Ho Chi Minh City is broken up into 24 districts (quận) , which themselves are broken up into a total of 259 wards. They are like neighborhoods. Hà Nội có quận và phường cũng thế.
My V->E dictionary has this as "guild, block, ward, group, gang". So an "association", perhaps? "Ward" in this sense is uncommon, and applies only to political districts.