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AddressselectedFirstmonthMailsurveyinstructionsoronlineorpaperresponseSecondmonthTelephoneollow-upornonresponseNo-responseollow-upSelectaddressesorpersonalvisitACSThirdmonthVisitno-responseaddressesorpersonalinterviewCaseComplete8HowACSDataAreCollectedAddressSelectionOneimportantacttorememberabouttheACSisthattheormsarenotmailedtospecicpeoplebutrathertospecicaddresses.Thesampleisdesignedtoensuregoodgeographiccoverageanddoesnottargetindividuals.ByocusingonqualitygeographiccoveragetheACScanproduceagoodpictureothecommunityspeopleandhousingbysurveyingarepresentativesampleothepopulation.TheCensusBureauselectsarandomsampleoaddressestobeincludedintheACS.Eachaddresshasabouta1-in-480chanceobeingselectedinamonthandnoaddressshouldbeselectedmorethanonceevery5years.TheCensusBureaumailsquestionnairestoapproximately295000addressesamonthacrosstheUnitedStates.Thisisasmallnumberohouseholdsconsideringtherearemorethan180millionaddressesintheUnitedStatesandanaddressthatreceivesACSinstructionswillnotlikelyndaneighbororriendwhohasalsoreceivedthem.AddressContactedbyMailTheCensusBureauinormspeoplelivingatanaddressthattheyhavebeenselectedtoparticipateintheACS.ShortlythereaterormostU.S.addressesinstructionsorcompletingthesurveyonlinearemailed.InPuertoRicoandsomehardtoreachareasintheU.S.onlyapaperquestionnaireismailed.HouseholdsareaskedtocompletethesurveyonlineortomailthecompletedpaperquestionnairebacktotheCensusBureausNationalProcessingCenterinJefersonvilleIndiana.ItheCensusBureaudoesnotreceiveacompletedsurveywithinaewweeksitwillmailanadditionalpapersurveyquestionnaire.