"Table 4-5 Description of cells used for household poststratification ",,, Cell description,,Categories,Control totals Region (4) × MSA Status (4),10,"Northeast, NonMSA","1,822,510" ,11,"Northeast, Central County MSA","12,942,285" ,12,"Northeast, Outlying County MSA","1,025,560" ,13,"Northeast, MSA and NonMSA Counties","4,495,267" ,20,"Midwest, NonMSA","6,676,968" ,21,"Midwest, Central County MSA","16,008,030" ,22,"Midwest, Outlying County MSA","2,049,534" ,30,"South, NonMSA","11,929,300" ,31,"South, Central County MSA","22,192,294" ,32,"South, Outlying County MSA","3,893,620" ,40,"West, NonMSA","3,242,221" ,41,"West, MSA","19,202,512" " Source: 2002 Transportation Availability and Use Study",,,