Download an Excel file* of this document: profile_maryland__rockville_city.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? ** |
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|---|---|---|---|---|---|---|---|---|
| Value | MOE(+/-) | Value | MOE(+/-) | Value | Value | MOE(+/-) | ||
| Total Persons 1 | 47,257 | -- | 60,747 | 53 | 61,209 | 62,299 | 46 | -- |
| Persons in Households 2 | 45,604 | 206 | 59,813 | -- | 60,106 | 61,313 | -- | -- |
| Total Households 3 | 17,222 | 121 | 22,871 | 448 | 23,686 | 24,375 | 667 | Yes |
| Average Number of Persons per Household 4 | 2.65 | 0.05 | 2.62 | 0.05 | 2.54 | 2.52 | 0.07 | Yes |
| Average Household Income 5 | $82,210 | $2,585 | $118,546 | $5,513 | -- | $121,539 | $6,605 | Yes |
| Average Number of Vehicles per Household 6 | 1.71 | 0.05 | 1.68 | 0.06 | -- | 1.62 | 0.07 | Yes |
| Percent of Persons in Poverty 7 | 7.80 | 0.60 | 3.70 | 0.98 | -- | 5.80 | 1.30 | Yes |
| Percent Minority 8 | 32.10 | 1.10 | 33.20 | 1.87 | 39.60 | 35.60 | 2.29 | Yes |
| Percent of Persons 65 and Over 9 | 12.80 | 0.80 | 13.50 | 1.10 | 14.00 | 15.00 | 1.12 | Yes |
| Percent of Persons Foreign Born 10 | 31.00 | 1.10 | 35.60 | 1.76 | -- | 33.20 | 1.87 | Yes |
| Total Workers at Place of Residence11 | 24,247 | 560 | 35,373 | 1,454 | -- | 34,612 | 1,101 | 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 | 23,890 | 100.0 | 560 | 33,057 | 100.0 | 878 | 33,584 | 100.0 | 1,142 | Yes |
| Drove alone | 16,140 | 67.6 | 531 | 20,286 | 61.4 | 1,016 | 20,119 | 59.9 | 879 | Yes |
| 2-person Carpool | 2,085 | 8.7 | 230 | 2,470 | 7.5 | 461 | 2,229 | 6.6 | 477 | No |
| 3-or-more-person Carpool | 465 | 1.9 | 110 | 807 | 2.4 | 311 | 636 | 1.9 | 240 | No |
| Transit | 3,285 | 13.8 | 285 | 6,178 | 18.7 | 659 | 7,131 | 21.2 | 856 | Yes |
| Bike | 65 | 0.3 | 41 | 116 | 0.4 | 129 | 199 | 0.6 | 155 | No |
| Walked | 535 | 2.2 | 118 | 1,108 | 3.4 | 304 | 834 | 2.5 | 228 | Yes |
| Taxi, Motorcycle and Other means | 150 | 0.6 | 63 | 330 | 1.0 | 220 | 428 | 1.3 | 164 | Yes |
| Worked at Home | 1,175 | 4.9 | 174 | 1,762 | 5.3 | 359 | 2,008 | 6.0 | 380 | 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 | 60,565 | 100.0 | -- | 68,421 | 100.0 | 2,575 | 69,186 | 100.0 | 2,232 | -- |
| Drove alone | 48,010 | 79.3 | -- | 54,483 | 79.6 | 2,332 | 51,723 | 74.8 | 1,842 | -- |
| 2-person Carpool | 5,215 | 8.6 | 351 | 5,371 | 7.8 | 753 | 6,649 | 9.6 | 1,002 | Yes |
| 3-or-more-person Carpool | 1,480 | 2.4 | 195 | 1,234 | 1.8 | 330 | 1,080 | 1.6 | 293 | Yes |
| Transit | 3,650 | 6.0 | 299 | 4,152 | 6.1 | 745 | 5,864 | 8.5 | 820 | Yes |
| Bike | 85 | 0.1 | 47 | 148 | 0.2 | 133 | 214 | 0.3 | 155 | No |
| Walked | 605 | 1.0 | 126 | 839 | 1.2 | 267 | 1,110 | 1.6 | 301 | Yes |
| Taxi, Motorcycle and Other means | 350 | 0.6 | 96 | 432 | 0.6 | 198 | 538 | 0.8 | 251 | No |
| Worked at Home | 1,175 | 1.9 | 174 | 1,762 | 2.6 | 359 | 2,008 | 2.9 | 380 | 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) | 30.4 | 0.8 | 30.3 | 1.5 | 30.9 | 1.9 | No |
| Drove alone | 27.3 | 0.9 | 26.3 | 2.2 | 26.6 | 2.0 | No |
| Carpooled | 30.0 | 2.3 | 29.5 | 6.9 | 29.9 | 8.5 | No |
| Transit | 47.1 | 2.2 | 47.6 | 7.0 | 45.8 | 7.5 | No |
| Taxi, Motorcycle, Walk, Bicycle and Other means | 24.5 | 5.0 | 15.5 | 8.1 | 19.5 | 6.4 | 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
