The cross sections and angular correlations for neutron decay into various states in the residual nucleus following the B10(e,e'n) reaction have been measured over the excitation energy range of 18-33 MeV at an effective momentum transfer of 0.56 fm-1. In the giant resonance, neutron emission leads to the population of two higher excited states in addition to the ground-state transition: 6.97 MeV 7/2-(n5) and 11.70 MeV 7/2-+12.06 MeV 3/2-(n6,7). This is the first observation of the neutron population of these states. The angular correlations for n0 show a strong forward-backward asymmetry, which suggests interference from a transition with the opposite parity to E1. The angular correlations for n5 and n6,7 have a peak shift of about 50° at lower excitation energy and recover above about 24 and 25 MeV for n5 and n6,7, respectively. Their patterns are considerably different from that for n0. The angular correlations for each transition were fitted with a Legendre polynomial. The longitudinal-transverse interference coefficient C2/A0 is negligible for all populations. For n0 decay, all Legendre coefficients bi are positive, but b2 and b3 for the n5 and n6,7 decays are negative at lower excitation energy, and the latter causes a shift of the forward peak. The negative values may come from the signs of the phase differences of cosdelta21 and cosdelta20. The B10(e,e'n) cross section measured up to Ex~32 MeV agrees well with that of B10(gamma,n), except for a peak at 23 MeV of the giant resonance. In comparison with shell-model calculations, the partial cross section for n0 is sizable up to higher excitation energy, and predicted large partial cross sections populating the 6.97 MeV 7/2- and 11.70 MeV 7/2-+12.06 MeV 3/2- states in the giant resonance were not observed.