Download an Excel file* of this document: profile_massachusetts__middlesex_county.xls.
| 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? ** |
|||
|---|---|---|---|---|---|---|---|---|
| Value | MOE(+/-) | Value | MOE(+/-) | Value | Value | MOE(+/-) | ||
| Total Persons 1 | 1,465,396 | -- | 1,489,387 | -- | 1,503,085 | 1,521,993 | -- | -- |
| Persons in Households 2 | 1,412,414 | 1,081 | 1,434,813 | -- | 1,447,673 | 1,464,230 | -- | -- |
| Total Households 3 | 561,506 | 581 | 563,743 | 2,893 | 580,688 | 580,358 | 2,125 | Yes |
| Average Number of Persons per Household 4 | 2.52 | 0.01 | 2.55 | 0.01 | 2.49 | 2.52 | 0.01 | No |
| Average Household Income 5 | $80,295 | $436 | $102,403 | $1,402 | -- | $106,571 | $1,126 | Yes |
| Average Number of Vehicles per Household 6 | 1.61 | 0.01 | 1.64 | 0.01 | -- | 1.62 | 0.01 | No |
| Percent of Persons in Poverty 7 | 6.50 | 0.10 | 7.40 | 0.35 | -- | 8.10 | 0.30 | Yes |
| Percent Minority 8 | 14.20 | 0.10 | 17.40 | 0.25 | 20.00 | 19.70 | 0.20 | Yes |
| Percent of Persons 65 and Over 9 | 12.80 | 0.10 | 12.80 | 0.20 | 13.10 | 13.30 | 0.20 | Yes |
| Percent of Persons Foreign Born 10 | 15.20 | 0.10 | 17.70 | 0.34 | -- | 19.40 | 0.32 | Yes |
| Total Workers at Place of Residence11 | 778,002 | 2,889 | 806,299 | 4,974 | -- | 804,767 | 4,620 | 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? ** |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | ||
| Total Workers | 763,635 | 100.0 | 2,892 | 776,278 | 100.0 | 4,895 | 788,026 | 100.0 | 4,752 | Yes |
| Drove alone | 550,450 | 72.1 | 2,803 | 540,804 | 69.7 | 4,543 | 549,861 | 69.8 | 4,971 | No |
| 2-person Carpool | 52,490 | 6.9 | 1,076 | 50,705 | 6.5 | 2,093 | 52,342 | 6.6 | 2,694 | No |
| 3-or-more-person Carpool | 9,950 | 1.3 | 475 | 12,239 | 1.6 | 1,193 | 11,010 | 1.4 | 1,252 | No |
| Transit | 77,385 | 10.1 | 1,295 | 83,160 | 10.7 | 2,812 | 82,699 | 10.5 | 2,673 | Yes |
| Bike | 5,165 | 0.7 | 343 | 10,193 | 1.3 | 1,229 | 9,864 | 1.3 | 932 | Yes |
| Walked | 34,975 | 4.6 | 884 | 36,124 | 4.7 | 1,850 | 38,047 | 4.8 | 1,866 | Yes |
| Taxi, Motorcycle and Other means | 5,485 | 0.7 | 353 | 6,438 | 0.8 | 790 | 6,967 | 0.9 | 827 | Yes |
| Worked at Home | 27,725 | 3.6 | 789 | 36,615 | 4.7 | 1,853 | 37,236 | 4.7 | 1,385 | 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? ** |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | Number | Percent | MOE(+/-)* | ||
| At Place of Work | ||||||||||
| Total Workers | 829,255 | 100.0 | 2,869 | 851,522 | 100.0 | 7,444 | 853,848 | 100.0 | 6,630 | Yes |
| Drove alone | 637,240 | 76.8 | 2,870 | 637,165 | 74.8 | 6,655 | 639,487 | 74.9 | 5,781 | No |
| 2-person Carpool | 58,735 | 7.1 | 1,135 | 57,288 | 6.7 | 2,339 | 56,207 | 6.6 | 2,591 | No |
| 3-or-more-person Carpool | 11,745 | 1.4 | 516 | 14,675 | 1.7 | 1,539 | 12,425 | 1.5 | 1,137 | No |
| Transit | 47,035 | 5.7 | 1,020 | 53,867 | 6.3 | 2,569 | 52,409 | 6.1 | 2,536 | Yes |
| Bike | 4,675 | 0.6 | 326 | 8,690 | 1.0 | 1,196 | 8,603 | 1.0 | 832 | Yes |
| Walked | 36,260 | 4.4 | 899 | 36,563 | 4.3 | 1,900 | 40,401 | 4.7 | 1,843 | Yes |
| Taxi, Motorcycle and Other means | 5,850 | 0.7 | 365 | 6,659 | 0.8 | 813 | 7,080 | 0.8 | 888 | Yes |
| Worked at Home | 27,725 | 3.3 | 789 | 36,615 | 4.3 | 1,853 | 37,236 | 4.4 | 1,385 | 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? ** |
|||
|---|---|---|---|---|---|---|---|
| Minutes | MOE(+/-) | Minutes | MOE(+/-) | Minutes | MOE(+/-) | ||
| At Place of Residence | |||||||
| Total Workers (does not include workers who worked at home) | 27.4 | 0.1 | 27.7 | 0.3 | 28.5 | 0.3 | Yes |
| Drove alone | 26.0 | 0.1 | 26.4 | 0.4 | 27.3 | 0.4 | Yes |
| Carpooled | 27.2 | 0.4 | 27.0 | 1.6 | 28.1 | 2.1 | No |
| Transit | 43.3 | 0.5 | 43.9 | 2.1 | 43.8 | 2.0 | No |
| Taxi, Motorcycle, Walk, Bicycle and Other means | 17.5 | 0.5 | 16.6 | 1.3 | 17.6 | 1.3 | 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
