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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 | 20,851,820 | -- | 24,308,102 | 0 | 25,145,561 | 25,644,550 | 0 | -- |
| Persons in Households 2 | 20,290,302 | 2,991 | 23,715,804 | -- | 24,564,422 | 25,059,915 | -- | -- |
| Total Households 3 | 7,397,294 | 3,360 | 8,396,026 | 11,914 | 8,922,933 | 8,852,441 | 11,475 | Yes |
| Average Number of Persons per Household 4 | 2.74 | 0.00 | 2.82 | 0.01 | 2.75 | 2.83 | 0.01 | Yes |
| Average Household Income 5 | $54,410 | $78 | $68,035 | $236 | -- | $70,533 | $282 | Yes |
| Average Number of Vehicles per Household 6 | 1.70 | 0.00 | 1.78 | 0.00 | -- | 1.79 | 0.00 | -- |
| Percent of Persons in Poverty 7 | 15.40 | 0.00 | 16.60 | 0.14 | -- | 18.10 | 0.14 | Yes |
| Percent Minority 8 | 29.00 | 0.00 | 27.40 | 0.13 | 29.60 | 25.50 | 0.10 | Yes |
| Percent of Persons 65 and Over 9 | 9.90 | 0.00 | 10.10 | 0.04 | 10.30 | 10.60 | 0.05 | Yes |
| Percent of Persons Foreign Born 10 | 13.90 | 0.00 | 16.00 | 0.08 | -- | 16.40 | 0.08 | Yes |
| Total Workers at Place of Residence11 | 9,340,963 | 9,188 | 11,512,187 | 21,604 | -- | 11,591,118 | 18,810 | 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 | 9,157,875 | 100.0 | 9,170 | 11,011,500 | 100.0 | 18,488 | 11,370,628 | 100.0 | 17,924 | Yes |
| Drove alone | 7,115,590 | 77.7 | 8,760 | 8,689,810 | 78.9 | 21,061 | 9,085,158 | 79.9 | 20,852 | Yes |
| 2-person Carpool | 982,995 | 10.7 | 3,916 | 982,633 | 8.9 | 11,661 | 952,880 | 8.4 | 11,879 | Yes |
| 3-or-more-person Carpool | 343,015 | 3.7 | 2,350 | 334,702 | 3.0 | 6,962 | 303,209 | 2.7 | 6,860 | Yes |
| Transit | 164,170 | 1.8 | 1,633 | 185,753 | 1.7 | 4,705 | 177,606 | 1.6 | 5,117 | Yes |
| Bike | 21,550 | 0.2 | 594 | 27,775 | 0.3 | 1,816 | 30,307 | 0.3 | 1,687 | Yes |
| Walked | 173,670 | 1.9 | 1,679 | 194,076 | 1.8 | 4,839 | 187,688 | 1.7 | 4,746 | Yes |
| Taxi, Motorcycle and Other means | 104,860 | 1.1 | 1,307 | 186,807 | 1.7 | 5,347 | 170,696 | 1.5 | 4,748 | Yes |
| Worked at Home | 252,025 | 2.8 | 2,019 | 409,944 | 3.7 | 6,804 | 463,084 | 4.1 | 7,713 | 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 | 9,156,730 | 100.0 | 9,169 | 10,996,698 | 100.0 | 18,954 | 11,360,321 | 100.0 | 18,912 | Yes |
| Drove alone | 7,119,580 | 77.8 | 8,761 | 8,688,268 | 79.0 | 20,835 | 9,084,932 | 80.0 | 21,345 | Yes |
| 2-person Carpool | 982,830 | 10.7 | 3,916 | 982,102 | 8.9 | 11,474 | 951,075 | 8.4 | 11,725 | Yes |
| 3-or-more-person Carpool | 341,685 | 3.7 | 2,346 | 331,568 | 3.0 | 6,596 | 301,302 | 2.7 | 6,857 | Yes |
| Transit | 163,130 | 1.8 | 1,628 | 185,056 | 1.7 | 4,708 | 177,071 | 1.6 | 5,194 | Yes |
| Bike | 21,410 | 0.2 | 592 | 27,762 | 0.3 | 1,829 | 30,253 | 0.3 | 1,601 | Yes |
| Walked | 173,265 | 1.9 | 1,677 | 190,681 | 1.7 | 4,999 | 186,062 | 1.6 | 4,779 | Yes |
| Taxi, Motorcycle and Other means | 102,800 | 1.1 | 1,294 | 181,317 | 1.6 | 5,617 | 166,542 | 1.5 | 4,721 | Yes |
| Worked at Home | 252,025 | 2.8 | 2,019 | 409,944 | 3.7 | 6,804 | 463,084 | 4.1 | 7,713 | 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) | 25.4 | 0.0 | 24.8 | 0.1 | 24.9 | 0.1 | Yes |
| Drove alone | 24.5 | 0.0 | 24.1 | 0.1 | 24.3 | 0.1 | Yes |
| Carpooled | 28.2 | 0.1 | 28.0 | 0.5 | 27.6 | 0.5 | Yes |
| Transit | 47.6 | 0.4 | 46.0 | 1.7 | 46.1 | 2.0 | No |
| Taxi, Motorcycle, Walk, Bicycle and Other means | 21.2 | 0.2 | 19.6 | 0.6 | 20.2 | 0.7 | 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 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
