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| Table 1. Selected Characteristics | Census 2000 | 2007-2009 ACS | 2010 Census | 2010-2012 ACS | Is the numeric change between Census 2000 and 2010-2012 ACS Significant? ** |
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|---|---|---|---|---|---|---|---|---|
| Value | MOE(+/-) | Value | MOE(+/-) | Value | Value | MOE(+/-) | ||
| Total Persons 1 | 9,938,444 | -- | 10,007,685 | 0 | 9,883,640 | 9,879,277 | 0 | -- |
| Persons in Households 2 | 9,688,463 | 1,997 | 9,748,733 | -- | 9,654,572 | 9,652,088 | -- | -- |
| Total Households 3 | 3,788,780 | 2,555 | 3,833,534 | 8,456 | 3,872,508 | 3,805,261 | 7,202 | Yes |
| Average Number of Persons per Household 4 | 2.56 | 0.00 | 2.54 | 0.01 | 2.49 | 2.54 | 0.01 | Yes |
| Average Household Income 5 | $57,400 | $106 | $62,642 | $289 | -- | $63,076 | $320 | Yes |
| Average Number of Vehicles per Household 6 | 1.76 | 0.00 | 1.78 | 0.01 | -- | 1.74 | 0.01 | Yes |
| Percent of Persons in Poverty 7 | 10.50 | 0.00 | 15.10 | 0.16 | -- | 17.30 | 0.22 | Yes |
| Percent Minority 8 | 19.90 | 0.10 | 20.30 | 0.06 | 21.10 | 20.70 | 0.05 | Yes |
| Percent of Persons 65 and Over 9 | 12.30 | 0.00 | 13.10 | 0.07 | 13.80 | 14.20 | 0.07 | Yes |
| Percent of Persons Foreign Born 10 | 5.30 | 0.00 | 6.00 | 0.10 | -- | 6.10 | 0.08 | Yes |
| Total Workers at Place of Residence11 | 4,641,471 | 6,364 | 4,502,883 | 11,675 | -- | 4,212,706 | 10,872 | Yes |
| Table 2a. Mode to Work 12 | CTPP2000 | 2007-2009 ACS | 2010-2012 ACS | Is the numeric change between CTPP 2000 and 2010-2012 ACS Significant? ** |
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|---|---|---|---|---|---|---|---|---|---|---|
| Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | ||
| Total Workers | 4,540,370 | 100.0 | 6,354 | 4,312,581 | 100.0 | 11,550 | 4,114,452 | 100.0 | 10,775 | Yes |
| Drove alone | 3,776,535 | 83.2 | 6,191 | 3,559,209 | 82.5 | 11,983 | 3,407,959 | 82.8 | 11,266 | Yes |
| 2-person Carpool | 358,475 | 7.9 | 2,378 | 317,422 | 7.4 | 5,550 | 290,759 | 7.1 | 4,992 | Yes |
| 3-or-more-person Carpool | 82,130 | 1.8 | 1,155 | 75,845 | 1.8 | 2,603 | 75,237 | 1.8 | 2,630 | Yes |
| Transit | 56,315 | 1.2 | 957 | 58,256 | 1.4 | 2,193 | 55,332 | 1.3 | 2,594 | No |
| Bike | 10,035 | 0.2 | 405 | 18,206 | 0.4 | 1,085 | 18,648 | 0.5 | 1,201 | Yes |
| Walked | 101,505 | 2.2 | 1,283 | 100,444 | 2.3 | 3,305 | 89,678 | 2.2 | 2,838 | Yes |
| Taxi, Motorcycle and Other means | 27,610 | 0.6 | 671 | 33,370 | 0.8 | 1,616 | 30,542 | 0.7 | 1,603 | Yes |
| Worked at Home | 127,765 | 2.8 | 1,437 | 149,829 | 3.5 | 3,153 | 146,297 | 3.6 | 3,734 | Yes |
| Table 2b. Mode to Work 12 | CTPP2000 | 2007-2009 ACS | 2010-2012 ACS | Is the numeric change between CTPP 2000 and 2010-2012 ACS Significant? ** |
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|---|---|---|---|---|---|---|---|---|---|---|
| Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | ||
| At Place of Work | ||||||||||
