Seneca information on the site is deemed reliable, but not guaranteed. Our Seneca stats, Seneca census, and Seneca information is aggregated from many different sources and may be dated. Currently, we have four Seneca foreclosures of fourteen thousand seven hundred ninety-four Seneca, New York housing units housing units, of which twelve thousand six hundred thirty are occupied, nine thousand three hundred twenty are owner occupied, three thousand three hundred ten are rented, two thousand one hundred sixty-four are vacant, and four thousand one hundred seventy-one have mortgages. has twelve thousand six hundred thirty households, and thirty-three thousand three hundred forty-two citizens.