Download an Excel file* of this document: profile_virginia__loudoun_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 | 169,599 | -- | 289,584 | -- | 312,311 | 326,222 | -- | -- |
| Persons in Households 2 | 168,743 | 140 | 288,764 | -- | 311,139 | 325,021 | -- | -- |
| Total Households 3 | 59,921 | 222 | 94,367 | 1,214 | 104,583 | 106,027 | 1,119 | Yes |
| Average Number of Persons per Household 4 | 2.82 | 0.02 | 3.06 | 0.04 | 2.98 | 3.07 | 0.03 | Yes |
| Average Household Income 5 | $94,815 | $1,257 | $133,680 | $3,289 | -- | $137,953 | $3,152 | Yes |
| Average Number of Vehicles per Household 6 | 2.03 | 0.02 | 2.06 | 0.04 | -- | 2.09 | 0.03 | Yes |
| Percent of Persons in Poverty 7 | 2.80 | 0.20 | 3.30 | 0.63 | -- | 3.80 | 0.60 | Yes |
| Percent Minority 8 | 17.50 | 0.40 | 26.90 | 0.53 | 31.30 | 31.10 | 0.64 | Yes |
| Percent of Persons 65 and Over 9 | 5.50 | 0.30 | 6.20 | 0.35 | 6.50 | 7.00 | 0.32 | Yes |
| Percent of Persons Foreign Born 10 | 11.30 | 0.40 | 20.30 | 0.77 | -- | 22.80 | 0.75 | Yes |
| Total Workers at Place of Residence11 | 93,760 | 979 | 161,402 | 2,096 | -- | 174,280 | 2,081 | 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 | 92,315 | 100.0 | 981 | 152,828 | 100.0 | 1,765 | 171,069 | 100.0 | 1,971 | Yes |
| Drove alone | 75,325 | 81.6 | 978 | 120,975 | 79.2 | 2,227 | 134,218 | 78.5 | 2,611 | Yes |
| 2-person Carpool | 7,205 | 7.8 | 397 | 11,590 | 7.6 | 1,095 | 11,213 | 6.6 | 1,229 | Yes |
| 3-or-more-person Carpool | 1,830 | 2.0 | 203 | 3,338 | 2.2 | 820 | 3,149 | 1.8 | 720 | Yes |
| Transit | 1,230 | 1.3 | 167 | 3,475 | 2.3 | 548 | 5,040 | 2.9 | 688 | Yes |
| Bike | 110 | 0.1 | 50 | 461 | 0.3 | 258 | 256 | 0.1 | 180 | No |
| Walked | 1,130 | 1.2 | 160 | 2,215 | 1.4 | 483 | 2,743 | 1.6 | 589 | Yes |
| Taxi, Motorcycle and Other means | 760 | 0.8 | 132 | 1,095 | 0.7 | 265 | 1,381 | 0.8 | 448 | Yes |
| Worked at Home | 4,725 | 5.1 | 324 | 9,679 | 6.3 | 894 | 13,069 | 7.6 | 1,132 | 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 | 79,240 | 100.0 | 983 | 129,378 | 100.0 | 3,180 | 143,436 | 100.0 | 4,106 | Yes |
| Drove alone | 62,255 | 78.6 | 949 | 98,767 | 76.3 | 2,828 | 109,755 | 76.5 | 3,835 | Yes |
| 2-person Carpool | 7,110 | 9.0 | 395 | 11,135 | 8.6 | 1,229 | 10,491 | 7.3 | 1,280 | Yes |
| 3-or-more-person Carpool | 2,575 | 3.2 | 241 | 4,000 | 3.1 | 759 | 3,259 | 2.3 | 573 | Yes |
| Transit | 490 | 0.6 | 106 | 1,782 | 1.4 | 525 | 1,878 | 1.3 | 520 | Yes |
| Bike | 120 | 0.2 | 52 | 480 | 0.4 | 263 | 205 | 0.1 | 176 | No |
| Walked | 1,185 | 1.5 | 164 | 2,070 | 1.6 | 472 | 2,805 | 2.0 | 560 | Yes |
| Taxi, Motorcycle and Other means | 785 | 1.0 | 134 | 1,465 | 1.1 | 468 | 1,974 | 1.4 | 444 | Yes |
| Worked at Home | 4,725 | 6.0 | 324 | 9,679 | 7.5 | 894 | 13,069 | 9.1 | 1,132 | 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) | 30.8 | 0.4 | 33.1 | 0.8 | 33.2 | 1.0 | Yes |
| Drove alone | 29.8 | 0.4 | 31.9 | 1.0 | 32.1 | 1.0 | Yes |
| Carpooled | 34.2 | 1.4 | 32.9 | 5.3 | 37.2 | 5.8 | No |
| Transit | 75.4 | 4.5 | 74.0 | 16.1 | 63.0 | 11.8 | No |
| Taxi, Motorcycle, Walk, Bicycle and Other means | 27.1 | 4.0 | 35.2 | 10.5 | 22.6 | 7.5 | 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
