Honeycomb filter

A honeycomb filter comprising:

• a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells which serve as fluid through channels extending from a first end face to a second end face;
• and
• a plugging portion provided at an open end on the first end face or the second end face of each of the plurality of cells, wherein
• a thickness of the partition wall is 0.236 mm or more and 0.257 mm or less,
• a porosity of the partition wall is 52.2 to 56.9%,
• an average pore diameter of the partition wall is 7 to 13 μm,
• a number per unit area of pores which exist at a surface of the partition wall and which have equivalent circle opening diameters exceeding 3 μm is 1000 to 1380/mm2,
• an average equivalent circle opening diameter of pores which exist at the surface of the partition wall and which have equivalent circle opening diameters exceeding 3 μm is 8.0 to 9.7 μm, and
• in a pore diameter distribution of the partition wall, in the case where a pore diameter (μm) whose cumulative pore volume is 10% of a total pore volume is denoted by D10, a pore diameter (μm) whose cumulative pore volume is 50% of the total pore volume is denoted by D50, and a pore diameter (μm) whose cumulative pore volume is 90% of the total pore volume is denoted by D90,
• D10 is 2.0 to 4.4 μm,
• D90 is 13.0 to 21.2 μm, and
• (Log(D90)−Log(D10))/Log(D50) is 0.84 or less.