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2000, 2007-2009 ACS, Census 2010 and 2010-2012 ACS

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Geographic Area: Polk County, Iowa FIPS: 19153

Download an Excel file* of this document: profile_iowa__polk_county.xls.

Table 1a. Mode to Work by Gender
Table 1a. Mode to Work by Gender 1 Census 2000 2007-2009 ACS 2010-2012 ACS Is the numeric change
between Census 2000 and 2010-2012
ACS Significant? **
Number Percent MOE(+/-)* Number Percent MOE(+/-)* Number Percent MOE(+/-)*
Male At Place of Residence
Total Workers 101,550 100.0 1,101 116,516 100.0 1,591 115,721 100.0 1,463 Yes
Drove alone 84,995 83.7 1,037 95,065 81.6 1,810 95,529 82.6 1,594 Yes
2-person Carpool 8,635 8.5 372 9,767 8.4 1,108 9,696 8.4 988 Yes
3-or-more-person Carpool 1,345 1.3 148 2,513 2.2 553 1,400 1.2 349 No
Transit 1,405 1.4 151 1,958 1.7 443 1,716 1.5 399 No
Bike 295 0.3 69 371 0.3 197 534 0.5 187 Yes
Walked 2,035 2.0 182 2,754 2.4 515 1,832 1.6 442 No
Taxi, Motorcycle and Other means 585 0.6 98 1,306 1.1 397 1,044 0.9 289 Yes
Worked at Home 2,250 2.2 191 2,782 2.4 483 3,970 3.4 653 Yes
Table 1b. Mode to Work by Gender
Table 1b. Mode to Work by Gender 1 Census 2000 2007-2009 ACS 2010-2012 ACS Is the numeric change
between Census 2000 and 2010-2012
ACS Significant? **
Number Percent MOE(+/-)* Number Percent MOE(+/-)* Number Percent MOE(+/-)*
Female At Place of Residence
Total Workers 96,635 100.0 1,083 109,103 100.0 1,989 109,535 100.0 1,956 Yes
Drove alone 77,540 80.2 1,003 87,784 80.5 1,956 90,857 82.9 1,867 Yes
2-person Carpool 9,050 9.4 380 9,538 8.7 779 8,880 8.1 875 No
3-or-more-person Carpool 1,575 1.6 160 2,339 2.1 345 1,350 1.2 328 No
Transit 2,144 2.2 187 2,618 2.4 515 1,327 1.2 395 Yes
Bike 30 0.0 22 58 0.1 54 106 0.1 90 No
Walked 1,960 2.0 179 1,814 1.7 445 1,495 1.4 395 Yes
Taxi, Motorcycle and Other means 410 0.4 82 421 0.4 178 642 0.6 250 No
Worked at Home 3,915 4.1 252 4,531 4.2 738 4,878 4.5 657 Yes

Notes:

* The coefficient of variation (CV) can be derived by the standard error (SE) divided by the estimate, while SE = MOE/1.645.
** The z-value of the difference of the two estimates are used to determined if the two estimates are significantly different at 90% confidence level.

1 Census 2000 Table 1-002, 2007-2009 ACS Table B08006 and 2010-2012 ACS B08006

Updated: 8/11/2017
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