| Total Workers | 4,512,080 | 100.0 | 6,351 | 4,270,878 | 100.0 | 12,155 | 4,073,204 | 100.0 | 10,971 | Yes |
| Drove alone | 3,751,510 | 83.1 | 6,183 | 3,524,457 | 82.5 | 12,661 | 3,374,155 | 82.8 | 11,497 | Yes |
| 2-person Carpool | 355,675 | 7.9 | 2,369 | 313,720 | 7.3 | 5,536 | 286,905 | 7.0 | 5,008 | Yes |
| 3-or-more-person Carpool | 81,485 | 1.8 | 1,150 | 74,668 | 1.7 | 2,675 | 74,063 | 1.8 | 2,567 | Yes |
| Transit | 55,865 | 1.2 | 954 | 57,238 | 1.3 | 2,200 | 54,527 | 1.3 | 2,579 | No |
| Bike | 10,055 | 0.2 | 406 | 18,159 | 0.4 | 1,089 | 18,711 | 0.5 | 1,199 | Yes |
| Walked | 100,970 | 2.2 | 1,279 | 99,845 | 2.3 | 3,353 | 88,837 | 2.2 | 2,794 | Yes |
| Taxi, Motorcycle and Other means | 28,755 | 0.6 | 685 | 32,962 | 0.8 | 1,603 | 29,709 | 0.7 | 1,551 | No |
| Worked at Home | 127,765 | 2.8 | 1,437 | 149,829 | 3.5 | 3,153 | 146,297 | 3.6 | 3,734 | Yes |
| Table 3. Mean Travel Time by Mode to Work 13 | Census 2000 | 2007-2009 ACS | 2010-2012 ACS | Is the change in travel time between Census 2000 and 2010-2012 ACS Significant? ** |
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|---|---|---|---|---|---|---|---|
| Minutes | MOE(+/-) | Minutes | MOE(+/-) | Minutes | MOE(+/-) | ||
| At Place of Residence | |||||||
| Total Workers (does not include workers who worked at home) | 24.1 | 0.0 | 23.8 | 0.1 | 24.0 | 0.1 | Yes |
| Drove alone | 23.8 | 0.0 | 23.5 | 0.1 | 23.8 | 0.1 | No |
| Carpooled | 26.8 | 0.2 | 26.9 | 0.7 | 26.2 | 0.6 | No |
| Transit | 44.4 | 0.6 | 41.8 | 2.5 | 42.3 | 2.8 | No |
| Taxi, Motorcycle, Walk, Bicycle and Other means | 15.6 | 0.3 | 15.8 | 0.8 | 16.3 | 0.8 | No |
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 SF3 Table P1; 2007-2009 ACS Table B01003; 2010-2012 ACS Table B01003
2 Census 2000 SF3 Table P9; 2007-2009 ACS Table B09016; 2010-2012 ACS Table B01003 minus Table B26001
3 Census 2000 SF3 Table P10; 2007-2009 ACS Table B19001; 2010-2012 ACS Table B19001
4 Census 2000 SF3 Table P9 divided Census 2000 SF3 Table P10; 2007-2009 ACS Table B09016 divided 2007-2009 ACS Table B19001; 2010-2012 ACS Table S1101
5 CTPP2000 Table 1-090; 2007-2009 ACS Table B19025; 2010-2012 ACS Table B19025
6 Census 2000 SF3 Table H46; 2007-2009 ACS Table B25046; 2010-2012 ACS Table B25046
7 Census 2000 SF3 Table P87; 2007 -2009 ACS Table B17001; 2010-2012 ACS Table B17001
8 Census 2000 SF3 Table P6; 2007-2009 ACS Table B02001; 2010-2012 ACS Table B02001
9 Census 2000 SF3 Table P8; 2007-2009 ACS Table B01001; 2010-2012 ACS Table B01001
10 Census 2000 SF3 Table P21; 2007-2009 ACS Table B06003; 2010-2012 ACS Table B06003
11 Census 2000 SF3 Table P43; 2007-2009 ACS Table B23001; 2010-2012 ACS Table B23025
12 Residence place information is from CTPP2000 Table 1-002; 2007- 2009 ACS Table B08301; 2010-2012 ACS Table B08301. Workplace information is from CTPP2000 Table 2-002; 2007-2009 ACS Table B08406; 2010-2012 ACS Table B08601
13 CTPP2000 1-118; 2007-2009 ACS Table C08136; 2010-2012 ACS Table C08136
