useum s ▁in ▁Spring field , ▁Missouri ▁Category : S ports ▁museum s ▁in ▁Missouri ▁Hall <0x0A> </s> ▁Ross ▁St ores , ▁Inc ., ▁operating ▁under ▁the ▁brand ▁name ▁Ross ▁D ress ▁for ▁Less , ▁is ▁an ▁American ▁chain ▁of ▁disc ount ▁department ▁stores ▁head qu arter ed ▁in ▁Dublin , ▁California . ▁It ▁is ▁the ▁largest ▁off - price ▁ret ail er ▁in ▁the ▁U . S ., ▁as ▁of ▁ 2 0 1 8 , ▁Ross ▁oper ates ▁ 1 , 4 8 3 ▁stores ▁in ▁ 3 7 ▁U . S . ▁states , ▁the ▁District ▁of ▁Columbia ▁and ▁Gu am , ▁covering ▁much ▁of ▁the ▁country , ▁but ▁with ▁no ▁presence ▁in ▁ ▁New ▁England , ▁New ▁York , ▁northern ▁New ▁Jersey , ▁Al aska , ▁Puerto ▁Rico ▁and ▁areas ▁of ▁the ▁Mid west . ▁ ▁According ▁to ▁SE C ▁fil ing , ▁" R oss ' ▁target ▁customers ▁are ▁primarily ▁from ▁middle ▁income ▁households ." ▁ ▁History ▁ ▁Ross ▁Department ▁Store ▁was ▁first ▁opened ▁in ▁San ▁Bruno , ▁California , ▁in ▁ 1 9 5 0 ▁by ▁Morris ▁" Mor rie " ▁Ross . ▁Morris ▁would ▁work ▁ 8 5 ▁hours ▁a ▁week ▁doing ▁all ▁of ▁the ▁bu ying ▁and ▁book keep ing ▁for ▁his ▁department ▁store . ▁In ▁ 1 9 5 8 ▁Ross ▁sold ▁his ▁store ▁to ▁William ▁Is ack son ▁to ▁become ▁a ▁resident ial ▁and ▁commercial ▁real ▁estate ▁developer . ▁Is ack son ▁built ▁the ▁company ▁to ▁six ▁stores , ▁located ▁in ▁San ▁Bruno