includes a plurality of loop coils (Y 0, Y 1,...) arranged at predetermined intervals in a second direction intersecting the first direction, characterized in that N is an integer equal to or greater than 2 and in that the short side portions of the second loop coil group are arranged in a densely packed manner in a predetermined area of an edge portion of the sensor in the first direction, and the length of the short side portion of at least one of the N turns of the second loop coil (21X 1) from the edge portion of the sensor in the first direction in the first loop coil group is larger than the length of the short side portion of other turns of the second loop coil, with the long side portion of said turn of the second loop coil arranged more outward than the long side portions of the other turns of the second loop coil, with the long side portion of said turn of the second loop on the edge portion side being arranged adjacent to the long side portion of the first loop coil (21X 0) from the edge portion of the sensor in the first loop coil group that is on the edge portion side, to thereby straddle said predetermined area.