▁B owie , ▁Cl inton , ▁Brand yw ine , ▁Wald orf , ▁or ▁Forest ville ▁to ▁find ▁department ▁stores . ▁Upper ▁Mar l bor o ▁is ▁convenient ▁to ▁employees ▁comm uting ▁to ▁locations ▁along ▁Maryland ▁Route ▁ 4 ▁or ▁US ▁Route ▁ 3 0 1 , ▁such ▁as ▁J oint ▁Base ▁Andrew s ▁and ▁the ▁U . S . ▁Census ▁Bureau . ▁ ▁The ▁Town ▁of ▁Upper ▁Mar l bor o ▁is ▁often ▁mistaken ▁for ▁the ▁surrounding ▁un in cor por ated ▁area ▁of ▁Gre ater ▁Upper ▁Mar l bor o , ▁with ▁a ▁population ▁of ▁nearly ▁ 2 0 , 0 0 0 ▁in ▁an ▁area ▁of ▁ ▁( as ▁designated ▁by ▁the ▁post ▁office ). ▁ ▁Cl imate ▁The ▁climate ▁in ▁this ▁area ▁is ▁character ized ▁by ▁hot , ▁hum id ▁sum mers ▁and ▁generally ▁m ild ▁to ▁cool ▁winter s . ▁ ▁According ▁to ▁the ▁Kö ppen ▁Cl imate ▁Classification ▁system , ▁Upper ▁Mar l bor o ▁has ▁a ▁hum id ▁subt rop ical ▁climate , ▁abbre vi ated ▁" C fa " ▁on ▁climate ▁maps . ▁ ▁Bod ies ▁of ▁water ▁Inside ▁of ▁the ▁city ▁of ▁Upper ▁Mar l bor o , ▁there ▁are ▁three ▁bodies ▁of ▁water : ▁Federal ▁Spring ▁Branch , ▁Western ▁Branch ▁Pat ux ent ▁River , ▁and ▁School ▁House ▁P ond . ▁Federal ▁Spring ▁Branch ▁flows ▁into ▁the ▁Western ▁Branch ▁Pat ux ent ▁River ▁nearby ▁Main ▁Street , ▁Upper ▁Mar l bor o . ▁School ▁House ▁P ond ▁is ▁to ▁the ▁south ▁ ▁of